2005 Cayenne Door/Dome Light

[ALAllen]

Hi there, my Cayenne is telling me my driver's side door is open when it is not. This is causing the dome light to stay on. Not sure what the issue is and if can be fixed easily. Any info given is greatly appreciated, thanks!

[GSpence2]

Broken latch/pin switch 

I would start there 

[KERNELCLIFF]

There is a microswitch in the door latch assembly that has probably failed. 

 

The bad news:

-Porsche does not offer this part separately from the $500 actuator.

-The Chinese microswitches on Ebay and Amazon, while inexpensive, may or may not be a perfect fit and take a while to arrive

-The process of accessing the actuator is fairly involved.  The process of realigning the door frame after reassembly is particularly fiddly IMO.  The whole procedure is documented elsewhere on this site.  Be aware that there are model year differences in how the lock cylinder is removed that are not well documented!

 

The good news:

-There are complete aftermarket actuator assemblies that are a perfect fit for $40-60 on Ebay- I bought one and just swapped out the switch on my existing actuator and tossed the Ebay part in my spares bin.

-Some people claim that you can clean the switch but mine was so deteriorated it wasn't an option, and given the labor involved I would replace the part(s).

 

The job took me about 5 hours including puzzling over the lock cylinder and adjusting the door frame..  Given that the job may run you about $1,000 in parts and labor at the dealership,  $60 and an afternoon of aggravation doesn't seem like a bad deal.