Are the pumps on the late W124s a separate unit like PSE pumps on later models, or the “dumb” kind like the “football” found in W126 models?
I ask because the “dumb” pumps don’t have any logic, just a pressure actuated snap switch that reverses rotation, changing from vacuum to pressure and vice-versa. If the pressure switch fails the pump is more or less junk. -D On Mar 12, 2020, at 10:35 AM, Jim Cathey via Mercedes <mercedes@okiebenz.com> wrote: >> ...the CLS control circuit, which ... is integral to the pump, is the faulty >> component. > > Yes, if the signal from the door lock is indeed correct, it is. At this > point diving into the > pump can't hurt. My first suspicion would be bad solder joints, but > re-capping too while > you're there couldn't hurt. Meanwhile, try to scare up another pump in case > the operation > is not successful. > > -- Jim > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
