D. Vacuum Circuit 3, Footwell Flaps (39)

D. Checking vacuum circuit 3, vacuum element for footwell flaps (39) for leaks





1 Press function selection button "Upper/Lower Vents" on the control unit and engage temperature selector wheel in position "MAX".

2 Evacuate with the tester (approx. 400 mbar) and read off the pressure gauge.




3 If the indication on the pressure gauge changes, directly check the vacuum element (39), renew if required or check vacuum line red/yellow, renew if required.

Note: Up to 08/86, two vacuum elements for footwell flaps have been installed.