My ABS warning light came on today and will not go out. I have tested the ABS on a grass verge and it doesn’t work any more. The light came on while I was queuing in traffic for about 40 minutes if that makes any difference. The car is a 1997 C180, 73000 miles. Have any of you had a similar problem? I am a competent DIY enthusiast, but need to know the most likely place to start looking. Naturally I want to avoid taking it to the stealership as suggested in the handbook. Cheers.