Never Seen THIS AIRBAG Warning Before...(BMW 525i)
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- Опубліковано 10 вер 2024
- Customer brought his clean 2004 BMW 525i in for some maintenance and to address a pesky AIRBAG WARNING message.
Being a BMW, turns out to be not your typical "Airbag" fault code...
Let's do some research on this fancy system and pinpoint the root cause of the problem.
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Enjoy!
Ivan
Your comment about enjoying working on those had me smiling. In the late 90’s I had a European version of that same car while living in Italy (520i…maybe?). It was indeed flat, smooth, and powerful. Well the fuel pump went out and I was absolutely cursing the prospect of dropping the tank in my tiny garage. Just on a whim I pulled the carpet back in the trunk and sure enough, there was a little access hatch. First time I had seen that! Job took like 20 minutes.
The fuel pump access hatch is pretty common on most cars with the exception of many American cars because it would have cost an extra 5 cents per vehicle.
@@joeyt6089 Is one of the reasons why I own Honda's, I work on my own Cars and Hate Stupid none accessible parts, The Crazy thing is I almost never have to screw around with those pumps in a Honda, Haven't had a bad one Yet🧐.
My 98 Volvo had one. The mechanics I went to wanted to drop the tank anyway for $400. Went elsewhere. It was for the rollover cutoff check valve, which was on top of the tank right at the access hatch.
@Werner Danler interestingly, AWD Volvos of that vintage had no access hatch, but you could cut your own in.
Some Japanese cars have it most BMW s do.
Resistance is futile. 👍🇺🇸
Just got me a can of that deox and a couple other items from the PAHD store. Didn’t realize there were so many different ones to choose from. Hoping one can will be enough for this Escalade project! 🇺🇸
@@brianw8963 😊
Hi Ivan. AUC sensor = external air pollution sensor (works out if it needs to switch on auto re-circ). Fogging sensor = sensor located in the rear vision mirror cluster and detects a fogged up windscreen, and automatically turns on the windscreen defogger.
You did all of the under hood maintenance i.e; t body clean, MAF clean, all filters serviced, spark plugs, and a water pump in an hour? Im impressed!
It’s got the M54, easiest engine I’ve ever worked on for sure! I own an E46, same engine, love it! Mine is an ‘03, 158k, owned it 17 years and never want to give it up.
Sounds like a James Bond gizmo disguised as safety feature. This is Engineer level troubleshooting just looking at the schematic! Even the interior connectors are exposed to extreme temperature and humidity swings that can speed up the oxidation process. You nailed it by checking the easiest thing first.
Hello Ivan, Always enjoy watching your critical thinking process on troubleshooting. I was telling a retired Air Force brother about you and how your process reminds me of him and a late friend when we have to troubleshoot Jet Engines. Your would of been Guy everyone would look to fix their Aircraft.
Thank you for taking the time to share your process.
Also, I wish you live in Oklahoma 😢.
Thank you again!
The problem was fixed due to a Clean & Reseat the connector. Great job!
I've noticed that BMW has their own trouble code numbering and code description system and its completely different from everyone else's. Definitely makes using different scan tools difficult. Additionally with the newer BMW cars maintenance is much more complicated. You can't even replace the battery without having to reprogram the new battery information into the car's module system. The smart charging system won't work without everything being reprogrammed. BMW does not like other people working on their cars they want you to have to go to the dealership. Glad you were able to fix this one without a bunch of hassles.
Since there is unseen contact corrosion there, being right next to the battery I would add a tiny dab of dielectric grease after the deox. You should check that the battery is vented properly. Acid fumes will definitely corrode those tiny pins and socket contacts. Nice job young man!
Im in the UK and have had this issue for around two years, in the exact same car. We have to pass the MOT yearly so just before each inspection I wiggle the BST and clear the codes and luckily the code goes away long enough for me to get through the inspection. Cant believe how lucky I am that you posted this video so now I'll try this as replacing the air bag modules etc is way too expensive. Thanks man!
