Excursion Fog Sensor Error

Greetings. The symptoms you describe, combined with the fog sensor error, do indeed suggest a potential link. The fact that seemingly unrelated systems are failing simultaneously points towards a central component or connection issue. A faulty cable or a defective plug connection associated with the fog sensor could very well be the culprit. The fog sensor often communicates with the climate control system, which in turn affects the AC, mirror heating, and even the windshield washer system in some vehicles.

So, you think it's the sensor itself, or just a loose wire? Is there any way to test that without special tools?

While the sensor itself could be the issue, a loose or corroded connection is the more probable cause, given the cascade of failures you're experiencing. Think of it like a power strip with a loose plug – one bad connection can knock out everything plugged into it. Testing sensor output usually requires a multimeter, but visually inspecting the wiring and connectors for corrosion or damage is a good first step. Given the complexity and the potential impact on multiple systems, professional diagnostics at a workshop is advisable.

Thanks for the info! I checked all the connections I could find, and everything looked okay, so I ended up taking it to the shop. Turns out a wire going to the fog sensor was indeed faulty. They fixed it for 95€. Everything's working again!