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Car still doesn’t start- dried out and new battery

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2006 V6 Cayenne 100k mi.

My car died at the train station but my son was able to jump start me. I drove the car home and it hasn’t started since. That was May. I did a lot of reading on the forum and I pulled up the drivers carpet and the padding was wet, so I unwrapped the wire bundle, opened all the doors and windows, disconnected the battery, hung the carpet from the steering wheel and let Mother Nature dry the car out.

The ends of the spliced wires were heavily corroded so I cut them back a little and rejoined them. After doing the wires my brake proportioning and lock fault messages disappeared. The lights, radio, a/c all work, but I hear nothing else- silence from my dead car. I checked all the fuses- right and left sides, and under the hood. The ground connection is fine. The 5A fuse under the driver seat is fine as well.


The car didn’t start so I hooked up the Durametric:

Vehicle Electrical System- 907 fault.

Gateway- 532, 1314, 1321


So, I pulled the battery and the parts store exchanged it because it had a dead cell. It was getting dark out, and dinner was getting cold, but I put the battery in place and connected the cables. Lights, radio, a/c all work, but car still doesn’t start. No bad starter sounds, nothing. I can shift into neutral like normal.


I cleaned up the cowl area and the drains are now clearer, checked my A/C drain and it’s clear. The passenger front sunroof drain has some water in it and I cannot pass a line from my weed trimmer/whacked all the way through- I took off the wheel and removed the wheel liner for full access. I tried sucking out any blockage with my shop vac to no avail.

2006 V6 Cayenne

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Just pull it out, then open it with a screw driver and then press it back in and watch if it clicks then you turn the ignition on. Or replace it with the 433 relay from the starter.


In nearly got the same problem but my relay under the driver seat is fine. 

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Then it should be fine.

Under the passenger carpet is 1 spliced cable you checked this too?

In the fuse box under the hood are also spliced wires under the fuse/relay tray.

I hope you checked all the fuses driver und passenger side dash, under the seat and under the hood.

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  • 2 weeks later...
On 9/1/2018 at 8:23 PM, BobbySpeed said:

Checked all the fuses, but will look at thise other spliced wires.

The strands of the black wires in the picture when cut back are very grey.



Keep cutting back until you get to shiny copper color. The gray are corroded wires - caused by water being drawn up into the wire by capillary action.

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  • 1 month later...

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