[urq] central door locking motor on for a long time

[Johan H]

This is the close cycle. Does anyone have the diagnostics procedure for the 
pump?

The open cýcle seems to work fine.

Rgds,
Johan Hisinger
Helsinki, Finland


Hi,
>
>there is a weird problem on my -88 MB quattro. The central door locks are 
>working fine, the odd thing is that when I turn the key the "engine" or is 
>it a pump?? goes on in the back of the car ( on the left hand side, about

It's a vacuum pump.

>where the rear wheel is), but when the doors are locked, this pump 
>continues

Yep- located ( well in US cars anyway) in rear.

>to work for about a minute. The locks works at normal speed.
>
>Does anyone know where the fault lies? Or is this normal? (I haven't owned

NOT normal-
This the lock or unlock cycle ?

I can't recall but I think the 4kq or 5kq Bently has a diagnostic procedure.

>the car for that long, but I am pretty sure the pump would stop in a few 
>seconds after turning the key)
>

Should run 10sec after the locks hit open/close.