Brake Light Switch Failure May Cause ESP/BAS Warning Lights on Mercedes-Benz E320 4MATIC

Problem Description and Possible Solution

The ESP and BAS warning lights may illuminate due to a failed brake light switch. Replacement of the failed switch should correct this concern.

Problem Data
RepairPal Verified
Average mileage: 115,187 (43,000–170,000)
8 model years affected: 1998, 1999, 2000, 2001, more2002, 2003, 2004, 2005
22 people reported this problem
Viewing 1 - 9 of 9 comments
Red light comes on states Stop Reducing Break Power and my vehicle brakes barely works or stops the vehicle, The Warning is in Red and also the ESP Malfunction comes on ...Not very safe when this happens just had brakes and sensors done so they are fine
RED brake light warning/Brake Malfunction message as follows: Reduce Braking Power - Depress Brake Fully. Loud beeping noise accompanied warning.
Brakes seemed to work fine after light went on.
had to replace the switch several times, aftermarket switches were bad 2 times.
red light of brake indicates on dashboard. what is the cause.
Replaced the BLS and did the steering wheel left right thing all the lights went out but the BAS light then they all came back on yesterday back to the diag board
ESP and BAS light is on
The esp come on with the abs light
Suddenly ABS,BAS, and ESP warning lights came on. That's car drove well before and after the lights came on. I took it to my mechanic who diagnosed a broken brake switch, he replaced it, all three lights went off, and the car still drives great.
ABS ESP BAS warning lights on after starting when brake pedal is lifted. Not yet fixed.