My cayenne 2011 wont start, both keys are not recognised also

[MIA]

Dears,

I desperately needs you help. My car is not working since 2 days, i tried to recharge the battery but it the battery seems just fine cause all the lights are on. Both keys are not working so i had to open the car by the key. Then the alarm is on and i tried to start the ignition but it wont work. Is it key or battery issue?

[wizard]

Marhaba.

How old is your battery, and which brand is it?

When you say that the car won't start, is there no response from the starter at all, or is the response very weak?

[binger]

Dears,

I desperately needs you help. My car is not working since 2 days, i tried to recharge the battery but it the battery seems just fine cause all the lights are on. Both keys are not working so i had to open the car by the key. Then the alarm is on and i tried to start the ignition but it wont work. Is it key or battery issue?

 

 Mia,

 

We need some more info. Did the car battery die? You claim both keys are not recognized. Do you have this message on the cluster? If this is the case both keys will need to be reprogrammed in to the immobilizer system by a PIWIS tool. 

[dynamic101]

Have you checked all fuses?

 

When I replaced a fuse for a light, I also checked other fuses in the fuse box (the Left & Right of the dashboard. Don't be confused with locations. There are two fuse boxes)  

http://www.porscheownersmanuals.com/2011-cayenne/4/287

http://www.porscheownersmanuals.com/2011-cayenne/4/288

http://www.porscheownersmanuals.com/2011-cayenne/4/289

 

By accident, I placed a fuse in a wrong spot. About 30 minutes later (after I finished some other stuff), I just tried to start my Cayenne. ....I experienced the similar symptom that my cayenne didn't start at all. I was panic but I tracked down what I did. 

 

I carefully checked one by one and found that one fuse was misplaced. After I put it back to the right spot, all systems were back to normal.

 

What I learned is that a good vehicle can be paralyzed by just one tiny fuse since it's affecting the entire electronic system of the vehicle (=control unit). 

 

Check all fuses carefully, one by one. Who knows? One fuse replacement can resolve the big issue. 

 

Hopefully all go well. 

Edited December 23, 2015 by dynamic101