Hello fellow techs, having a problem after replacing the brake booster on this Mercedes. It has the electronic Brake Assist System and Electronic Stability Program. The initial problem was a hissing sound from under the dash and a hard pedal. Found the booster...

FIX posted 10/23/2012

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle