On my 2000 S500 If I unlock and continue holding the button no responce (all windows and sunroof do not open). All other features work ok, the car locks and unlock, front and rear lights flash, the summer opening and closing does not work.

1. All the fuses appear OK.
2. New batteries in remote.
3. when using the key, the windows will work on the summer opening but not the sunroof.
I have disconnected the battery, and reconnected.


Where do I go from here??? Is there a relay that could be the problem, located where?

Every time you have a power down....battery low or dis-connected, you wil need to re-sync the windows & sunroof.
Both are listed in your owners manual/

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