Porsche Cayenne front door lock assembly

[yukonriver roy]

I have a 2008 Porsche Cayenne S with door alarm issues. The door(s) do not recognize whether they are open or closed. This image on the instrument panel shows a passenger front door ajar icon and the beeping alarm is enough to made a sane man or woman drive off a bridge. On the driver side over the past year I have noticed the door open or key in ignition alarm come on or not, the red door lamp not light, and the interior lights not come on when opening the door. On the passenger side i have experienced the alarm icon and alarm on continuously while driving, the interior lamps staying on after the doors are closed, the signal not sounding when locking the vehicle with the remote, or the security alarm suddenly going off a short time after locking, and probably a few other annoying items. I have applied the quick fix canned air and WD-40 to the passenger door a few times and it got me through the winter, but not any longer.

So I was about to tear the passenger door apart and try and repair the latch when I started thinking it might be the driver door, which obviously has experienced a zillion more opening and closing than the passenger door. My question is, is there a separate door ajar alarm icon showing on the dash for each door, or only one showing the passenger door ajar for all door open errors? I l have only seen the Passenger door icon warning.

When I leave the key in and open the drier door there is no longer an alarm, and the red door safety light in not lit. When I manually move the door catch one notch up, the alarm sounds and the light comes on. When I move it up another notch to full lock the alarm quits and the light goes out.

I apologize in advance the length of this post but it seems to be a common issue.

 

Regards,

Yukonriver Roy

[snowdrifter]

Hi Roy,

 

I have a similar issue and the problem is that the driver's door latch is not sending the signal to indicate 'I'm open!'. The interior motion sensor is still activated and starts the alarm after about a minute if you move into the car or self-locks again automatically because it believes that no door has opened. If you unlock the car with the remote and open the passenger (or any other door) the alarm will not sound. The local dealership offered to replace the doorlatch switch for me for $740 – I abstained. A special tool is required to dismantle the door lock mechanism.

[yukonriver roy]

Thank you Snowdriter for your response. The electronics of these cars today is mind boggling  and the interconnected dependence is tough to figure out. I have been focusing on the passenger latch but it makes more sense that the drivers door which under goes probably 95% more opening than the passenger door is the place to start. Thanks again