I have a e 250 1997 diesel model, after a few hours of driving the brake pedal goes in and the Abs light goes on.I have changed the front and the rear discs brake pad and tube set.Bleeding the hydraulic system after a few operations the pedal goes down completely. also i have replaced the master cylinder assembly and brake boosters and filled the recommended oil, kindly find a way out for me

thanks in advance

Maria

I've never tried to bleed a system with ABS. However, I have read, on these forums that you must use a power bleeder to do so.

Did you follow the shopmanual instructions for bleeding the brakes?

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I'm not a certified mechanic, but I did stay at a HolidayInn Express last night.

yes all manuals were followed while bleeding

This is just a guess. But with some cars if you allow air to get into the ABS pump you will have to bleed the brakes with the use of a Bosh Hammer or a PST II, these are the special tools used on Porsche brake system if the ABS pump gets air into it. The special tools activate a soleniod that I think activate the ABS pump to bleed it. Maybe you have to that on a MB too it the ABS pump gets air in it.

http://www.benzworld.org/publications/pub.asp?id=303
http://www.benzworld.org/publications/pub.asp?id=304
dont mess with the pump its near on impossible to bleed without special gear and chances are its not in that area where the problem is

e250 uses same as the c250