My central lock is not working anymore. The infrared still activates the alarm, but not the locks. Using the key does open only that one door and using the interior button has no effect.
I checked all fuses and even swapped them around with others or new ones. I could not find a bad fuse.
How do I troubleshoot this?
Please help.
Thanks,
Sab.

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