W220 S500L 2000 UK Air con rear knob!

[rossy]

Rear air con control knob or should I say cover for knob on right hand side that controls up down + - is missing...
Can these be got i.e. the black cover with + and - on or is it hole thing?
If so cash waiting.
Thanks

 

[rossy]

Someone must have a faulty unit to take this black cover off, can understand not wanting to remove from a working unit.
Its for the rear but looks like the one up front is the same.
Anybody?
Breakers are a no go...."will not split"