Page 1 of 1

Where is the most likely place for a leak in central locking

Posted: Fri 14 Nov, 2014 8:57 am
by berntd
Hello

My 230SLK central locking pump runs for a very long time when I LOCK the car.
Unlock is normal.

Where is the most likely place I should look for leaks?

Regards
Bernt

Re: Where is the most likely place for a leak in central loc

Posted: Fri 14 Nov, 2014 9:52 am
by Tony From West Oz
The CL Actuators are the location of most CL vacuum locking leaks.
Rarely there are joiner of pipe issues.
Joiners and Tees are under floor mats, so fault finding is relatively easy.
I hope this helps,
Tony

Re: Where is the most likely place for a leak in central loc

Posted: Fri 14 Nov, 2014 2:10 pm
by berntd
Thanks for that.

Just got this car last night and very excited stil :dance:

Where is the CL pump located in the SLK230?

Actuators:
Left door right door and bootlid fuel flap. Or are there hidden others?

Also, where is the battery located in this vehicle?

Regards
Bernt

Re: Where is the most likely place for a leak in central loc

Posted: Fri 14 Nov, 2014 3:33 pm
by Tony From West Oz
Most likely next to the spare wheel in the boot.

To troubleshoot the CL System, get a couple of golf tees and disconnect the lock hoses (Yellow / red stripe?) at each Tee or joiner to isolate the actuators in turn. When you find the faulty one, get a replacement or repair it (search for actuator repair on this forum).

Happy hunting.
Tony

Re: Where is the most likely place for a leak in central loc

Posted: Fri 14 Nov, 2014 3:54 pm
by berntd
It must be there somewhere but in the 'usual' place in the boot like on the sedan, I found the roof pump instead of the CL pump.
Will look into it tomorrow. Tonight, I 'll just sit in it for a bit :love10:

Re: Where is the most likely place for a leak in central loc

Posted: Fri 14 Nov, 2014 9:11 pm
by Djenka018
The actuator that is slowest to respond could be leaking.

I think that all the cars post mid 90's have 2 way CL (vac vs. pressure).

There could be an issue with a sensor switch too.

Re: Where is the most likely place for a leak in central loc

Posted: Sat 15 Nov, 2014 10:11 am
by berntd
Ok. I found it.
Driver side door actuator.

It can't disassemble but I managed to repair it anyway.

It has steel balls pressed into unused passages and the plastic around one had split.

Repaired with tiny blob of silicone. 15 year warranty. :whistle:
I still have to fiddle it all back into the door though...

Regards Bernt