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My Cayenne S 2008 won't start. I turn the ignition key and all I see is the Porsche (red) logo turn on and the mileage counter light turn on. Steering is locked, the head unit works and I can hear audio. Normally I would hear a click and then all the indicator lights would on and I would hear the soft beeps but now I don't hear anything. There is no steering / ignition faulty codes showing up on the dashboard. 

 

Has anyone experienced this? Appreciate the help.

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My Cayenne S 2008 won't start. I turn the ignition key and all I see is the Porsche (red) logo turn on and the mileage counter light turn on. Steering is locked, the head unit works and I can hear audio. Normally I would hear a click and then all the indicator lights would on at ignition 2 position and I would hear the soft beeps but now I don't hear anything. There is no steering / ignition faulty codes showing up on the dashboard. 
 
Has anyone experienced this? Appreciate the help.




Sent from my PH-1 using Tapatalk

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Okay , I have an update. Looked for all possible faults and finally after we shorted fuse 26 we got the ignition to come on. The fault showed brake prop valve. 

 

Got under the seat , disconnected the battery and then re connected and i turned the ignition on.  Steering lock released and the car started. Next I'm gonna investigate the harness under the driver deal pedal. Clear out whatever issue and see if this would happen to me again.

 

Will keep you posted. 

 

Here is a link to what I plan to do:

 

 

RENNLIST.COM

Cayenne 955-957 2003-2010 - How To: Ignition Lock, Brake Proportioning, ABS light, PSM, Traction, Brake Flashing - Are you getting all...

 

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  • 5 weeks later...

Update: Had checked the wiring harness and everything seemed fine, so I let it run for a while to see if the problem came back. Sure enough it happened again. Only thing i could think of was relay 433 , swapped both out to be sure. Will update if it happens again.

Also the parking sensors were going wild whenever i stopped at the red light. Noticed my license plate holder had a crack , replaced with a new one.. it's gone!



Sent from my Mi A2 using Tapatalk

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  • 2 months later...
On 5/31/2019 at 3:44 AM, PhoneyStark said:

Okay , I have an update. Looked for all possible faults and finally after we shorted fuse 26 we got the ignition to come on. The fault showed brake prop valve. 

 

Got under the seat , disconnected the battery and then re connected and i turned the ignition on.  Steering lock released and the car started. Next I'm gonna investigate the harness under the driver deal pedal. Clear out whatever issue and see if this would happen to me again.

 

Will keep you posted. 

 

Here is a link to what I plan to do:

 

 

RENNLIST.COM

Cayenne 955-957 2003-2010 - How To: Ignition Lock, Brake Proportioning, ABS light, PSM, Traction, Brake Flashing - Are you getting all...

What is fuse 26 having same issue but in my 2005 Cayenne S and I will try to switch out relays 

 

 

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  • 9 months later...

Richard and Phoney, I have an update on my 06 CTTS! I didn't have any luck with the side dash fuses so started pulling fuses in the relay box between the firewall and brake fluid resv. Not sure which fuse woke it up but simply pulling and pushing fuses back in woke it up! I do have a warning light on the dash for the suspension that was not there before, so I will try to clear the code in Durametric and diagnose for other faults. Will keep you posted.

   Could it be coincidental that my "service now" msg is also on the instrument panel?

 

second update: warning light for the suspension went off as soon as I drove it around the block.

 

   Tim in Ft Worth

Edited by Ignited
warning light went off
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