PeachParts Mercedes-Benz Forum - View Single Post

Ashman · #7 07-27-2004, 05:01 PM

yes I tested with a test light and volt meter and all appears ok on that end.

No I am not a lawyer, but my father is and grandfather was, and I have learned about certain things in that regards.

As far as calling the guy stupid, I think I have a right to, when you park cars for a living, you should know that if there is a remote with a picture of a lock that is open, that must mean it is the unlock button. it is called common sense, especially in the lot where I was with them parking hundreds and hundreds of cars every night. It is not like the alarm had 20 buttons, it has 2, one with a locked lock on it that is red - that means lock. the other, an unlocked lock that is blue, that means unlock. The fact that he spent 20 minutes trying to get the alarm to shut off just proves his stupidity.

I work on cars for a living, and I have never had a problem with any remote or door lock, and I install remote door locks including actuators and everything all the time. I also take apart car interiors all the time to do installations. Lets see what have I taken apart in the last few months.... well for starters several mercedes, from SL500's to C classes, several porsche's, several bmw's, several ferrari's, a couple of bentleys, range rovers, you name it. In each case, I had to figure out how to take things apart. It's not all that hard, you just take the time to figure it out properly, and you don't end up breaking things...

After speaking with my mechanic again, who was the shop foreman at beverly hills ltd mercedes and at auto steigler for many years before opening his own shop, who has been working on benzes for over 40 years, said that 99% of the time it is the central pump that is the problem. there are no vacuum leaks, which I checked. I even had the door panel of and checked everything inside the door, including jumping the harness on the actuator direct to the pump. I think it is either the door actuator or the pump. THough My mechanic, who is right on his diagnostics 99% of the time, is going to put in a new pump and see what happens. he believes that the part of the pump that receives the signal from the passenger door is malfunctioning and he has seen this happen many many times.

I do appreciate people's responses with technical information on the subject. What I don't like is people posting with remarks as to the valet people. that is not the issue here, the door locks are the issue. If I wanted to ask about what I should do about the valet people, I would ask that in the open discussion as it is not a technical issue.

So back to the real matter, I have done the following:

1. Disconnect the remote door lock wires from the vacuum pump. to eliminate the alarm wiring to make sure it is not interfering with the stock system.
2. Reconnect the interuppted wire back together
3. Test voltage. found voltage at all 3 wires in the one plug, and no voltage at the 3 wires in the other plug.
4. Test wires for the pump power. Found correct readings on those wires.
5. reset pump by unplugging it.
6. Remove door panels and check readings on wires on each door. readings appear the same. for both doors.
7. Test voltage for lock/unlock.

By process of elimination, and after the diagnosis by my mechanic over the phone, I am led to believe there is a problem in the pump as my mechanic thinks, so I will replace the pump and see what happens. Worst case is I return the pump for a refund.

Regards,

Alon