Prius Hybrid 2018 / coolant leak from exhaust pipe / built-in heat recirculating system
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- Опубліковано 23 сер 2024
- Coolant from exhaust pipe with built-in heat recirculating system. Replaced exhaust pipe sub-assembly due to faulty exhaust heat recirculating system. after replace the exhaust pipe everything fine, and coolant no longer leak, coolant reservoir always on the right level.
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This affected 2016-18 prii. A lot of folks misdiagnose as a head gasket. Good job!
i think its more than 2018 given my 2019 is going through the same issue
2016 Prius 3 -131,234 miles
Just got diagnosed missing fluid just found same problem…Toyota/California covers the problem under warranty California has an emissions warranty 150,000 miles anybody else with this problem California highly suggest
wait a second: 2016-gen 3? i thought gen 3 is 2010-15. I just changed my head gasket at 150k, because toyota told me they saw seeping coolant inside the chambers with a boroscope. hope they are right.
Thanks for posting
you can also bypass that crap for zero cost if done under the hood or with a U shaped hose and two connectors from below and connect the two hoses shown, I'm going to do this on mine even before it starts leaking, it's seems like quite an useless feature for the problems and expensive repair it can bring you, this is mostly for anti pollution regulations and just cabin comfort in winter, fuel efficiency ?
Did u ever do it?heat work?
Changed mine 3 times
My 2016 Toyota Prius has a refrigerant leak. I fill it up every day and it runs empty a few hours later. I don't see any signs of leaks on the chassis. I've driven it for about 270,000 miles. Toyota Longo 4s said it would cost $4,800 to repair it because they found water in the engine with a probe. Is this crazy? Such an expensive repair bill!
Prius V 320 000 miles . Loosing coolant in exhaust everyday.
You can check the exhaust pipe, electric water pump if no leak check the head gasket remove the spark plugs if there a sign of coolant inside the combination chamber
where are you located ,i have a 2019 highlander hybrid and i want my exhaust replaced ,it’s leaking coolant from the box underneath in the exhaust
my 2016 Prius Two stopped after Dealer fixed 170171P - recall problem. It ran ok for about 5K miles after . Currently my odo is 51K. and Check Engine gave these codes P00B111, P011511, P148F00 AND P319000 the dealer is saying engine has to be replaced. I did not see any smoke, no rattling/ big noise. just couple of lights went on and then engine stopped
Could be engine seized that is why recommend change engine
i have a prius 2017 touring and i just change my exhaust heating pipe that coast me more than 2000 $ and the car has 140000km it is a shame for toyota that never moved and make a recall because toyota should be responsable and we dont have to pay for it
Yes should be warranty, exhaust pipe is expensive parts
U dont show DOING IT? Flange was cracked, did they bottom out? What caused it to go? Only over 11,,000 miles isn't much. How did u test?
You don't need to test, if you see the coolant sign on exhaust pipe flange the heat exchanger is faulty, you have to replace new exhaust pipe assembly. The last part of the video you can see how much coolant was inside the exhaust.
@@pinoymechaniccanada wow! I SEE THAT. They should make exchanger out of STAINLESS. 🤔🇺🇸👍
Wow congrats broe your amazing 👏
I had a 2016 with 82000 miles and from the engine it looked the same meaning one reservoir lost coolant and the other was full, but my car did had smoke coming from exhaust but the engine run beautiful, I thought it was the head gasket but there was never coolant in oil. I ended up selling it to carmax for $14000
Sad to hear that, if you have good mechanic it will fix cheap and easy maybe
@@pinoymechaniccanada The 2 mechanics I talk to that own shops said that it was the head gasket, later when I sold my car I told them that the Prius has a coolant hose that goes to the CAT and they were amazed. I think that a lot of mechanic don't know the Prius 4th gen had the coolant hose to the CAT.
@@TheGlave80 The 4th gen doesn’t have head gasket issues. A lot of terrible mechanics out there who aren’t aware of the heat exchanger issue..
Weird problem. 2012 Prius, 145k miles. Oil changed religiously at every 10K, 0W20 full synthetic. Never driven at low coolant levels. Sudden loss of coolant on the highway. drove 200 miles one way, no problem. on the way back, stopped at every rest area to add DI water, i.e. every 30 miles or so. In each case, there is still some water in the plastic tank. Engine runs smooth, accelerates smooth, purrs like a cat. No white water vapors in the exhaust. Took apart the front, and looked for pink residue around connections and radiator seal lines. No pink residue. Rubber hoses are tightened with original spring clamps, but no pink leaks. Electric water pump is clean. However, there is pink residue at the back of the plastic overflow tank, the firewall and the drive shaft. Sometimes the leak is so big, that it ends up on the front passenger tire and the passenger side doors. How does it go from inside to the OUTSIDE the vehicle is a mystery. Check engine never shows up. The high temperature light comes on and off, sometimes flashing, sometimes solid, then disappears. Driving around town seems no loss so far. Planning to do a pressure test and exhaust fumes test later on today.
Hard to say where is the coolant leak, I suggest bring to Toyota shop for proper diagnose
That’s a blown head gasket but it’s external meaning it does not interfere with engine operation. Only symptoms is loosing coolant and probably some oil as well. Only time it will overheat is due to too much coolant loss. That’s how a blown head gasket start on these Prius. Starts as mysterious coolant loss eventually the overheating caused by it will eventually damage the engine by making the head gasket more several and the overheating causes engine knock
@@ronaldoquintos1675 I do not see loss of coolant on the engine head. I tested the pressure, it stays at 12 psi forever. I checked for exhaust gases in the coolant, negative. My next guess is an air lock. Will apply vacuum on the coolant system and run the engine. Under vacuum the bubbles grow bigger and the flow will pish them out of the system. I wrote a letter to Toyota HQ yesterday. To see if they have TSB on this.
