1980 Mercedes-Benz SL 450 SLC 4.5 litres from Australia and New Zealand
Vacuum system will not operate the doors or seats, could anyone supply a drawing of the valve direction of the valves located behind the battery.
Would you buy another car from this manufacturer? Don't Know
Review Date: 16th June, 2003
21st Mar 2010, 19:51
Had the same problem you will have to put actuators in your doors, relatively inexpensive. The vacuum system has a leak and the pressure is not sufficient to lock the doors. It will take 25lb. actuators to operate your door locks; anything less will be insufficient! Good Luck!