I'm feeling ripped off...i want my bonus footage. 🤣
Nice work. I think I agree that the explosive connection at the battery terminal may not be the best option.
Kinda common on those with that system... shouldn't report as an Airbag problem though, in my opinion...
Nicely done!
Pine Hollow Auto Diagnostics "Hurt Locker" edition.
Loving your videos Ivan which you make them easy to understand and follow thank you for the great work. Paul from 🇬🇧
Loved the No bonus footage required!
Never seen an E60 with so less faults.
Excellent work
never seen a german car you meant to say [last 20 years]
The BMW six is pretty simple to work on depending on the year, what needs to be done and the model. Generally, the newer they are the more difficult. And, "If you have no codes you don't have to wear the seat belt". Around here, tell that to Officer Friendly.
Perfect timing, just hopped into bed and now I can watch Ivan work his magic.
Kinky.
I love the no bonus footage required! 😅 Nice work!
I have a '99 VW Jetta (early MK4) . All my air bag faults were cured by cleaning connections, same with the ABS :)
Great diag, back in the day when i worked at the dealership, I would guess that would have been replaced, verses doing exactly what you should do. Test and verify. Hence why I changed occupations.
Sounds like you're happy to work on this BMW
😊 You will not find a better Auto Diagnostic channel on UA-cam !
Great job Ivan you didn't say Eurotrash once😁🇪🇺❤️
This BMW was actually very pleasant to work on! No special tools required! 😉
That battery disconnect using mini explosion is also called pyrofuse. Mercedes uses it too, some at battery positive post, some at f32 prefuse box. Actuation is similar to airbag. Monitoring it is via resistance, i believe above 5 ohms is considered too high. In an event of a strong enough crash/impact whole car on purpose loose +12v by firing of the pyrofuse, for prevention of fire. Its quite a sealed system without actual spark exciting any hydrogen or fuel vapor. Similar to race car on the hood manual battery disconnect if for fire prevention
Previous mechanic accidentally shorted some wires and blew that explosive battery disconnect on a Z4, i crimped the battery wires back together and used a resistor to trick the SRS module and kept it happy.
Wait a minute?You mean the entire car didn't explode along with the building it was in?
I have fixed several Ford airbag issues by unplugging and cleaning the connector to belt pre tensioner. Usually under drivers seat.
Ivan, looks like a sweet little ride. Thanks for Sharing!🙂
Lol. BMW always has issues with electronics stuff. But airbag scares me lol. With those voltage checks or resistance too. It sounds finicky to work on to make the airbag happy. Weird stuff. But great video lesson, Ivan!
Tiny pins and connector receptacle. Unplug and connect a couple times, problem solved. Good one Ivan!
I'm subscribed to all your videos but I actually have an E61 in the driveway with identical issue! Thanks and going out to the garage to do some battery work on the BMW. Cheers!
The terminal location seemed so clean, right? Except, being strapped close to an automotive-type battery typically involves a corrosive environment (outgassing fumes); scrubbing of the contacts was the fix. The deoxit mineral spirits component should provide a modicum of future protection.
Hopefully it is a vented battery, and the fumes are led outside. At least, they are on my Volvo
@@bryanlatimer-davies1222 I think every car I have seen with a rear battery has a vent tube, definitely all Mercs and BMWs
@@arcadeuk Thats what I thought
@@arcadeuk At least with the OEM battery, but often the aftermarket replacement does not have the vent connected correctly.
I had an F250 Super Duty do the exact same thing...
Nice find and cure!
Ivan, I was thinking there was going to be some dampness under that trunk mat and green crusties in that connector . Maybe just the start of a little corrosion that the car's computer can detect.🤔
Remember Ivan, BMW stands for "Big Money Wasted." So, this is one BMW you like to work on? Great video!
