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IIRC dealerships will replace what’s needed for free, authorized by Toyota. Dealerships have been misdiagnosing as head gasket failure too, so...
ditto; sounds like Bisco is correct. To ensure it's the heat exhanger that is leaking; loop it out of the cooling circuit and do a cooling system...
A/C 's electric, so it's not exactly the same as system most mechanics are used to working on. I hope you're not asking me / us what the...
Yeah. I suspect that after the supposed fix, either there was a leak that was overlooked until too late, or else the pump wasn't pumping for some...
Welcome!! 1. test for coolant leak - should be positive test. 2. loop out the Exhaust gas heat exchanger, then retest. If the test is now negative...
I had the exhaust heat exchanger bypassed at 250k miles. I bypassed the exhaust heat exchanger at 250k miles.
Any info on what % of all priuses have this issue. I have no problem with that but always checking it just to make sure. I also have this bypass...
Others have had the part replaced with the updated part under the emissions warranty, like stated earlier in the thread. If it was the same...
you have no coolant touching the sensor, that's why it's reading low. The sensor needs to be surrounded by coolant, for an accurate reading. Take...
How many miles on the car? If you're losing coolant but there's no visible leak, have them check the exhaust heat exchanger. They tend to fail...
Take it to another dealer. I don't know how they would scope the leak, since the exhaust heat exchanger is behind the CAT and in front of the...
some of the early ones leaked. by the time the temp light comes on, the engine is blown. and of course, toyota tried to blame owners until the...
congrats and welcome back! gen 4 has been pretty solid. infotainment screen quirks, windshields cracking repeatedly, leather peeling on steering...
Is that a calculated amount of coolant loss based on the 1/2 gallon of coolant you refilled two days ago? or have you been watching the coolant...
Short answer is yes; but not directly - Which is why Toyota is thumbing their noses at that theory. The heat exchanger leak will cause a low...
Gen 4 has been getting coolant leaks in the exhaust heat exchanger, which necessitates replacement of that whole section, including catalytic...
Another hypothetical cause of water in EGR passage, is leakage within the cooler (heat exchanger) between the exhaust passage and its internal...
Could not have been said better. I agree lots of problems with the heat exchanger.
Most likely leaking in the heat exchanger in the exhaust system. We're starting to see more and more of this in gen 4, but I think yours might be...
That would be a long way to go with a borescope, since the heat exchanger is located between the drivers and passenger seat in that center hump....
