My 04 Jetta was running hotter than normal. I had already changed the reservoir and cap. I then changed both the thermostat and ects ( engine coolant temperature sensor). Well everything is perfect again. I don't know which part was the problem, but since I had to drain the system I thought I just change both parts . Thermostat was$9 ,sensor was$17
yes I also have a 2004 Jetta 1.8T engine the reservoir cracked at the top and I just ordered another one not only did that go to coolant control temperature when also I replaced that but now it doesn't seem to be working I guess the whole problem is the coolant reservoir bottle
But you don't address the cap as how do know when it goes bad the most prevalent thing that goes bad, I'm sick of all these incomplete so- called car expert genuis leaving out the most important issue when the things about the bottle is visually 👀
I need to stop watching your videos. Everytime I see one I think I need replace something. So far I'm replacing the valve cover, vacuum pump, and map sensor. Luckily haven't seen any sign of this failing.
Hi, might be worthwhile updating this video. Many newer vw/audi/skoda/seat, have a marking on the bottle ' Mit Silicat', german for with silica. This means it contains a small pouch of silica, in the bottle. these pouches have been known to fail, and clog up the cooling system, especially badly affected is the heater matrix. To avoid this, I removed the pouch, flushed the system and filled it with the correct mix of vw evo 12 coolant, to ensure the coolant retains the correct anti corrosive propertie.Keep the videos coming, I find them really helpful!
Hey Charles I know this is kind of an old video , My coolant bottle has changed color to a dark brownish kind of orange color I'm not getting any lights on the dash but do you know if I would have to replace it?
very cool, I'm pretty sure I have this exact problem on my 2006 Jetta TDI, the low coolant light comes on when the engine is cold, but if I turn the car off and back on again after it warms up slightly, the light doesnt come on, and the coolant reservoir is full
Just thought I'd mention this, as I had an issue with coolant level sensor on a Skoda (same as VW & Audi). The 2 prongs in the bottle dont relay resistance the cluster module calculates capacitance. This type of sensor is called a capacitive sensor.Similar arrangement also used in the sump pan to detect oil level, but the capacitance calculator is built into the oil sensor.
Hey Charles. I have a 2004 vw touran 1.9tdi 102hp. After a new head gasket, water pump, timing belt and a lot of other small stuff, I have a problem with my coolant. After 15min of highway driving I get a low coolant warning. And when I check the coolant tank is empty. Unscrew the lid and all of the coolant comes back. What do I do?
a4 b5 1.9tdi afn. nothing leaks, does not over heat how ever when parked throws half or more bottle out via overflow? this happens while parked and not running. Bottle, cap swapped to new parts and are holding pressure as expected. No contaminants in coolant, no bubbles. Any ideas what the frick is going on with it?
So I had my ac on high blast in my vw golf 2013 and it was a really hot day. After about 15 minutes, the coolant light came on, and the engine temp started going up. When I looked at it I found spilled coolant on my headlight, and around the coolant bottle, along with some spilled below it. There was also a puddle right below it on the ground. Was this just the coolant bottle spilling coolant from the pressure? Or is it something worse like a pipe or a plastic flange? Thanks!
Please help i hv water coming out tru a reservoir breather on my vw polo while am drivin bt the car does not overheat ,fan turns on fine at 90 degres i changed the reservoir cap bt nothing changes what could be the cause
Hello my VW Touran 2004 2.0 fsi petrol is not overheating but the low coolant light comes on after about an hour of driving the car and when I go check the bottle the coolant is gone but if I gently release the coolant cap the water will then come back but last a little while till it does the same thing again, I have recently changed the thermostat housing as I thought it might be that but I am still getting the same problem there is no oil in the water and no water in the oil. I have tried running the car without the cap idling for about 45mins and it gets to temperature and then starts overflowing the coolant, but doesn't seem to calm down as it would if it was air locked, do you have any advice please....? just to confirm the car never overheats and stays at normal temperature
That thing with the wires being covered with coolant. I would assume that changing the coolant on time could help prevent that? It does turn acidic with age. Please don't think of it as just water. It is more like highly toxic water that is a mix of different chemicals. Also I imagine that some water pumps could be saved if it is changed on time since the coolant also lubricates better than water does on its own.
This is driving me crazy 😤 idk If my reservoir is bad or the pipes are bad everything is soaked with coolant and the leak is so bad I fill it up 3 times a day
I have a tiguan 2.0 tdi 2012.. its leaking ...a add coolent every 8 days.. i changed water pump but nothing still leaking... im going crazy...sorry for my english...
@@clint1285 did u find the solution of the problem... for me i changed egr cooler ...and its consume less coolant... i think i have a problem of head gasket 😱😱...not less than 2000 💶....
