Have you replaced the bulb?

If not! do.

Still no light?

Replace OVP!

Still no light?

Check connections on the ABS unit!

Still no light?

Replace ABS control unit.

__________________
600SEL '91
300E 4Matic '88
240D '83
280SE '77
350SE '73
The most complex systems can fail in the simplest way.
Contra verbosus noli contendere verbis, sermo datur cunctis, animi sapientia paucis.

i don't believe in the lord! He's never bought me a Mercedes Benz.