SL 350 Hydraulic roof pump

[AlanWilliams]

As well documented in and around the Forum, I have had the common problem of intermitent central locking not working and the boot soft lock not locking down at all. By searching thro the Forums I have been able to identify it was indeed the PSE pump, no surprise it was soden wet! As suggested in other threads I took it out and dried it off and left it out the car for a few days.
Thereafter I connected it back up and to my joy the boot softs locks down when closed, all sorted great, almost!!

When I tried to put the roof down the initial drop of the windows happens and then i get an instrument panel warning "Visit Workshop" and the windows raise again into their seals.
My guess is the roof hydraulic pump, but I am wondering if there is a way I can isolate and identify if the pump is the problem?
Or is it a visit to MB garage and stump up the £80 to have it diagnosed?
Thx
Alan

 

[lxi]

indeed the PSE pump, no surprise it was soden wet! As suggested in other threads I took it out and dried it off and left it out the car for a few days.

When I tried to put the roof down the initial drop of the windows happens and then i get an instrument panel warning "Visit Workshop" and the windows raise again into their seals.

Alan

seems a bit too big a coincidence that this happened just after you had the PSE out. To get the PSE out does mean a bit of juggling with the roof pump - worthwhile checking all the electrical connections are secure and that there are no kinks in any of the flexible lines

 

[BlackC55]

I would have thought there is moisture inside the pump now also causing the roof issue. Its it not uncommon for the water leaks to damage the PSE and roof pump.

 

[AlanWilliams]

Fair comments guys, so revisited the boot. I had noticed water marks and some rusting on the pump casing at the time.
There are 2 elec connectors which I removed dried out and applied some WD40, and to my extreme relief the roof now works :bannana:

Needless to say I now have the pump, PSE and cables protected by cling film and polythene, plan to seal the rear window.

Many thanks for taking tIme to reply
Alan