Rear lid sensor problem?

[mazingerv1]

My 03 Cayenne S : rear lid is closed as normal, but after a while, the car shows it is not closed and give a warning at the panel.

what could be the problem? the sensor? where is the senor?

what needs to be done to fix it?

any advice or experience sharing is appreciated

Thanks a million!

[Loren]

A Porsche PST2 tester or PIWIS tester will likely give you a fault code to identify the problem.

Could be a number of switches or the rear convenience control box

[EleCTriCT]

you can also verify the top glass portion is closed properly... ive seen this a few times where the glass portion has been "partially" latched.

[mazingerv1]

rear convenience control box ? where is it?

Here is more details of the symptoms:

when it is closed (I'm sure it is closed properly), no warning.

when I start to drive and pass some bumpy roads, it beeps and gives the warning

when I stop and re-accelerate > 3km/h, it beeps again

any advice is appreciated !

[RFM]

Older Cayenne's have sometimes suffered from water infiltration into the button of the glass part ( where the wiper is fitted ), a new button is than inevitably. The first thing to do is always error code checking.

[mazingerv1]

Thanks !

Is the sensor located at the button (upper part) or the lock (lower part) of the window lid?

[RFM]

The button.

[bigbuzuki]

rear convenience control box ? where is it?

Here is more details of the symptoms:

when it is closed (I'm sure it is closed properly), no warning.

when I start to drive and pass some bumpy roads, it beeps and gives the warning

when I stop and re-accelerate > 3km/h, it beeps again

any advice is appreciated !

Just to clarify,

1. When you say lid, are you referring to the rear glass lid or the whole rear tailgate door?

2. When the beeps sound, is the glass lid still fully closed?

A common fault was the glass lid would unlatch by itself after going over bumps.