Blinking steering wheel button?

[mazingerv1]

Probably a silly question, when I turn on the headlight, the buttons including the tiptronic buttons, volume control buttons..etc on the steering wheel keep flashing at 2-4Hz.

is it normal? if not, what wrong with it?

thks !

[Loren]

Model year of your car please?

[mazingerv1]

it is a 2003 Cayenne S.

any relevant info is appreciated.

[wvicary]

That's interesting, have you tried turning the steering wheel light buttons on and off again? I've never heard of this fault before.

[mazingerv1]

I tried to turn it off. It does turn the light off, but sometimes it doesn't.

the tiptronic button sometimes responds (70%), but sometimes it doesn't (30%)

[bigbuzuki]

Does your speedo and tacho along with other dash panel background lighting also flicker?

[mazingerv1]

The speedo and tacho work fine

[Loren]

I think the question is about dash panel lights - dimming or flickering of other lights might indicate a problem with the headlight switch.

[bigbuzuki]

Yes, I am asking about whether the dash panel background lighting including the speedo and tachometer background lighting are also flickering.

[mazingerv1]

no flickering in dash panel background lighting

the radio/music control buttons on the driver airbag module including the tiptronic buttons flicker

it can be turned off by pressing the lighting button at the back side, but it does not always work.

[mazingerv1]

called Porsche Services, they said there may be a problem with the small circuit board sitting underneath the airbag.

since the car is working fine, I just leave it to the next services

[virkdoc]

When I adjust the dimming switch to increase or decrease brightness then all my lights flicker for sometime and then settle down to normal.

[wvicary]

When I adjust the dimming switch to increase or decrease brightness then all my lights flicker for sometime and then settle down to normal.

Sounds like more of a dirty dimmer switch then anything else.

[Salvador Marval]

Hello, did you managed to find the cause of this problem? My 2003 Cayenne Turbo is doing the same thing....all other interior lights, pcm and rocker switches work fine :/. Thank you!

[Pkcayenne]

Hi any resolution with this I have the same lights and buttons flashing now nothing no turn signal wipers or volume for radio