Date registered: Feb 2009
Vehicle: S500 | 220.175 | 113.960
Location: Forest Hills, NY
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You know check for the leaks , how about some one activating the doors and you feeling the pump in the back to see if it does anything. I know that even if there is a leak somewhere that prevents doors from closing, the pump runs anyway for a little until it times out. THen it does not run until it resets (or car is restarted if I remember correctly)
The vacuum pressure system is very complicated and unreliable.
My car does something that we on the forums were unable to figure out.
All of my dooors work just fine, trunk also. However SOMETIMES and only SOMETIMES, and ONLY ON DRIVERS DOOR, if I use the soft close, the trunk pops open. Sometimes the trunk pops open even without using the door, sometimes while Im driving (at low speeds). Just BEfore the trunk pops open, I hear the car squeezing all doors at the same, then POP and I have to run and close it. Sometimes it happens many times a day, sometimes it does not occur for days!
What I did notice is that is does squeeze all doors before popping the trunk open. By squeeze I mean what happens when you activate the soft close. You activate by clicking it once slightly, then the door gets sucked in to closed position and squeezed in even further. ABout two seconds after that squeeze the door is "let go" by the pressure system to allow it rest on the latch itself. I believe the squeezing thing is the design of the car, however why the trunk pops I dont know!!! SO the system is very unpredictable.