McLaren 12c 2012
I'm at the mercy of a dealer right now. Perhaps you could help by answering a quick question. I had my 2018 570s in the shop for a weird transmission error message. They said nothing was wrong, couldn't replicate the issue, etc. However told to replace my thermostats... specifically "REPLACE THERMOSTATS - TECH RECOMMENDS REPLACING THE THERMOSTATS DUE TO ACTIVE FAULTS FOUND IN THE ECM" which I paid them to do. I get the car back and it throws a CEL in five min. I send it back and they said "099 REPLACE ENGINE COOLANT TEMPERATURE SENSOR CUSTOMER STATES A CHECK ENGINE LIGHT IS ON" Long story short, I talk to the service advisor and explain that this feels like they just guessed at the code and threw thermostats at it, but then now they realize it's the engine coolant sensor. He's trying to tell me that the thermostats have a sensor in them too sensing how much it's supposed to open etc. Sounds to me like BS and I'd like to know: a) do the thermostats have sensors in them like he's saying? b) what's my argument to prove that they overcharged me and should at least fix the sensor gratis?Welcome mate, see, these cars are really fine to own if you have help, if not you are at the mercy of the dealer, and that REALLY sucks. Most of the time they create more problems as well.
they do not. Those are heater elements. They are used to bringup temp faster. They are not reaponsible for water temp readings.correct,thermostats have a sensor built in.
I just did some spirited morning driving on the twisties. After about 15 minutes power was cut and the car had water temps on max.
I pulled over and am let her cool down. It is no longer on max and orange but I am surprised this happened after such a short time driving her.
She made it home ok but it appears there might be a sensor issue as there wasn't any fluid where she slept last night. Water levels were on the high side besides not pushing her hard.
Any advice is appreciated.
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Just to follow up and I'll refrain from further comment after this so as to not further derail the thread...they do not. Those are heater elements. They are used to bringup temp faster. They are not reaponsible for water temp readings.
there are 3 sensors responsible. One on each main water pipe, and one in the cylinder head for head temp.
Can you post your exact symptoms and error codes pls thanks
note that if the water pump seal has failed, you will get gearbox and clutch overheat messages and all kinds of things pop up related to temperature