W168 central locking problem

noppy

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well last sunday i think the central locking stopped working.

The alarm gets activated when the lock button is pressed but the doors dont lock.

i can only manually lock it

the only thing iv done is change the bulb on the interior light. Do you think this could have shorted it?

All other electronics work ie wing mirrors wipers windows

What could it be ... Please help


Thanks Gavan
 
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andy@pcd-ltd

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To me it sounds like the central locking pump has gone down on it. A quick check on the star machine should be able to solve this
 
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noppy

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cheers just found it and the motor moves freely but is rusted and part of the electric board is mouldy and black so i think it may need replacing :p

thanks again
 
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andy@pcd-ltd

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Doesnt sound good.

Trying to remember off the top of my head if you replace the pump im not sure if it needs coding at all
 
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noppy

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ummm well i disconnected it and reconnected it today a number of times and it made no difference.

i and my brother took the pump apart and that moved freely

what do u mean by coding ?

like sync it with the alarm system and car ?

thanks Gav
 
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andy@pcd-ltd

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Some of the pumps need to be coded to the british market etc as they come in a standard state so they can be used all over the world if that makes sense.

Best thing to do is get it stuck on a star machine and it can be tested via actuations on the machine
 
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noppy

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there a few small problems with that, im a student and have no money.
Its also my Gf's car.
Her parents have paid for the insurance £1000+
her parents paid for a very big service a couple months ago £1000+
and they said that they aint paying anymore and we can just manually lock it.

Im happy to pay £30 on ebay for a used pump but just putting on the machine will be double that.

oh when we had the pump out but plugged in it made a noise when i tried to lock/open it but never did anything

what will happen if i install a new(used) one? As i think its a good idea even if it isnt that because the pump is rusty and the circuit board is mouldy and rusty

Gavan
 
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andy@pcd-ltd

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Personally i would get it stuck on a star machine and go from there as you dont want to put a pump on it and it not cure it.

What area are you in
 
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noppy

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Hi,

il be back at uni tomo which is Bangor, Gwynedd

i will probably try to find a local garage that has the machine to test it but not the mercedes prices
 
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andy@pcd-ltd

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Yeah thats the best thing to do

Shame your not closer as i have a star machine and could of looked at it
 
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noppy

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ummmm for some reason one key now activates the alarm and one doesnt they both have brand new batteries and both show a light when the buttons are pressed any ideas what it is?

I should get the new pump in the post tomo will this fix the problem?
 
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noppy

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new pump works a treat thanks again Gav
 
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noppy

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this was £32 for the part and i fitted it dunno how much the pumps cost new from mercedes probably a fortune
 


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