Auris AC and Temperature Issues

Whoa, sounds familiar! I've got an Auris too, and I had similar HVAC system problems a while back. Engine cooling was all over the place. Was your temperature gauge going crazy, too? Could be a coolant leak messing with the sensor malfunction.

The temperature gauge seems normal, but the error code definitely points to the heat exchanger temperature sensor. Did your error messages specifically mention that, or was it something else?

Yep, the error was related to the heat exchanger temp sensor alright. Honestly, after chasing ghosts for a bit, the workshop guys said it was a defective air conditioning control unit all along. Saved me a ton of headache just letting them diagnose it properly.

Thanks a bunch! That's super helpful. I'll take it to a trusted workshop and get the AC control unit checked out. They quoted me around 980€ for the repair – hopefully, that's all it is!