CL-Class (W215) 2000-2006: CL 500, CL 600

Passenger door Lock

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Old 10-06-2011, 08:04 AM
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2004 CL500
Passenger door Lock

maybe you guys can help me here. When I lock the car with the key fob or on the interior dash the PASSENGER door lock knob does not go down.

Same happens when the Auto Lock function kicks in at 15mph....the Drivers door knob goes down....but the PASSENGER knob stays up.

Any ideas??
Old 10-06-2011, 02:53 PM
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2003 CL55 AMG
The door locks are operated by vacuum. Your issue is somewhere in the vacuum system. Lines, pump, door lock module.
Old 10-06-2011, 04:05 PM
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Awiner...thanks. I kinda figured that.....same vacuum/pump that raised the trunk probably?
Old 10-06-2011, 08:49 PM
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Originally Posted by John CL500
Awiner...thanks. I kinda figured that.....same vacuum/pump that raised the trunk probably?
The Pneumatic pump is located in the trunk. Driver side behind the paneling.

The pump has multiple circuits. One circuit for the truck, one for each door soft close, etc.

One way to know for sure is to have someone run a PSE test on DAS. It will report if any of the pumps circuits are in operative or not working correctly.

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