My 2004 CTT does some goofy things.

[Enzo955]

So, I just received my CTT and as I love the car, it has some faults and I'm hoping some of you guys could help.

1. I was driving the other day, pretty normally and boom cars shuts off. No light, power or anything. I pull over, take out the key and boom fires up and I go on about my way. What could be causing this? Battery? Fuel Pump? Pretty odd, and I'm glad my steering wheel doesn't lock up! Also, the ABS light normally comes on when this happens. I have had the truck only about 3 weeks and it's done it twice.

2. My key usually never works, it can't unlock/lock the car and won't open the trunk usually ever. It's a 2 button key and I replaced the batteries multiple times and nothing. I was quoted at $400 for a new key programmed at PGH Porsche. Is this high?

3. My radio goes up and down in volume randomly.. really bothers me sometimes, any remedies?

4. I get a 'workshop code' for the air suspension, but the suspension works fine. Should I be looking out for anything?

I'm asking all these questions on here because the guys down at my P dealer don't seem to know a whole lot, even in the service department.

Thanks in advance, any answers would be appreciated.

Edited May 9, 2014 by Enzo955

[Pkscheldt]

Well for number 1 I can tell you that is exactly what was happening before: http://www.renntech.org/forums/topic/42712-2003-cayenne-turbo-will-not-start/

[Enzo955]

So you replaced the steering rack and it doesn't stop/stall on you? I have that same key problem, and normally if I put the key in, and turn it to the left first then to the right to start and starts up fine.

[Pkscheldt]

Correct. There is a micro switch in the rack that can wear out. In mine it slowly stopped working. Sometimes I would try to start the car and it would do nothing, then I would pull the key and re-insert and it would be fine. This happened intermittently over about a year and then over a three month period a couple of times while driving the car would shut down period. I would then stop pull the key, re-insert and it would be fine. Then one day it just wouldn't start and when I say start I mean nothing worked except the radio. The biggest problem with this was diagnosing it because it never threw a code, then when it completely failed you couldn't even use the durametric code tool because the micro switch is so early in the start progression of the cayenne's system that the DME wasn't even energized at all.

[Enzo955]

So I could get away with just replacing the micro switch? Or the whole rack? Deff appreciate the help.

[Pkscheldt]

Unfortunately not, it is embedded in the rack. Not a cheap fix actually.

Also, fairly certain the "workshop" code your getting for the suspension is because you need to rebuild the compressor. Very common, google it and you'll find kits. Yours will be the same as the one used for the toureag.

[Enzo955]

Okay, that's a bit dismal, I'll see how often this is happening and how serious the problem is, as my steering wheel does not lock I am not terribly afraid of it. And I found a kit for $160, does that sounds right? Doesn't seem to bad.

[bigbuzuki]

Try this for compressor fix.

http://www.ebay.com.au/itm/Porsche-Cayenne-2002-2010-WABCO-AIR-SUSPENSION-COMPRESSOR-PISTON-RING-REPAIR-FIX-/321370811251?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Model%3ACayenne&hash=item4ad3316b73&_uhb=1

[Enzo955]

Just a update, just but in a new battery and it is a ton better. The A/C comes on right away(used to wait a couple mins) car fires up much better and I no longer have to turn key to the left before starting. Also the remote works perfectly(no need for a new key!) Deff helped me out

Edited May 14, 2014 by Enzo955