Thanks My friend. My 2013 Tiguan had this happen today omw home today. Watched the temp like a hawk when I pulled over. Temp read like it always does. Letting the motor get cold. Now I know what to look for. Thank you much!
Why is my coolant evaporating on my VW CC a day before I had filled the coolant level where it’s supposed to be I took a hour drive and my coolant light came on I had opened the coolant reservoir and my coolant seemed it was being flushed away like gulping away like when you take a drink out a water bottle, and my coolant levels where dropping , does anyone know what could be the issue??
I have a problem with skoda 184bhp 2.0tdi. Its loosing coolant, mostly during dpf regens or hard driving. I have checked oil level, oil cap and everything seems ok, car performs flawlessly and i just cant find where the coolant is going. I can go a while without loosing any coolant and then at some point the level drops.. Had to top it up a few times... Any idea?
Hi watching this video in 2024 from South africa I'm working on a golf7 gti the temperature goes up to 130 when pressing down on the gas and a warning saying coolant level sensor range performance
hahah u rock dude i been workin through this problem for the last week ... I even parked the vehicle thinking it might over heat and was getting ready to go buy a new thermostat , heat sensor and water pump just to say hey these are all new ........ and i should probably do that anway but thats another day so the first time i checked the level in the coolant bottle the car was running and it looked fine ........i just went out and checked it while it was cold and not running and wa la sure enough it was low so i filled it and started it up and bingo no more red light ........ sometimes its the little things in life that make you feel so stupid lol but thanks for the video you saved me money for the time being yet i will replace all the cooling components soon ......... u saved me time and money for now and released some of my stress hahaha
Hi. I watch all of your videos. I don't know if you answer questions, but I have a question about my 2004 2.0litre Jetta. It just started to run a little hotter than normal. The temperature always ran with the gauge straight up in the middle. Now its more like 1 o'clock. I changed the reservoir and cap because there was small leakage around the return line. I also bought a thermostat and a coolant temperature sensor. What does the sensor do? Does it control hi and low fan speed?. I'm not sure how the cooling system works. Thanks
2005 jetta wagon tdi coolant return nipple broke off inside the hose at 265K miles. Loosen cap and close off return hose to get to destination then replace coolant reservior. Full flush and replace coolant.
i noticed some debris in the tank. i need to empty it and take it out to see what it is. but i wonder which parts can come into this tank? i guess i can see when i removed it. are there known cases?
I start to think that every piece in these shitty cars fail ...I just wish i knew before buying a broken passat because it was " cheaper" , just by trying to fix it i'm over the price of an working one ......
I have a 2003 beetle 2.0 and I replaced the coolant bottle and ECT with after market parts and they don't seem to be functioning correctly is this because they are cheap after market parts or a deeper issue?
My 07 golf bkd has a leak cant find it replaced the expansion tank still the same probably topping up the bottle once a week as its below low and throws the coolant light on anyone have any tips ?
In my conclusion, VW is a piece of shit for a car. I have had more issues with my VW than my honda and scion put together and I only had my VW for a little over a year.
A bad coolant bottles or the sensor in it can cause the fan always running on high speed ? I Have a new beetle 2008 i replace the ect nd the fan and it still running on high speed please help
best video yet on this subject. I have 2001 Jetta. Have flushed and filled with VW coolant. Always the one sensor rod closest to firewall corrodes. have replaced 2 times. No coolant migration. Even after flush/fill, coolant gets brownish. Could this be oil and could it be due to a bad oil cooler or seal? Thanks
This would be a great video to launch off into VW coolant system woes. I had a coolant light and a p2181 error on my daughter's 2003 Beetle. I replaced the reservoir and still had the coolant error.😬 it ended up that the thermostat was stuck open and the engine wasn't getting up to optimum operating temperature. The water pump wasn't suspect because we had already replaced that due to a broken plastic impeller and previous coolant error. All said and done, we still love our driveway full of VW cars!
My 17 year old bought a 2003 Volkswagen beetle. We discovered tonight that this tank has a white foamy looking substance in it , and it STINKS. There is no water in the oil from what we can tell. Has anyone else had this issue ? Thanks in advance
If you have time, I have a question. If I'm using one of these expansion tanks in a project, do you know of any way to use the coolant level monitor prongs to set off a custom light? As in, I have the expansion tank, I have an LED. How do I get it to turn on when the coolant is not touching both prongs? Apparently the prongs are usually connected to something which monitors resistance, and when the resistance gets too high, the light turns on. Creating a simple circuit to do that seems complex. Typically the job of a micro controller. Would be much easier if they connected when coolant dropped like float sensors work. I was thinking, I could just use a normally on relay and use the two level sensor contacts as the switch lines for the relay. As long as there is coolant, the relay is switched to off, meaning no light. Coolant drops too low, resistance becomes infinite, relay returns to normal on state, light goes on. My only concern is I will be passing current directly through coolant. Obviously a very small amount, typically in the 200mA or less range. Just not sure if that can have unintended consequences in terms of electrolysis. As long as neither contact is touching coolant, it shouldn't pass current through the whole cooling system. I realize there is a low chance you'll see this comment. Maybe I'll hit you up on social media sometime. Just figured it would pique your interest if you do see it. Forums were not helpful and I figured if anyone knew, it would be you. Thanks for the awesome videos!