That's a great looking battery stable power supply you got there. TopDon is tip top in quality. I wish I could afford to own one. They are pricey and unattainable for many of us, though. Hopefully, the price will decrease so I can own one.
Great video too. Good tip about unplugging, de-oxing and plugging back in. Those bags are rather sensitive.
Georg Ohm is proud of you!
Great stuff but I’d like to have seen you do the water pump 👍👍
I work in a body shop. So, I've had to replace quite a few of those battery cables. lol. You said that was a 04? That was a very clean example. But yeah, general maintenance on those cars is not very troublesome. A starter motor replacement is a bit of an exercise though. lol.
Ivan, I suspected in the beginning after understanding the circuit operation...You were indeed "Fretting" over the issue. Nice fix!
When I see a battery in a space like that and all the connectors, fuse blocks it looks like a pack of troubles waiting to happen. Even vented that area will have acid fumes, and different humidity levels . and why would a engineer put a critical safety connector in such proximity of a battery? "Perfect" systems need perfect maintnance and that is very hard to find. You did a great job locating the fault, A dealer would probably sold bags sensors and modules, if available...
Got to love pin fitment issues, airbag and mux voltage circuits are the worst, I like using the air bag simulators with the known resistance in the aes wave terminal kit. 👍great fix
Beautiful car 2004 BMW 525i
Yeah that battery disconnector 9000 is actually like a guillotine that's explosively fired into the cable it's pretty sweet lol
I sit here watching a master at work.
Beautiful! I am sure you have driven a surge in purchases of DeoxIT, I have a can myself now. I have just purchased a X3 3.0D (M57) BMW of similar vintage and quality, it was making a horrible noise at the front of the engine and leaking coolant everywhere, and the owner was told it's a $5,000 fix (engine replacement). I had a look and took it for a drive and thought differently, offered a $1000 and was able to drive it home. Was lucky with my guess as the problems were superficial and external to the engine (not the timing chain) and waiting on the final parts for the fix. It has cost me a few hundred dollars for the fix. Also pleasantly surprised at easy removal of all electric radiator fan for easy access to front of motor.
Sweet deal!
@@PineHollowAutoDiagnostics years 2000 to 2010 seem pretty good if you are driving the older cars👍
Amazing a BMW that just needed a simple fix
Terminal fretting is a real thing. We use dielectric grease and cycle the connector a couple times.
Anyone putting an explosive device near a battery must be working on a Darwin Award.
Most people believe Darwinian Evolution is real and they live to ensure their trashed eternities to prove God and eternal life don't exist for them.
Just look at all the exploding/burning BMWs littering the countryside! 😊
JUST KIDDING!!!!!!!!!!
.It's actually a good idea. Take a look at what it takes firemen to cut the power from the battery to a Tesla. They have to remove a panel and use a giant pair of cable cutters.with insulated gloves. I think the BMW idea is probably a better idea. 😉
@@stevewhite3424 Lithium Ion batteries burn BUT lead acid batteries give off H2 Which is very explosive. Having a source of ignition near a lead acid battery is nuts. Teslas tend to self ignite, like Chevy bolts or volts and also Kia/Hyundai seem to burn well.
tesla is using pyro fuses near the hv batt too
@@mikefoehr235 So if you really wanna get down to it? Show the BMW's with pyrotechnic battery disconnects burning on the side of the road and I can pull up dozens of pictures of Tesla's. My son-in-law's volunteer fire department in Delaware underwent a free training session given by a Tesla field rep that showed the efforts necessary to disconnect the. Battery from the car. Sorry but the demonstratable risk is completely different and far more likely on a Tesla unless you can show me burning BMWs that caught fire due to the proximity of the battery to the pyrotechnic disconnect. In fact show or cite just one...
A common fault/fix on these cars. The forums are full of it!
Hah I didn't cheat and look at the forums 😅
I’d use Stabilant 22A on those airbag connectors…better than De Oxit !!
