Overview. The ETR switch senses evaporator temperature and cycles the compressor on and off. As they age, these switches drift, causing slow cycling and big swings in vent temperature.
Fitment
- All W116, R107, W123 and W126 (replaces 003 820 24 10)
Cross-reference part numbers (this switch replaces):
- Mercedes-Benz A 003 820 24 10, A0038202410, 0038202410, 003 820 24 10, 003 820 2410, 003-820-24-10, 003.820.24.10
What’s included
- ETR switch with 12 inch probe
Installation
The probe inserts into the evaporator. The bracket can be anchored with either 1 or 2 screws.
