Seat Tarraco mirror heating problem

I experienced a similar issue with my Tarraco's car mirror heating. The rearview mirror heating was intermittent, especially during cold weather. Have you checked the fuses related to the car mirror temperature control system? Also, inspect the wiring harness leading to the car mirror for any signs of damage or corrosion. It's often a faulty connection that causes these kinds of issues.

Interesting! Where exactly did you find the wiring issue on your car mirror? Was it inside the car mirror housing itself, or further down the line? I've checked the fuses, and they seem fine, so I suspect it might be a cable issue like the error memory suggests.

In my case, the problem was indeed located within the car mirror housing, specifically where the wiring connects to the heating element. Given that you have an error code and have already checked the fuses, it is highly probable that you have a defective cable or plug connection. I would strongly recommend that you consult a qualified technician to diagnose the fault. They will have the necessary tools and expertise to safely disassemble the car mirror and identify the precise location of the defect. Do not attempt to disassemble the car mirror yourself if you are not experienced in automotive electrical repairs. It could cause further damage or personal injury.

Took it to the workshop, and you were spot on! They found a corroded connector on the car mirror heating element. 95€ later, and I can finally see clearly in this cold weather again. Thanks for your help!