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Hello Forums,

I have 2 issues.

1. One of my doors stopped locking. You can open the door from the outside anytime, but you can't open it from the inside. Does anyone know what I might need to fix here without having to take it into a dealer? Before it completely died, locking causes the door lock to 'Whir".

2. My "beep on lock" stopped working. When I lock the car, the horns don't beep any more. The settings are set to on. Blown fuse? Dead horns? Regular horns work fine when pushed on the wheel.

Thanks for your help!

.C

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Year of your Cayenne? How old is your vehicle battery? How much voltage is your battery putting out? Old/weak batteries can generate many problems, including settings losing their memory.

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The door lock motor is part of the latch assembly so you'll have to replace it as a unit. The inner door handle operates the latch unit via a cable so the door card will need to be removed for inspection.

The alarm horn is located by the brake master cylinder and they do fail so start your testing there.

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  • 2 months later...

I have the similar problem. Except my is getting worst. The passenger would require a little push to be able to get open from the outside. The driver side door won't fully close from time to time. The alarm is not sounding as well. Glad to stumble upon this thread.

So might have to remove the door panel to have a look at the mechanism. Got any idea of what part that causing this problem? Replacement parts number?

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