I think part of the solution may be putting the relay in the power side of the level sensor wiring. Provided both sensor pins aren't touching coolant, resistance should be so high that the relay does not switch and therefore it should pass nearly zero current through the coolant. As an additional precaution, I could use a MOSFET instead of a relay. It should draw such low Amperage that current through coolant is a non issue, especially since the reservoir and connecting hoses are plastic. Since a MOSFET is Voltage switched, provided there is high resistance, it definitely shouldn't switch without coolant present. I'd need to make sure the resistance through coolant wasn't so high it would never switch though. At any rate, if you have more insight, please let me know!
I have a 1992 VW Cabriolet. The sensor probe that drops down into the reservoir won't stay secure in the bottle. The coolant then comes out of the reservoir when driving, tripping the flashing red light, Anyone else see an issue like this?
I Have 215,000+ miles on my 2004 Jetta TDI, got the coolant light and ended up being a leak at the small hose. Speaking from experience...TAKE YOUR TIME CHANGING THIS RESERVOIR- The parts of the reservoir that connect hoses/connector were VERY brittle. The old reservoir doesn't matter but the job is way harder and longer if they break on the inside of hose or even the connector clamp. Cheers and good luck!
Hello there!!! I'm having some isses in my b6 2010 passat TSI. At cold mornings (10°c here in Brazil) when i start the car, temperature light start blinking. The cooling liquid is in propper level and the car temperature goes up till 90ºc and stay there. If i turn the car off and start again the light stop blinking..... is it possible to be this bottle issue? Thanks, and sorry my poor english.
Working on a 2005 Jetta GLS with a 2.0 and replacing the coolant bottle after it started breaking down and leaving chunks in the reservoir. Found it while doing a flush with water.
PLEASE HELP! I just pulled 2 floating “filters” out of my coolant bottle from vw scirocco.. was wondering if I needed them in there? Or they’re pointless.. they seem to be making it corroded
At what resistance of the coolant would the temp light start flashing? Is it temp related/calculated? Only the pink OEM coolant has the right resistance? What if RO water is added to the cooling system?
I had a couple Volksagens that used a round one just like that. There must be minor differences like the cap and bolt hole locations. Over the years the cap is one change that is easy to see since the color and style changes but they all look interchangeable otherwise but probably are not.
Hi man! Learned a lot on this video! Unfortunately I have a problem with my cooling system and can't find an answer anywhere.. Everything in the cooling system of my VW T3 works perfect, except one thing. When my coolant level is low in the round bottle that you're holding, normally it pumps water from the other reservoir (the one that's easy to fill up without opening your engine/hood) but it stopped doing it.. Is it the blue cap that's failing?? Really can't find anything on the internet. Thanks a lot!!
2015 passt 1.8 t. Cost to repair instrument cluster and coolant reservoir from dealer?? Problem- car starts but does not idle. Cause- coolant migration through cluster?? Thanks.
I had the plastic crack around the coolant return, replaced the bottle, and now I'm losing coolant at a furious rate, but don't know from where. It seems to be collecting on the rim around the middle rim of the bottle, but have never managed to catch it actually coming out of anywhere. It's gotta be the cap or the overflow tube, or the sensor port.. but that narrows it down not at all. I tried a new cap and it doesn't *feel* like it is as snug as the original one, and leaking just as bad (if not worse). It's like the tolerances of the new bottle opening just don't match the old or new cap.
I'm using a Skoda Octavia and I saw smoke coming through the air conditioner vents... the coolant tank was empty... i refilled and it happened again after few kilometers... no leakage under the car. I will check the cap
Thanks for all the videos! I have a 2008 mkv GTI, fsi engine. I just developed a bad coolant leak a couple of days ago and it seems to be coming from the lower front area of the engine. Where should I start looking?
VW service wanted to charge $199 to replace the coolant reservoir…. Idiots! This part costs $25 and it takes 15 minutes to replace. I’m following you for more videos! Thanks.