Update: Toyota tested it with boroscope and declared blown head gasket. I opened it, and the gasket appears to be fine. I asked 2 different independent specialists. One said, that if the gasket is out, there is no way of knowing. The other looked carefully, and said: right here, probably. the crack is so small, you cant tell, but there is some discoloration on the edge. At this point I am almost done with puting it back together, i replaced most seals, gaskets, orings, etc. At 150k, it is a good idea to place in some fresh rubber.... There are some cursed bolts that are near impossible to place. The one on the bottom of the egr heat exchanger... i just gave up. it is held by two on the front and two more at the exhaust connection.... the piece you are talking in this video is very exotic. not found on rockauto, and ebay only has a couple of used once. i keep my fingers crossed it was really the gasket, not this damn heat exchanger.
Toyota design flaw. There is a TSB out in this. Dealer will fix for free under 96 months and 80,000 miles.
Yes you are right I replaced the parts under Toyota warranty.
Do you happen to know the TSB number?
The garage just started to smell like burnt coolant, and I noticed two small puddles of coolant on each side of the passenger front tire. (Only about a couple tablespoons. The coolant looked like it was covering the passenger wheel-well, too. The engine reservoir only needed a splash to top it off. I don't see any leaks from above, or signs of leaks, pink crust, etc. It doesn't seem like this is a symptom of the exhaust/heat exchanger system from what I've been reading -- do you know what it might be?
Mostly on the passenger is a water from air-condition drain hose. If your coolant reservoir is always low could be somewhere is leaking, I suggest to bring at Toyota shop for proper diagnose
Toyota dealer don’t know nothing worth a crap. My customers just been to Toyota and paid 300 dollars to diagnose why car is loosing coolant. They couldn’t find anything so he brought it to my shop “PRIUSTEC” of Houston Tx. Sure enough blown head gasket (external type) to see if head gasket is blown. Jack up car and look at left side of engine ( side that’s behind the engine bay) if you see oil seeping from where engine block and cylinder head mate then you have a blown head gasket. Coolant will usually leak towards the front of engine where passenger from tire is. I’m working on one right now same problem. It’s tricky to diagnose because coolant is not getting into the cylinder like a common head gasket failure. Engine runs fine except you have to keep topping off coolant
I will be short !Having same problems few weeks ago i seen my coolant just dissapeare from my reservoir ,gor my mechanic made me a bypass and all good!No errors nothing.I just canceled that part as many others did few mounths ago eidout having any problema!Is a shame for toyota!Mine is corolla 2019 2.0l
Only 18000 miles and this exhaust heat exchanger assembly? My did 161500 before I notice this issue on my 2016 prius. It cost a fortune to replace it. Toyota should do something about this malfunction issue.
Yes they should fix this issue, even the latest model it has same exhaust with heat exchanger
@@pinoymechaniccanada I have the same problem with my Prius 2019 and local Toyota in California wants 2K for repairs. Car has 100k miles and lease is lease is about to expire in a two months. There's a long waiting list for new Prius but I don't want to send the money since I might get a new one soon. Looks that this problem is not unique to my car. A white smoke comes out every few days and I check the reservoir to make sure never gets empty. I'm very tempted to wait and return it as is.
@@josem.1359 Sad to hear that, but only way to fix is to replace your exhaust pipe, cause the more running your car with less coolant it can be break the engine then more money, it should be replace immediately.
How does that fix the problem, it will literally happen again it just a matter of when not if. I would just cut this crap and bypass booty coolant lines going in and out of the heat exchanger
Maybe it will works that your idea 🙂
good job
@pinoymechaniccanada - - Please comment: My 2014 Prius with 233,000 miles is experiencing coolant leak.
My car still runs good. No engine shake. I usually drive fast 75-85 mostly Texas intrastate,
The check engine light randomly comes on and then goes off after a while.
Code P0117
The Temp warning light comes on randomly after driving a while then goes off when I slow down.
I don't see any smoke or liquid coming from the tailpipe or leaking anywhere. I do have to add coolant (about a quarter reservoir) about once a week.
Yesterday I had to refill the entire reservoir with coolant after a 2-hour drive driving 80-85, Then next day drove the same 2 hours at 65 and did not lose any coolant.
Took my Prius to Toyota to check it out. They said they could find no leak but, I need to replace my engine and the water pump. They did not tell me why?
To me, it appears to be a leak of coolant into the catalytic converter.
Maybe coolant is from cylinder head gasket
Sometimes cannot see the leak from exhaust, but if you remove the rear exhaust coolant stay on the resonator
2018 and already problems? I have a 2013 one with same heating system through exhaust and no problem. Weird.
You have gen3, it's gen4 issue
I have 2020 Prius prime and same problem coolant is leaking in exhaust pipe , what should I do please help any Toronto location do you have
No other choice, you have to replace the exhaust pipe. My location is Edmonton
@@pinoymechaniccanada thanks for reply , so you mean change cytlak converter .
@@Rj-22 yes
Does every Toyota Hybrid 1.8 from 2020 have an exhaust with coolant?
Yes, it has coolant heater on exhaust pipe
@@pinoymechaniccanada Plug in hybrids to?