Tthanks again for all your help.
OK, I got the rebuild pump back and it seems to work well.
Central lock and lumbar seat control works perfect and the trunk handle comes in and out. The car runs again...
BUT the trunk still only closes when I slam it hard. The trunk close assist feature does not seem to work.
Which pump handles that? All my doors work perfect.
When I close the trunk lock manually (to trick the trunk to think it's closed), the handle retracts and the latch on the lid pulls back just about 2mm and then releases that same amount again.
Isn't that latch supposed to come out quite a bit to slowly pull the trunk lid down?
How can I troubleshoot this last issue?
regards,
Sab.

__________________
regards,
Sab.
'07 ML320 CDI (398 ft lbs / 1400 RPM)
'02CL 500
'91 928 GT Supercharged