02 vw gti vr6 with over 400k and still going. 09 gti as well. Not to mention the rest of the fleet from big rig to diesel 3500 and 2500 and f250 and motorcycle. Out all them vw is the biggest pain between the secondary air injection tube coolant globe the climate controls and radio ignition switch harness cooling fans
you forgot to mention that inside those bottles there is a bag of silica crystals..designed to extend the life of the coolant.. which it does not do,, for anyone reading this.. get that bag out of the bottle now,, it eventually breaks,, and the crystals will clog your heater core...open the bottle you will see it on the right side ,,,
Lol I just replaced one on a MK7 Jetta with 7k miles. 🥴 the newer ones tend to see the cap fail. The cap doesn't vent apparently, and the system over pressurized causing the cap to press upwards and gum up the threads. Then you can't remove the cap without destroying the bottle threads 🤷♂️
I seem to have a failure around the equator of it. If I top up, it leaks out when the car is cool and there is low pressure. I presume that's s venting system failure.
Hi. My son has a 2014 Passat and use`s coolent.Theres no white slime in the oil cap,no pressure an oil resudue in the coolant tank.When the weather was cold white smoke came out of the exhaust. Now in the summer theres no smoke. Do i have to change the headgasket?
Hello. It has a Skoda Superb 2.0 TDI, 2009. 125 kw engine, cbbb code, this morning I saw that my engine oil had black flowed into the antifreeze tank. What can be? I have so much oil in coolant, Greetings from Europe. Of Montenegro. Cool the best channel I watch every video. Thank you.
My 04 Jetta was running hotter than normal. I had already changed the reservoir and cap. I then changed both the thermostat and ects ( engine coolant temperature sensor). Well everything is perfect again. I don't know which part was the problem, but since I had to drain the system I thought I just change both parts . Thermostat was$9 ,sensor was$17
yes I also have a 2004 Jetta 1.8T engine the reservoir cracked at the top and I just ordered another one not only did that go to coolant control temperature when also I replaced that but now it doesn't seem to be working I guess the whole problem is the coolant reservoir bottle
But you don't address the cap as how do know when it goes bad the most prevalent thing that goes bad, I'm sick of all these incomplete so- called car expert genuis leaving out the most important issue when the things about the bottle is visually 👀
I had the whole bottle replaced last month. Warning light went away. Two weeks later it’s back on . Sick of this beetle honestly
I need to stop watching your videos. Everytime I see one I think I need replace something. So far I'm replacing the valve cover, vacuum pump, and map sensor. Luckily haven't seen any sign of this failing.
Lol don’t stop!
My coolant bottle just broke and I knew I could count on the humble mechanic for the right info. Thanks
all old mk3's have the bottle so fuzzy you can't really tell how much coolant is in there.
Hi, might be worthwhile updating this video. Many newer vw/audi/skoda/seat, have a marking on the bottle ' Mit Silicat', german for with silica. This means it contains a small pouch of silica, in the bottle. these pouches have been known to fail, and clog up the cooling system, especially badly affected is the heater matrix. To avoid this, I removed the pouch, flushed the system and filled it with the correct mix of vw evo 12 coolant, to ensure the coolant retains the correct anti corrosive propertie.Keep the videos coming, I find them really helpful!
Hey Charles I know this is kind of an old video , My coolant bottle has changed color to a dark brownish kind of orange color I'm not getting any lights on the dash but do you know if I would have to replace it?
Did you solve this? My car has the same thing
It’s fine but the discoloration means the plastic is being Eatin into id replace it if you are worried about it
Replaced one today that was so corroded it didn't even register continuity
very cool, I'm pretty sure I have this exact problem on my 2006 Jetta TDI, the low coolant light comes on when the engine is cold, but if I turn the car off and back on again after it warms up slightly, the light doesnt come on, and the coolant reservoir is full
Same here - did cleaning the electrodes fix it? (OK - 6 years ago but hopeful : )
You keep saving me money!! Very straight forward. Thanks!
Just thought I'd mention this, as I had an issue with coolant level sensor on a Skoda (same as VW & Audi). The 2 prongs in the bottle dont relay resistance the cluster module calculates capacitance. This type of sensor is called a capacitive sensor.Similar arrangement also used in the sump pan to detect oil level, but the capacitance calculator is built into the oil sensor.
Correctly said...
Hey Charles.
I have a 2004 vw touran 1.9tdi 102hp. After a new head gasket, water pump, timing belt and a lot of other small stuff, I have a problem with my coolant. After 15min of highway driving I get a low coolant warning. And when I check the coolant tank is empty. Unscrew the lid and all of the coolant comes back. What do I do?
Having the same problem with my 04 Volkswagen caddy
a4 b5 1.9tdi afn. nothing leaks, does not over heat how ever when parked throws half or more bottle out via overflow? this happens while parked and not running. Bottle, cap swapped to new parts and are holding pressure as expected. No contaminants in coolant, no bubbles. Any ideas what the frick is going on with it?
