mtndoc2

What does BAS/ESP light on dash mean?

msp177

Probably the brake switch is out

Black_magic

This happened to me some time ago. I believe it refers to your brake assist system and your AWD (electronic stability).

If the light comes on and stays on, there should be an electronic service/fault code that can be read off from the car using one of those electronic instruments (I forget the official name).

Mine ended up being a $70 part that sits just behind the instrument cluster that I could have easily changed myself had I known... MB charged me $200.00

scottymac

I was able to turn it off by reinitializing system. Try this - while car is running crank steering wheel all the way left and then all the way right. Thjis worked on my 02 ml320.

Good luck.

msp177

Been there done that! Does anyone know if the BAS/ESP is connected in some way to the brake pad sensor?

msp177

Hey Black Magic,

Do you recall the part that was changed by the stealership?

msp177

Man,

These idiots lights are a big problem! I have the (( and an 01 ML320 and both have idiot problems. The ESP/BAS light like to be on but doesn't affect the car whatsoever. I put a business card over them so I don't dee them...saved a bundle doing this and it doesn't bother me one bit.

waikoloa 320

i to have a business card on my dash but the cruise control do not work when the Bas ets lights are on

sosh

The light means that there is a fault with either the brake assist or the stability control. Ignoring it can lead to a dangerous situation as these are both very important safety systems in your vehicle. Have it diagnosed by a dealer or indy with a STAR system and then correct the fault. Hiding the light behind a business card is a stupid thing to do when personal injuries are at stake.

rogerkhartman

my bas-esp lite is on, but the abs system does work when I tried it on snow...but it does not shift out of park until I manually release it by putting pen in the slot under shifter ...is it ok to drive..........

anjy834u

mgacable

I was driving down the road, and played with the cruise control knob. All of a sudden my car started slowing down in a pulsating way. I thought that it was going to die on me, but it soon came back to normal conditions. My BAS ESP light came on at that time, and stayed on untill I turned the car off, and later restarted it. 5 days later the same thing happened, but this time I had not touched the cruise control lever. Does anybody know what the problem could be?

Maj. Dundee

The brake light switch not only turns on the brake light, but it send different signals to the Traction Control system and cancels the Cruise control.

You can do one of two things:

1. Remove the cover under the driver's side instrument panel and with the truck running, depress the brake pedal by hand and with the other hand pull the plunger out as far as it will go. Then release the pedal. Then lift the pedal up by hand and then release.

2. If the problem continues replace the brake light switch purchased from the dealer.

There has been a recall for faulty brake light switches that does not cancel cruise control and being that you are probably a new owner, M/B has sent the recall notice to the last known owner on their records. Call 1-800-FOR-MERCedes and speak with Customer Services and ask for the form to be sent to you or they might take the info over the phone. Also ask that you would like to receive the RECALL notice for the brake light switch.

alphonsohall

As above........brake light switch faulty.

TJ Montieur

Man, this worked for me. Thought i had a bigger problem. As soon as i turn all the way left then all the way right it went off .