Clean it pins on the connector works. I usually cut the connector out and butt connect the wires together to make it does comeback.
(Murphy Law)
I guess, replacing a BMW Positive Battery Cable is a very expensive proposition. Connectors.... I can't tell you how many times reseating a connector or reseating a PCB card has fixed a problem.
Ahh. I live for your bonus footage. 😅😂
My 01 e320 has had the airbag light on for a long time now. I disconnected the bag on the rf door when replacing the regulator.
I did both back doors before without unplugging them
I shouldn't have done it but now I can't get it to shut off even disconnecting the battery doesn't do it.
Oh well!
Need a real scanner 😉
Another great video, Thanks! I love the "no bonus footage required"🤣
Well I'm blown away... (sorry)
Seriously, why do we need such complexity?
Not sorry!😂
Given this cars age and even thou it's clearly been well cared for it's surprising that it hasn't had more of this sort of issue, this is common and expected stuff in the northeast, weather packs are pretty good and have been for a long time but it really doesn't take much to cause trouble
I’ve had that quite a few times, just a dirty connection. Wait till you have an e61 with broken tailgate wiring.
That connector is measuring voltage drop across the generator. That's why when you shorted it, it saw zero voltage drop between the pins and said something was wrong.
But it said OPEN circuit 😅
always exciting to probe explosives!!
Seen these alot before, especially on BMW Z4 with silimair errors
Some of the best german shit I've ever worked on!
Sharp 2004 BMW 525i ❤
Your channel is awesome 👌 👏 👍..everytime I watch I learn just alittle more..and saw your rockauto magnet collection over right shoulder...I gave my doubles way ..
There might be a bit of hype around a multimeter setting off an airbag etc but I can see that it might be a real risk too. I'm no expert when it comes to setting these things off but it's probably a hot wire approach.
How could a meter do it? Static electricity perhaps, if the point of breakdown just happens to be on the surface of the heater wire itself. Pretty remote but not impossible. Another would be accidentally putting the meter across the heater while it is in diode test mode. For the average meter there just isn't enough current to do it but a meter designed for testing high voltage diodes, it might be enough. The last and probably most likely would be accidentally having the meter leads connected to the current (amps or milliamps) terminals when testing the device and instead of measuring voltage from say vehicle - to device you allow high current to flow through it instead. Remember, the range selector on the meter usually doesn't switch the current shunt, it's always across the current input on the meter.
Again, I'm no expert on this so this is just idle musings.
Ivan you are an amazing artist. Thank you for your channel on UA-cam.
The complexity of modern BMWs are almost on par with a modern airplane. 😂😂😂
This one is almost 20 years old! Still has 30 modules lol!
@@PineHollowAutoDiagnostics it's crazy. I'll stick with my basic old Toyota's, a '97 Celica and '04 Sequoia!
Modern cars soon have more computers then a small server farm 😂 good simple fix. I had a simular fault with a abs sensor a while back works perfect 364days a year. The one day it won't work there is no telling why. Just reads jibberish speeds. Only way to fix it is to turn off the car for the night. And it's only on like 1day a year it does that.
Thanks Ivan!
"I can see why some people like working on these". Just admit you're developing a liking for Euro cars 😂😂😂.. We all know it!
I'm sure the owner was happy with all the parts you replaced :-D
Then you pulled a rabbit out of the hat, connector fondle fix : lol.
Nice to have a stress free repair :-D
Life of connector is probably still much longer than vehicle was expected to be used before being recycled. If BMW intended this vehicle to be driven longer, they would have a connector of each type connected to a computer that would measure pin resistance and provide compensation factors to modules having those type connectors😊
That's even more stuff to go wrong.
@@hcox1111, That would be more Cherman Engineering.
Ivan I've had this fault on a BMW made Mini also.
The bmw didn’t stand a chance versus Ivan. Didn’t put up much resistance. Ivan, KING of NPR.
