Question about 1992 Mercedes-Benz Mercedes Benz S Class
Your problem is more than likely a broken wire in
the wiring loom that goes to the driver's side door. Check the loom at the door
Also, try checking the pin switch (door switch) that is either out of adjustment or is faulty.
Another thing, it can also be the vacuum system that locks the trunk the same way the doors are locked. Maybe the vacuum device that locks the trunk is the problem.
Posted on Jul 30, 2009
There should be a clicking in the vac box.
if you do not hear it clicking then put the old box back on and listen for the clicking if no clicking you will need to check the fuses.check all fuses very carefuly.i have saved people lots of money on repare costs from other techs and turns out the fuse is blown.
changing out the box also is a problem.
even with an adapter .
dont use adapters .
go to ebay and find the right replacment part.
on mercedes if theres a bosch part out replace it with a bosch part.
dont listen to anyone about this i dont care who they are on this one.
these are setup to run one way only and if you go adding adapters your sure to make changes that are not pleasent or predictable.
your not talking about a sparkplug or something.if you leave the vac box unplugged the car wont even start.there are computers everywere and all work together. putting the hella is half the problem .
trusting someone about an adapter or just getting the right part is nothing to concider at all.
repairs are most of the time very simple to complete.
check ebay for the pumps
and take the hella back as its the wrong part.
also be very carefuly with the vac lines make sure none are or get cracked.
have someone use the key while you hold the box and listen for the vac box to run or click inside.
the relay in the vac box should click if indeed the motor is bad.
keep me posted
Posted on Jul 29, 2009
Try going to benzworld.org or peachparts.com and looking for a relay for it but I would guess corrosion on barrel fuses first as they are aluminum and the contacts are copper. Pay the 15 dollars now to save issues later. Also hot wire your old pump to see if putting power to it makes it turn on. If so youll be sure its a relay. I would try and find a pump that also needs no kits to work in place. Plenty of salvage yards have parts. Try buymbparts.com and talk to Rusty he will get ou what you need. Also check for power at the pump that will tell you if the system has power from the relay. Most issues have more to do with the actuators and pods that move the locks rather than the pumps.....usually. If your pump did fail get a direct replacement not a mod. I hope I have helped shed some light.
Posted on Jul 28, 2009
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Posted on Jan 02, 2017
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