This afternoon I show my car to the buyer that came down to take a look, test drove it and everything bought the car picking it up this sunday Five hours later while I was driving the message displayed one or more Malfunction BAS-Brake Assist Visit Workshop, ABS-Visit Workshop, And ESP- Not Available Whats going on? I shut the car off and restarted its was fine for ten min..or so The message displayed came back. Any Idea?? Should i unplug the battery? my car only has 44,000 miles its a 2001 C320 and the buyer is goin to pick up this coming Sunday HELP PLEASE!!!!!!!!!!!!!

 

Checking the manual book With the ABS malfunctioning, the BAS and ESP are also switched off. Both malfunction indicatior lamps come on with the engine running.

If the charging voltage falls below 10 Volts, the malfunction indicator lamp comes on and the ABS is switched off. When the voltage is above this value again, the malfunction indicaor lamp should go out and the ABS is operational. So whats really goin on I have a brand new Battery replace few months ago should i unplug the battery?? Or you guys think its the Sensors still I really don't want to spend $$..

 

When all those brake-related lights come on at the same time, it usually turns out to be a defective brake light switch. It's under the dash and trips when you press the brake pedal. They're under $20 and usually called a stop light switch by the retailers. I'd try that first since it's a cheap and easy DIY fix, if it's the problem.

 

this happen to me on my '99 c230 my bas/asr light came on and the way i got rid of it was i went to the dealer i bought a brake pedal switch and i changed it my self and the light was gone. It took me 30 min. to change it.

 

Check out this video!