LOL
you should get a airbag simulators tool , they work on most restraints systems components they are like a couple bucks everywhere
Oxidation can cause this … the plugging in and out cleans the connector
I hope no one sees this and gets the idea to just start tampering with airbag systems. 2 reasons. Its dangerous as well as deadly. And very costly if you blow one. Dont mess with them, I watched a guy blow just one curtain airbag on a car it cost 4k to fix. Just one airbag.
Modern cars have them in the dash. The doors steering wheel, seats and celings
Just the airbag system alone can total a car.
Your experience is showing! I remember your training with Keith D! You might have just passed the trainer! I'm sure he's happy with your success!
I need to pay Keith a visit 😎
@@PineHollowAutoDiagnosticsIvan, how long do you think Keith's going to be happy flying a desk? I'm of the opinion that the car fixing marauder will be terrorizing the local shops in North Carolina soon enough. It’s going to be tough for him to find shops open at 3AM as was his custom on Stanton Island but apparently Keith the vampire can now handle daylight with no ill effect.
Another great one Ivan !
Fantastic Job!
Yep great idea. Having an explosive charge on top of the battery. Specially if someone replaced the AGM battery with regular lead acid battery. That build up of hydrogen gas will turn it into a wide body M sport model. 🤣🤣
Had that light on 3 series and was the seat sensor. 11ty billion dollars part and bought an emulator drom ebay for $50
Another great video Ivan
Nice one Ivan. As much as you want to hate “euro trash” I know you are starting to see and appreciate some of the advanced engineering, with thought and integrity on the German stuff. 😅 Give it a few years and I see you rocking around in one. Land Rovers and Jaguars, they are rubbish and I am English. 😂
hehe good one "no bonus footage required".
any vehicle with battery inside, is near always a tube vented type, with it run out the bottom. that way if boil over, roll-over, large off-gassing occurs, it vents outside into open air. no kabooms, from oxygen rich hydrogen gas +p (broken down water - H2O) 2 hydrogen molecule and one oxygen molecule. BOOM.
Nice one Ivan!
NBFR Love it.
BMW :) Calm...let the force flow through you...Airbag repair!
its European ,i see its got a new battery see if it needs the battery reset through scanner as i had to do one on an audi
i think its called battery match on scanner
This car is rigged with explosives! Low current connectors can get slightly increased resistance over time - unplugging and replugging is enough to wipe out any residual patina.
No parts required and no bonus footage required - could be a first :-)
Be aware: its not a Myth that its risky to measure airbag system. Depending on the system and the multimeter it can ignite. It even can ignite by touching it with fingers by body tension. They tried it, its dangerous. It seems that newer components have a safety for that in the connector, if it is unplugged its safer.
I was just wondering if you look for a safety recall before you work on the air bag?
I know a safety recall wasn't the problem, it's just the 1st thing I would have done
I was wondering also, especially if someone replaced the battery and didn't properly install the gas vent tube.
Its a common problem, you can only replace the whole cable.. or disconnect it and place a small resistor..
I was waiting for you to take it for a RIP!
You mean a CRUISE lol... 2.5 displacement in a heavy car doesn't really rip, but it is sooo smooth!
@@PineHollowAutoDiagnostics A good friend of mine graduated from Vanderbilt University and his parents bought him a 1984 BMW 318i coupe. That 1.8 liter 4 cylinder was no ball of fire, but, that car was as stable at 100 mph as it was at 30 mph.
Common problem on these platform 😊
Every problem is common on BMW's
Wait! Isn't the gas generator used for the seatbelt tensioner??? Why would the battery cut-off use a gas generator? Hmmm
Yes, it looks like the device installed in the vehicle is so close to the upper impedance spec that almost anything can cause the system to go out of spec and generate an error. I don't know about anyone else, but that seems like some very questionable engineering or a planned failure point to increase dealer service department revenue.