S 600 Sedan (140.057) V12-6.0L (120.982) (1996)
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Air Door Vacuum Solenoid Valve: Description and Operation
Vacuum Valve For Rear Tunnel Flap (Y67/1)
The vacuum valve for the rear tunnel flap controls the vacuum to the vacuum elements for the rear footwell flaps on the automatic A/C housing and
closes them when the rear air conditioning is switched on.
The vacuum valve for the rear tunnel flap is controlled by the rear air conditioning pushbutton control module. It is opened when power is present,
whereby vacuum is present at the vacuum elements for the rear footwell flaps.
