robs-mbz
Senior Member
- Joined
- Dec 9, 2006
- Messages
- 279
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- Location
- Newcastle under Lyme
- Your Mercedes
- 1997 E300TD
Having been helped out again by this A1 forum, (BAS/ASR warning) I thought I would add contribution. If you have a similair message displayed and want to prove that it is the brake switch that is faulty, try the following.
Gain access to the brake pedal by removing the trim panel below the dash.
Once you have found the brake switch you will notice that there are two plug connections, one smaller than the other. The larger of the two activates the brake lights, the other, small one is the connection to a normally closed contact for the BAS/ASR circuit.
Remove the smaller plug and short out the two pins in the head of the plug with a short length of wire, switch on the ignition, start the engine and hey presto, no more BAS/ASR warning!
To remove the switch, press in the small catch on the right hand side of the switch and rotate it one quarter turn clockwise, the switch then pulls out of its socket.
I took the trouble to dismantle the switch, the spring contact had broken, rendering it useless.
Gain access to the brake pedal by removing the trim panel below the dash.
Once you have found the brake switch you will notice that there are two plug connections, one smaller than the other. The larger of the two activates the brake lights, the other, small one is the connection to a normally closed contact for the BAS/ASR circuit.
Remove the smaller plug and short out the two pins in the head of the plug with a short length of wire, switch on the ignition, start the engine and hey presto, no more BAS/ASR warning!
To remove the switch, press in the small catch on the right hand side of the switch and rotate it one quarter turn clockwise, the switch then pulls out of its socket.
I took the trouble to dismantle the switch, the spring contact had broken, rendering it useless.
