Dirty Sensor warning and Active Brake Assist lamp on
Thread Starter
Junior Member
Joined: Oct 2007
Posts: 30
Likes: 10
From: Long Island, NY
MB S450 2018 4Matic; MB EQS SUV 450
Dirty Sensor warning and Active Brake Assist lamp on
Started yesterday, the dirty sensor warning message came on, then active brake assist warning light stayed on. The dirty sensor warning indicated the drive assistance functions may be affected. I cleaned the most of the sensors under front bumper as user's manual suggested, but warning is still there.
The interesting observation is that the warning doesn't come on right way when started the car, it shows up after 5-10 minutes of driving. It drives fine. It seems that all the drive assist functions are OK (adaptive cruise control, lane departure warning, intelligent recuperation etc.). Only lane change assist seems problematic.
I made an appointment to have the dealership looked at next week.
The interesting observation is that the warning doesn't come on right way when started the car, it shows up after 5-10 minutes of driving. It drives fine. It seems that all the drive assist functions are OK (adaptive cruise control, lane departure warning, intelligent recuperation etc.). Only lane change assist seems problematic.
I made an appointment to have the dealership looked at next week.
