Car tells me its overheating but its not. It does it when i turn the car on and the heater kicks on by itself. What is it!!!!!!!!

 

Really.... No one?

 

Change the temperature sensor ,, then see what it does

 

Read the fault codes?

 

unlock secret obc menu (see youtube for instuctions) and look at menu 7 for coolant temp on a cold engine. If it's crazy, it's the temp sensor

 

I have already changed the the temp sensor and replaced a hose. And flushed fluid and put new coolant in.... Uuuuuuggghhhh this junk is frustrating. Is there anything thst is suppose to be done after the temp sensor is replaced??? Like programmed or something... Seems like everything in this car needs to be programed...

 

Throw a new thermostat on there . It's not expensive to replace .

 

Codes?

 

have you actually checked the live read out of the temp sensor on the dash with the secret menu?

 

Ok so im hecked the secret menu.... While at idle the car stays a a steady 99 to 100... No issues there... The engine cold was at 24c. AgIn no issues.... Now, when i turn the heater on while not driving the reading went up to 105 and didnt go any higher.... Still within the norm according to what i read.... Now i started driving with the heater on.... Within 3 mins it went up to 125c. Which gave me the overheating lights.... So i shut the car off for about one min and turned it back with no heater and started driving and there were no issues.... Wtf? With the ac there are no issues as well... Its just the damn heater. I just had the temp sensor switched about two weeks ago and the engine was completely flushed as well. Bout a week before that i changed the oil... What is it?!?!?!?