new heater matrix /no central locking is their a connection

[kes 300]

is it possible for a novice to check vacum system / connections behind dash with out a total strip down (if it is a straight forward job i'd rather do it my self than hassle the garage )

 

[Malcolm Brown]

Not sure if relevant to your problem, but there are a few threads referring to central locking that may be worth searching through - example http://forums.mercedesclub.org.uk/cgi-bin/ikonboard/topic.cgi?forum=2&topic=320

Good luck