W202 1999, remote central locking issue

[Parisien]

Just bought this as per other posts, am back to collect it from my mates in Birmingham after 1 week.

It flashs when using fob but no reaction from locks. Used emergency key to unlock driver door, and fob key to start, thankfully it started.

Any reset or further solutions to this?

P

 

[LostKiwi]

The pump for these is in the boot. When unlocking listen for the pump to run. If it doesn't then you need to find why. Almost certainly either a knackered pump or a vacuum leak somewhere. Also check fuses (cheapest options first!)

 

[Parisien]

Not remote/fob related? Will check fuses, I saw a few in the glovebox when I bought it. Should there be flashing lights on the rear view mirror to acknowledge a signal recieved?


P

 

[LostKiwi]

Could possibly be flat batteries in the remote. Turn the camera on your phone on and point the remote at it. If you see a light when you press the unlock button then its working.

If you have two keys check them both.

 

[Parisien]

Only one key, I can see red flash when I press button for both lock/unlock plus when viewed on phone camera.

Its ok to rely on skeleton key plus fob as they are to start car etc?

P

 

[LostKiwi]

You could do that. Pumps for those are cheap on eBay if the pumps gone...

https://www.ebay.co.uk/sch/i.html?_...l1313&_nkw=w202+central+locking+pump&_sacat=0

 

[Parisien]

• Cheers again Lostkiwi, appreciate your help.

P

 

[Parisien]

Oh, if I swop out batteries, is there a syncing procedure of same to follow? I havent got a handbook to check for any specific details or info, which fuse covers central locking or just check for a blown on, under bonnet?

Cheers


P

 

[Parisien]

And is the saloon version different to estate or pre 97 different to post facelift 1999 part?

P

 

[LostKiwi]

Here's an owners manual (Its US but broadly the same).

https://www.dropbox.com/s/kvk8ddjvioqgktg/1999 C_Class Owner's_Manual.pdf?dl=0

Keys are easy to sync... its in the manual

 

[LostKiwi]

And is the saloon version different to estate or pre 97 different to post facelift 1999 part?

P

Get yours out and the part number will be on it. Get the same part number.

 

[Parisien]

Thank you Lostkiwi.....Ive messaged a few of them, will supply vin number for checking.

P

 

[Parisien]

Ok, 122 pages later.......am none the wiser re synching, it says you have to do it but not how to.

P

 

[LostKiwi]

Ok, 122 pages later.......am none the wiser re synching, it says you have to do it but not how to.

P

P102.....

 

[Parisien]

Oh, read that....was expecting a more elaborated synching procedure......!!!

P

 

[silestanix]

Just seen this mate, will try to remember to how I resynced the key and post it up

 

[Parisien]

Cheers again!

P

 

[Parisien]

Just noticed, that as soon as I've gone beyond a certain speed, all the locks are activated, so the central locking/vacuum pump mechanism must still work, ( just not from remote fob as above can see the red light flash when button pressed). The key works fine in ignition, does it still work if batteries low or drained completely? Is it just a synching issue or swop out batteries?

P

 

[Parisien]

Checked fuses, all intact, but no idea which fuse relates to remote/central locking if any, please see photo of my fuses box, which number(s) would it be, what may be missing? Anyone got a fuse box plan regarding which fuse does what?

Is there a relay I should check?

Thanks

P

 

[Parisien]

Anyways, was away for 10 days, before that I'd been doing a bit of tidying up, a few small fixes, had rear hatch/doors open for quite a number of hrs, went to start it today, fob key wouldnt turn in ignition, no lights either, assuming its just battery or is it dreaded EIS issue?

On back of central locking not working before this, is it just cumulative electrical failings?

Ok to take battery out to charge, it wont set off alarm etc?

Any help appreciated.

P