Question about 2007 Mercedes-Benz C230 Sedan
Hi and welcome to FixYa,
Almost always, your described problem indicates that at least one of the door switches is faulty. These switches are normally embedded on an area that is pressed on by the door. They would normally be covered by rubber inserts for weather protection. In some instances, water enter, causes corrosion that would simulate the switch to be engaged even when the door is closed hence the message 'Door Open'. Often doors involved would be the driver side or the trunk/boot. Check, clean or replace as may be required.
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Posted on Feb 22, 2009
One of your door jamb switches is broken. Look on the inside of each door jamb, you'll see either a plastic button that pushes in, or it may be covered by a rubber boot. Press each of them, and one of them may feel funny. If there's a rubber boot, pull firmly to remove it, then there should be a screw holding in the switch -- remove that and slide the switch out and unplug it. Should be very cheap (<$20) to get a new one from the dealer, and takes maybe 5-10 minutes to install.
Posted on Feb 22, 2009
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Posted on Jan 02, 2017
Tips for a great answer:
Passenger Front Door Module (PDM)
LH Rear Door Module (LRDM)
RH Rear Door Module (RRDM)
Driver Door Switch Assembly (DDSA)
RH Front Power Window Switch
LH Rear Power Window Switch
RH Rear Power Window Switch
LH Front Power Window Motor
RH Front Power Window Motor
LH Rear Power Window Motor
RH Rear Power Window Motor
Class 2 serial data circuit
Power door serial data circuit
PWR WDO 30 Amp Circuit Breaker
DRVMDL Fuse (10 amp)
Driver Door Switch Assembly and Driver Door Module logic, Driver Door Module internal driver operation
PASS MDL Fuse (10 amp)
Front Passenger Door Module logic and internal driver operation
RRDR MDL Fuse (10 amp)
Left Rear Door Module and Right Rear Door Module logic and internal driver operation
Do you know about computer controlled power windows ?
Power Windows Operation
The vehicle is equipped with power windows controlled by the door modules. Each passenger door window can be operated, either from a switch built into the driver door switch assembly (DDSA), or from a switch mounted locally to its associated door. The driver door window can be operated only from the driver door window switch built into the DDSA.
When a window is operated from the DDSA, the DDSA interprets the window switch signal as a specific window switch request and sends the information to the driver door module (DDM) via the power door serial data circuit. The DDM examines the request and checks to see if it has received any class 2 serial data messages from any of the other vehicle modules (i.e. ignition switch position) prohibiting the movement of the window. If the window being operated is the driver door window, and if no prohibitive class 2 messages have been received, the DDM then applies voltage and ground to the driver door window motor to move the window glass as requested. If the window being operated is a passenger door window, and no prohibitive class 2 messages have been received, the DDM sends the request, via the power door serial data circuit, to the appropriate passenger door module. The passenger door module then applies voltage and ground to the passenger door window motor to move the window glass as requested.
When a passenger door window is operated from the power window switch mounted locally to its associated door, the passenger door module first checks to see if the DDM has received any prohibitive class 2 serial data messages. If there are no prohibitive messages, the passenger door module powers the associated passenger door window motor.
Both front door windows have the express down feature. This allows the front door windows to be fully opened by momentarily pulling the appropriate window switch lever to the second detente and then releasing.
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