central locking fault 1998 c180

[vinnie45]

hi i have a 1998 c180 espirit,i bought this 2 weeks ago with central locking fault,can anyone help me,central locking doesnt work off the remote,when i press lock or unlock the side repeaters flash as if alarming or un arming,the doors do not lock or unlock nor does the boot flip open,i have to use the manual key,also the boot flip switch doesnt work nor do the headrests on the button,nor does the central locking on the switch in side the car,can anyone help me as this is the first time i have owned a mercedes,thanks

 

[bigasotonuk]

Hi,
All the functions you have mentioned require air, the air pump is located in the boot just in front of the fuel filler, behind the boot trim.
Switch the ignition on and listen for it if the system has a leak it will shut down after 10-15 seconds or so. If you can,t hear it running theres a good chance its U/S but confirm cable and plug integrity before condeming it.
The pumps have to be coded to the car so even a new one has to be programmed to your specific car before fitting.
Not sure whether they can be recoded once coded so a secondhand one may not be much use either.
I suspected mine at one time and was quoted £345 plus vat plus programming if remember rightly.

 

[vinnie45]

hi thanks for the reply,have checked it,looks like someone has had a look before as all the inside trim has been moved and not put back properly,the only sound i get is one click sound when first pressing the switch for locking other than that its dead,i can get a new one from euro car parts for £80.00,will check with my local mercedes dealer if it needs programmeing,cheers

 

[vinnie45]

spoken to my local mercedes dealer,they say if i buy a new pump they think it might not come with the software fitted to code for the car,but they did say that they are 90% sure that if i buy a good second hand one that it is already got the software fitted and as it is not part of the security system as its only a compressor pump then it should work ok ,there mechanic says they not allowed to do this as obviously they are main agents and only alowed to fit new parts,can anyone else confirm this as i dont want to buy a secondhand one and have to code it,thanks

 

[Autofix]

Yes, used are plug and play. I have changed many for test purposes.

 

[Cosworth]

There are two diiferent types of central locking pumps. Take a picture of your pump and post. One of them is expensive and the other is cheaper.

 

[vinnie45]

hi thanks for your reply,just 1 more question,the remote is i believe is setteing and unsetting the alarm and the windows are opening and shutting as they should,could it be the alarm causing the problem,

 

[Cosworth]

hi thanks for your reply,just 1 more question,the remote is i believe is setteing and unsetting the alarm and the windows are opening and shutting as they should,could it be the alarm causing the problem,

The central locking pump is all interlinked with windows and alarm.
Only if you have the late type pump. That why if you post a picture I can see which one you have.

 

[vinnie45]

hi will put picture on later,my kids have borrowed my canera without asking and left it at there mates,flipping teenagers,spoken to my mercedes agent,parts depot,they reckon its got wrong pump fitted,the one thats on is a 202 800 1148:the one that should be on this car is a 210 800 2748,does that mean anything to any body.ive phoned round loads of breakers but none have got any with that model number,they all have the one thats already on the car,cheers,