I have the same problem on my 2015 Passat Tdi haven’t figured it out
In 4y i replaced two times the coolant bottle. Very bad quality.
So I had my ac on high blast in my vw golf 2013 and it was a really hot day. After about 15 minutes, the coolant light came on, and the engine temp started going up. When I looked at it I found spilled coolant on my headlight, and around the coolant bottle, along with some spilled below it. There was also a puddle right below it on the ground. Was this just the coolant bottle spilling coolant from the pressure? Or is it something worse like a pipe or a plastic flange? Thanks!
Max Vorobey same question did you ever figure it what it was?
Please help i hv water coming out tru a reservoir breather on my vw polo while am drivin bt the car does not overheat ,fan turns on fine at 90 degres i changed the reservoir cap bt nothing changes what could be the cause
Hello my VW Touran 2004 2.0 fsi petrol is not overheating but the low coolant light comes on after about an hour of driving the car and when I go check the bottle the coolant is gone but if I gently release the coolant cap the water will then come back but last a little while till it does the same thing again, I have recently changed the thermostat housing as I thought it might be that but I am still getting the same problem there is no oil in the water and no water in the oil. I have tried running the car without the cap idling for about 45mins and it gets to temperature and then starts overflowing the coolant, but doesn't seem to calm down as it would if it was air locked, do you have any advice please....? just to confirm the car never overheats and stays at normal temperature
That thing with the wires being covered with coolant. I would assume that changing the coolant on time could help prevent that? It does turn acidic with age. Please don't think of it as just water. It is more like highly toxic water that is a mix of different chemicals. Also I imagine that some water pumps could be saved if it is changed on time since the coolant also lubricates better than water does on its own.
This is driving me crazy 😤 idk If my reservoir is bad or the pipes are bad everything is soaked with coolant and the leak is so bad I fill it up 3 times a day
Me too.....sick of this leak....
I have a tiguan 2.0 tdi 2012.. its leaking ...a add coolent every 8 days.. i changed water pump but nothing still leaking... im going crazy...sorry for my english...
Same on my 2014 tiguan tsi!!
@@clint1285 did u find the solution of the problem... for me i changed egr cooler ...and its consume less coolant... i think i have a problem of head gasket 😱😱...not less than 2000 💶....
@@cherifchahid6726 yeah. I changed to metal water pump. No more leaking. Car burns oil fast. It has 130,000 miles. How many miles u got?
@@clint1285 141000km...
Thanks My friend. My 2013 Tiguan had this happen today omw home today. Watched the temp like a hawk when I pulled over. Temp read like it always does. Letting the motor get cold. Now I know what to look for. Thank you much!
Why is my coolant evaporating on my VW CC a day before I had filled the coolant level where it’s supposed to be I took a hour drive and my coolant light came on I had opened the coolant reservoir and my coolant seemed it was being flushed away like gulping away like when you take a drink out a water bottle, and my coolant levels where dropping , does anyone know what could be the issue??
I have a problem with skoda 184bhp 2.0tdi. Its loosing coolant, mostly during dpf regens or hard driving. I have checked oil level, oil cap and everything seems ok, car performs flawlessly and i just cant find where the coolant is going. I can go a while without loosing any coolant and then at some point the level drops.. Had to top it up a few times... Any idea?
Hi watching this video in 2024 from South africa I'm working on a golf7 gti the temperature goes up to 130 when pressing down on the gas and a warning saying coolant level sensor range performance
Please assist
my mk1 TT coolant bottle exploded and wrecked my bonnet!
Great video! Thank you. Very helpful. I will be using Deutsche Auto Parts in Future. They have a store less than a hour from me.
Oh nice. I’m on the other side of NC
hahah u rock dude i been workin through this problem for the last week ... I even parked the vehicle thinking it might over heat and was getting ready to go buy a new thermostat , heat sensor and water pump just to say hey these are all new ........ and i should probably do that anway but thats another day so the first time i checked the level in the coolant bottle the car was running and it looked fine ........i just went out and checked it while it was cold and not running and wa la sure enough it was low so i filled it and started it up and bingo no more red light ........ sometimes its the little things in life that make you feel so stupid lol but thanks for the video you saved me money for the time being yet i will replace all the cooling components soon ......... u saved me time and money for now and released some of my stress hahaha
Hi. I watch all of your videos. I don't know if you answer questions, but I have a question about my 2004 2.0litre Jetta. It just started to run a little hotter than normal. The temperature always ran with the gauge straight up in the middle. Now its more like 1 o'clock. I changed the reservoir and cap because there was small leakage around the return line. I also bought a thermostat and a coolant temperature sensor. What does the sensor do? Does it control hi and low fan speed?. I'm not sure how the cooling system works. Thanks
Yes. Mines keep leaping out.. I fill it then it is gone 2 days later... and my overheat light keeps flashing when it's hot
Thanks for this really 'COOL' video Henry,as ever great content man, keep on posting these 'COOL' uploads 🙂
my coolant tank got cracked after 5 yrs and 70k
2005 jetta wagon tdi coolant return nipple broke off inside the hose at 265K miles. Loosen cap and close off return hose to get to destination then replace coolant reservior. Full flush and replace coolant.
