Posted by chriscase on Monday, June 11, 2007 at 10:30:34 :
In Reply to: Mercedes gas cars had them... posted by Hank on Monday, June 11, 2007 at 04:01:53 :
Brake boosters are there own reservoir. They should hold enough to apply the brakes twice with he engine off. They ought to hold it overnight too. That is a good way to test them for leakage.
I suspect that MB used the electric pump so it could pump up the system, even with the engine off.