central locking vacuum pump

[stillee]

hello i just recently imported a 1996 S500 with only 4500km on meter from belgium to sweden.. a thing related to AC was changed (i think it was indoor temp sensor or something, they said it costed ~200 euro) one thing they didnt fix was central locking, i have removed the back seat and investigated the pump and from what i can see (according to earlier postings) it is the newer pump type. it doesnt make a single sound when i start the car so i assume it just has to be replaced.. is there some way i can make suer this is the case? i think i found the fuse for it (under hood, marked as electric air pump) and changing it did nothing. there are many cables and hoses connected to it.. are there any special ones i can check current on or something to really make sure the pump has gone bad?

[guydewdney]

i thought the fuse was in the boot / trunk...

[stillee]

could be, im not sure.. the fuse in trunk i understood was for the door closing system pump, but im not sure since the text for the fuses in trunk are in german and my manual is in french and im not too good in either of the two languages :)

[guydewdney]

boot fuses:-
10 rear air con
2) infra red remote control (anti theft) rear seat heating
3) cent lock sys (closing aid, cigarette lighter, rear)
4) parking aid
5) window
6) window lift
7( fridge (!)
8 vacent
9)closing aid system
10 telephone
11) window lift, luggage compartment light, central locking system, celing / reading light, rear
12 load current rear seat heating
13 fuel pump
14 sun roof
15 infra red remote control (anti theft locking system, rear head restraints)
16 tuner / amp etc
17 rear window heater

[stillee]

thanks.
the 11) fuse was bad. only now it goes out every time i try to activate the central locking system by the remote door unlock. i suppose the pump has gone bad (perhaps by a leakage the pump didnt manage to compensate for?) a new pump has a 1000 euro list price a mb resaler here in sweden informed me, can this really be correct?
some suggestions on what my next step in trying to solve this problem should be?

[stillee]

i got it working!
removed the pump, opened up the plastic bottom, removed the loose parts (pump, circuit board) and sprayed them all with some leading spray. all pump dependent mechanisms are now working perfectly again.

[AL-Sayegh]

Sound Good that your Center Lock Pump is working Now. My Suggestion if it get you in treble again you can change it to an electrical system because the Air Pressure Pump sound to get leak if used so many time in the same time , Because it require a Built up Pressure and that take time.
Any way keep us in Touch [:D]

[lcmlee]

stillee - 5/24/2004 2:50 PM

i got it working!
removed the pump, opened up the plastic bottom, removed the loose parts (pump, circuit board) and sprayed them all with some leading spray. all pump dependent mechanisms are now working perfectly again.

Ok. Can you eloborate on the "...sprayed them all with some leading spray." What was the "leading spray" you used?

[guydewdney]

probably lost in translation - either contact cleaner or WD40 (lubeing) spray?

Guy

[stillee]

yes, contact cleaner would accurately describe what i meant :)