My temp light came on and the liquid inside my coolant bottle was boiling like water on a stove, any ideas what could be causing that issue?
I have a Gti 2.0l turbo and have a problem with coolant circulating, what do you think I can check?
Did u ever figure it out?
i noticed some debris in the tank. i need to empty it and take it out to see what it is. but i wonder which parts can come into this tank? i guess i can see when i removed it. are there known cases?
Surprised you didn’t mention more about the caps failing. I’ve had 2 VR6 Corrado’s both with overheating problems caused by faulty caps.
I have seen 1 cap fail in almost 15 years. It's possible for sure, but not super common from what I have seen
HumbleMechanic it’s possible it was just a problem for the European market. Either that or I’m just unlucky!
my coolant cap shot off leaving the threads still threaded what would cause that much pressure to make it explode like that
On to my 3nd cap. And 2nd bottle!
Agreed... it is a faulty seal in the caps
I start to think that every piece in these shitty cars fail ...I just wish i knew before buying a broken passat because it was " cheaper" , just by trying to fix it i'm over the price of an working one ......
I have a 2003 beetle 2.0 and I replaced the coolant bottle and ECT with after market parts and they don't seem to be functioning correctly is this because they are cheap after market parts or a deeper issue?
I’ve had a similar issue with a Touareg. Replacement coolant reservoir tanks kept exploding.
I’m replacing mine today. Very excited
My 07 golf bkd has a leak cant find it replaced the expansion tank still the same probably topping up the bottle once a week as its below low and throws the coolant light on anyone have any tips ?
Thank you very much HumbleMechanic. Very clear explanation, very informative.
In my conclusion, VW is a piece of shit for a car. I have had more issues with my VW than my honda and scion put together and I only had my VW for a little over a year.
MK4 I have boils and the coolant antifreeze presure and wanna come out. What do you think it's the problem?
A bad coolant bottles or the sensor in it can cause the fan always running on high speed ? I Have a new beetle 2008 i replace the ect nd the fan and it still running on high speed please help
So does the coolant evaporate, or does the low level indicate a leak, or worse, coolant getting into the engine?
Doesn’t evaporate, closed system. So if coolant level drops you have a leak, and hopefully it leaks externally otherwise you are in trouble.
Hy i have a problem with my golf 7 temperature water ... let me know if i can explain you the problem maybe you can help me
best video yet on this subject. I have 2001 Jetta. Have flushed and filled with VW coolant. Always the one sensor rod closest to firewall corrodes. have replaced 2 times. No coolant migration. Even after flush/fill, coolant gets brownish. Could this be oil and could it be due to a bad oil cooler or seal? Thanks
A good aftermarket bottle was about 7 euros. Oem is 35. Change the bloody things, they're cheqp.
in Argentina several volkswagen do not bring the sensor ... hopefully they bring 4 wheels, engine and chassis
Can you tell me what the voltage is supposed to be at the coolant bottle? and THANKS for the video!
Thanks for the video! Saved me some dough and a trip to the dealer for something in my wheelhouse!
Vw Tiguan Tsi 4 motion send to vw dealers for auto transmission services reply no oil filter in it for2012 suv, is correct
Question, my coolant looks dark and has a bit of foam or bubbles on the top. Will flushing it resolve this.
Might have to flush a few times but probably
This would be a great video to launch off into VW coolant system woes. I had a coolant light and a p2181 error on my daughter's 2003 Beetle. I replaced the reservoir and still had the coolant error.😬 it ended up that the thermostat was stuck open and the engine wasn't getting up to optimum operating temperature. The water pump wasn't suspect because we had already replaced that due to a broken plastic impeller and previous coolant error. All said and done, we still love our driveway full of VW cars!
My 17 year old bought a 2003 Volkswagen beetle. We discovered tonight that this tank has a white foamy looking substance in it , and it STINKS. There is no water in the oil from what we can tell. Has anyone else had this issue ? Thanks in advance
That’s a super weird one!
I need help I have a leak near the throttle body and I don't know what the part is called
where can I get one for 2018 Q5 and what is the price range?
Coolant Fault every next day level went lower so what should I do ?
Is filling a mk7 gti cooking system as simple as just filling this reservoir? No bleeder valves like old Honda’s?
