danut dxd

Hello, I have an e class w213 from 2017 and I encountered the following problems 1- the defogging in the mirrors does not work, both right and left, I looked in the mirror, I don't have broken wires or anything, maybe it's a safety issue but I don't know where is it.
2- the lower bulbs in the mirrors, which should light up when I unlock the car at night, don't work either, both right and left.
Have you encountered any problems like this before? Thank you!

CaliBenzDriver

Good job laying out your mirror issue. This seems like a bad connection between the door computer and the mirror.
Specifically a bad GND because its common to both these functions!

> Suggested troubleshooting:

1. Scan driver door computer for faults
2. Disconnect system battery
3. Pull out the door panel...then:
4. Open up the Door Control Unit!
5. Inspect connections for signs of poor contacts
6. inspect mirror harness for signs of water oxidation
7. Measure ohm: brown wires to chassis GND:

> this should be low 0.25 Ohms and continuous.

Report your findings.
🤞

konigstiger

Pull 203 @ left interior & 302 @ right in an attempt to reset door modules.