Audi Q7 Mirror Heating Fails During Winter Months

As someone with moderate experience working on cars, I had a similar winter driving issue with my 2013 Audi Q5. The mirror heating stopped working during cold weather, showing the same symptoms. After checking with my workshop, they found a loose cable connection between the door wiring harness and the mirror heater element. The car electronics diagnostic showed similar error codes to what you described. The fix was relatively straightforward, they repaired the damaged wire connection and checked the temperature control functionality. Total cost was 95 Euro for labor and parts. This was much better than replacing the entire mirror unit, which would have been significantly more expensive. The repair took about an hour, and the winter driving experience has been perfect since then. To help further with your specific case, could you share: Have you noticed any other electrical issues in the door? Does the mirror adjustment still work normally? Are both mirrors affected or just one side? Have you had any recent work done on the doors?

Following up on my initial problem. I checked more details and ran additional tests. It turned out both mirrors are affected and mirror adjustment still works fine. After some troubleshooting, I noticed the problem appears consistently when temperatures drop below freezing. Car electronics test showed fault code P0562. My vehicle has 167649 KM and last service was done 2 months ago, but this issue wasnt addressed then. The temperature control module seems to recognize the mirrors but fails to activate the heating elements. Your suggestion about checking the wiring harness makes sense. Before investing in a complete mirror replacement, I will have my workshop inspect the connections first. The electrical fault might indeed be in the wiring rather than the heating elements themselves. Thanks for confirming a similar issue could be fixed without major parts replacement. The 95 Euro repair cost sounds much more reasonable than what I initially feared.

Thanks for the additional details about your Audi Q7 issue. Since fixing my Q5s mirror heating problem, I learned these symptoms, especially with fault code P0562, often point to a voltage supply issue rather than the heating elements themselves. Your description of both mirrors failing simultaneously strengthens the case for a wiring or voltage supply problem. This matches what I discovered with my vehicle repair, the root cause was at the power supply connection point rather than in the rearview mirror components themselves. The consistent failure below freezing temperatures is a typical pattern for voltage-related issues in car electronics. When the system demands more power for the mirror heating, any weak connections become more apparent. From my repair experience, have your workshop check: Main power supply to the temperature control module, Ground connections in the door panels, Wiring harness flexing points near door hinges, Connection points at the mirror bases Vehicle safety features like mirror heating usually have redundant circuits, so dual failure strongly suggests a common power source problem. Based on the repair cost for my similar issue, you should expect labor charges between 85-120 Euro depending on access time needed.

Thank you everyone for the helpful suggestions about my mirror heating problem. The fault code P0562 combined with both mirrors failing does point strongly to a wiring issue rather than failed heating elements in the rearview mirror units themselves. I scheduled an appointment with my workshop for next week. They will first inspect all the wiring harness connections, particularly around the door hinges where vehicle safety systems often develop issues. This makes more sense than immediately replacing both mirrors, especially since the temperature control and adjustment functions still work. The cold weather consistently triggering the problem matches what others experienced with voltage-related faults. Hopefully the repair will be in the 85-120 Euro range mentioned rather than needing complete mirror assemblies. Will update once the workshop identifies the exact cause. For now, Im relieved this might be a straightforward wiring fix rather than a major component replacement. Thanks again for sharing your similar repair experiences, really helped narrow down where to look first.