You really need to use a bleeder. They are a pain to bleed
Doing mine tomorrow. Thank you!
is there a diy video on how to replace this part, cant seem to find it
+Javier Gomez there may be. It's one of those pretty straightforward things. 2 screws 2 clamps. Just be sure engine is cold and top the coolant off
If you have time, I have a question. If I'm using one of these expansion tanks in a project, do you know of any way to use the coolant level monitor prongs to set off a custom light? As in, I have the expansion tank, I have an LED. How do I get it to turn on when the coolant is not touching both prongs?
Apparently the prongs are usually connected to something which monitors resistance, and when the resistance gets too high, the light turns on. Creating a simple circuit to do that seems complex. Typically the job of a micro controller. Would be much easier if they connected when coolant dropped like float sensors work.
I was thinking, I could just use a normally on relay and use the two level sensor contacts as the switch lines for the relay. As long as there is coolant, the relay is switched to off, meaning no light. Coolant drops too low, resistance becomes infinite, relay returns to normal on state, light goes on.
My only concern is I will be passing current directly through coolant. Obviously a very small amount, typically in the 200mA or less range. Just not sure if that can have unintended consequences in terms of electrolysis. As long as neither contact is touching coolant, it shouldn't pass current through the whole cooling system.
I realize there is a low chance you'll see this comment. Maybe I'll hit you up on social media sometime. Just figured it would pique your interest if you do see it. Forums were not helpful and I figured if anyone knew, it would be you. Thanks for the awesome videos!
I think part of the solution may be putting the relay in the power side of the level sensor wiring. Provided both sensor pins aren't touching coolant, resistance should be so high that the relay does not switch and therefore it should pass nearly zero current through the coolant.
As an additional precaution, I could use a MOSFET instead of a relay. It should draw such low Amperage that current through coolant is a non issue, especially since the reservoir and connecting hoses are plastic. Since a MOSFET is Voltage switched, provided there is high resistance, it definitely shouldn't switch without coolant present. I'd need to make sure the resistance through coolant wasn't so high it would never switch though.
At any rate, if you have more insight, please let me know!
Are you the guy who made a Scotty Kilmer parody video?
@@rudolfhuijs4526 That is indeed me!
@@802Garage That video made me laugh like mad all the way. Then at the end the gas tank goes nuclear and I was pissing. Cheers man!
@@rudolfhuijs4526 Hahaha thanks a megaton! Maybe I'll make another one someday. For now focusing on cool engine swaps and all that. :D
Hey Charles,
How difficult is to do a coolant flush? Need to do one on a 2012 Beetle Turbo. Thanks for all that you do!
+Adrian Martinez not too hard. Many times a drain and fill will do the trick on a car that new :)
Theres a plug at the bottom of the radiator which allows for easy emptying
I have a 1992 VW Cabriolet. The sensor probe that drops down into the reservoir won't stay secure in the bottle. The coolant then comes out of the reservoir when driving, tripping the flashing red light, Anyone else see an issue like this?
+J weird never seen that. Time for a new bottle I think
I Have 215,000+ miles on my 2004 Jetta TDI, got the coolant light and ended up being a leak at the small hose. Speaking from experience...TAKE YOUR TIME CHANGING THIS RESERVOIR- The parts of the reservoir that connect hoses/connector were VERY brittle. The old reservoir doesn't matter but the job is way harder and longer if they break on the inside of hose or even the connector clamp. Cheers and good luck!
Whats the best coolant for a 1995 VR6?
Hello there!!! I'm having some isses in my b6 2010 passat TSI. At cold mornings (10°c here in Brazil) when i start the car, temperature light start blinking. The cooling liquid is in propper level and the car temperature goes up till 90ºc and stay there. If i turn the car off and start again the light stop blinking.....
is it possible to be this bottle issue?
Thanks, and sorry my poor english.
Mostly, yes. I have the same issue in a Polo 2007. I'm thinking to change the bottle as well.
Just refill it in less the 4 hours it's empty
Trying ti figure out If the cap needs an o'ring
My coolant ball exploded today, it's now in 2 halfs 🤦♂️🤦♂️
Yikes
Cutest coolant expansion tank lol
Wafi 31 what wrong if golf 6 is overfloating
Looks like the death star or BB2
Working on a 2005 Jetta GLS with a 2.0 and replacing the coolant bottle after it started breaking down and leaving chunks in the reservoir. Found it while doing a flush with water.
Had one fail and filled coils one and two full of coolant
PLEASE HELP! I just pulled 2 floating “filters” out of my coolant bottle from vw scirocco.. was wondering if I needed them in there? Or they’re pointless.. they seem to be making it corroded
I can hear pressure leaking from my connectors is that bad ?
yes! probably a bad bottle
At what resistance of the coolant would the temp light start flashing? Is it temp related/calculated? Only the pink OEM coolant has the right resistance? What if RO water is added to the cooling system?
The tank only relays coolant level. Not temperature. Temperature comes from the coolant sensors located elsewhere in the system.
hey do you know why my coolant might be leaking? It is a rapid leak in a 2010 vw cc sport, as soon as I put coolant in, it starts leaking.
Water dissapears but you see no leaks? Any idea
Way too wordy. I was waiting for the point
Can a crack on one of the hose plugs be a cause of a leak?
Should the coolant bottle be cold or hot?
I had a couple Volksagens that used a round one just like that. There must be minor differences like the cap and bolt hole locations. Over the years the cap is one change that is easy to see since the color and style changes but they all look interchangeable otherwise but probably are not.
Hi man! Learned a lot on this video!
Unfortunately I have a problem with my cooling system and can't find an answer anywhere..
Everything in the cooling system of my VW T3 works perfect, except one thing.
When my coolant level is low in the round bottle that you're holding, normally it pumps water from the other reservoir (the one that's easy to fill up without opening your engine/hood) but it stopped doing it.. Is it the blue cap that's failing?? Really can't find anything on the internet.
Thanks a lot!!
Weird. Could be the cap.
@@HumbleMechanic I'll order one. Hopefully that's the problem. Thanks for the quick respond! 👍👍👍
No prob. That’s cheap and easy to replace. Just make sure the car is cooled down all the way
2015 passt 1.8 t. Cost to repair instrument cluster and coolant reservoir from dealer?? Problem- car starts but does not idle. Cause- coolant migration through cluster?? Thanks.
Charles
you left one major detail out. what drink is in the bottle. (too small to see on my phone) :)
Got a screen shot...
Blizzard hops is all I can see.
I had the plastic crack around the coolant return, replaced the bottle, and now I'm losing coolant at a furious rate, but don't know from where. It seems to be collecting on the rim around the middle rim of the bottle, but have never managed to catch it actually coming out of anywhere. It's gotta be the cap or the overflow tube, or the sensor port.. but that narrows it down not at all. I tried a new cap and it doesn't *feel* like it is as snug as the original one, and leaking just as bad (if not worse). It's like the tolerances of the new bottle opening just don't match the old or new cap.
I'm using a Skoda Octavia and I saw smoke coming through the air conditioner vents... the coolant tank was empty... i refilled and it happened again after few kilometers... no leakage under the car. I will check the cap
Thanks for all the videos! I have a 2008 mkv GTI, fsi engine. I just developed a bad coolant leak a couple of days ago and it seems to be coming from the lower front area of the engine. Where should I start looking?
Its probably the radiator. I had something similar on mine and it was a busted radiator.
Where is cooling fan switch on 2013 beetle 2.0 turbo.
Built into the fan
VW service wanted to charge $199 to replace the coolant reservoir…. Idiots! This part costs $25 and it takes 15 minutes to replace. I’m following you for more videos! Thanks.
Can u tell me what size fitins on each hoses
02 vw gti vr6 with over 400k and still going. 09 gti as well. Not to mention the rest of the fleet from big rig to diesel 3500 and 2500 and f250 and motorcycle. Out all them vw is the biggest pain between the secondary air injection tube coolant globe the climate controls and radio ignition switch harness cooling fans
I got a 2011 Tiguan, and sometimes I find a puddle under the car where the bottle would be after driving, could the cap be purging?
you forgot to mention that inside those bottles there is a bag of silica crystals..designed to extend the life of the coolant.. which it does not do,, for anyone reading this.. get that bag out of the bottle now,, it eventually breaks,, and the crystals will clog your heater core...open the bottle you will see it on the right side ,,,
Thanks for the video, do you have a video flushing coolant through de vent line of the coolant reservoir? for audi Q7, Touareg, Porsche?
Lol I just replaced one on a MK7 Jetta with 7k miles. 🥴 the newer ones tend to see the cap fail. The cap doesn't vent apparently, and the system over pressurized causing the cap to press upwards and gum up the threads. Then you can't remove the cap without destroying the bottle threads 🤷♂️
I seem to have a failure around the equator of it. If I top up, it leaks out when the car is cool and there is low pressure. I presume that's s venting system failure.
Hi. My son has a 2014 Passat and use`s coolent.Theres no white slime in the oil cap,no pressure an oil resudue in the coolant tank.When the weather was cold white smoke came out of the exhaust. Now in the summer theres no smoke. Do i have to change the headgasket?
Hello. It has a Skoda Superb 2.0 TDI, 2009. 125 kw engine, cbbb code, this morning I saw that my engine oil had black flowed into the antifreeze tank. What can be? I have so much oil in coolant, Greetings from Europe. Of Montenegro. Cool the best channel I watch every video. Thank you.