Warranty issues - Gearbox/Diff and PCM

[Lawman]

Recently (3 months ago) purchased an 02 996 Carrera 4 (facelift)from a good independant dealer and also got the all important Porsche warranty. Cars done 24k miles and had 3 owners. Two issues have arisen and as a newcomer I'd be grateful for members thoughts.
First, I have noticed a whine from the rear (diff/gearbox?) in the last couple of weeks. Its particularly pronounced in town ie at low speeds, in 1st or 2nd and where the PSE has not kicked in. Its a real irritation now and passengers comment on it too! The car has occasionally jumped out of 2nd gear too, which I have read can be a telltale sign of potential problems.
The second issue is the PCM system (Bose upgrade). The Sat Nav still operates but with no volume. The Radio is "frozen" and none of the adjuting buttons operate. Again no sound at all. CD and Cassette are similarly non operative. I don't use the phone.
Any thoughts on the potential causes of/remedies for my problems? I suspect the best course is to get the car to Porsche but obviously I'd like to be have confidence that these will be warranty jobs, otherwise both sound potentially very expensive...... Thoughts?

 

[David Vickers]

I recently purchased an 02 C4S and had occasional problems with second gear. Sometimes it just wouldn't go all the way in and would jump out. I took it back to the OPC who advised that synchro had gone on second. They sorted out the warranty claim with Porsche and fitted a new gearbox. Mines done 22k miles.

 

[ArBee]

Be very grateful you have the warranty as the Gearbox and Diff will be under the warranty. Don't know what the Diff cost is but I know the Gear Box is 5k.

The PCM (and this is from memory, I am not looking at my warrnty info here) is not covered under the warranty

 

[Lawman]

Thanks for these responses. I rather suspected as much about the PCM not being covered. I've now checked and that is correct. I'll book it in and hope for the best!

 

[THX911]

ORIGINAL: Lawman

Recently (3 months ago) purchased an 02 996 Carrera 4 (facelift)from a good independant dealer and also got the all important Porsche warranty. Cars done 24k miles and had 3 owners.

Isn't this good indi dealer suppose to cover certain issues (for a year) like those not be covered under Porsche warranty? ...PCM, etc?

 

[Guest]

As regards the PCM; try pulling fuse D8 in the fuse box (if you haven't already); this should re-boot the PCM. You've obvioulsy checked all the various settings on the PCM - silly question I know!

 

[jramsden68]

Try keypad 1+4+8 for 6 seconds. This is supposed to reset the PCM software.

Cheers, Jason

 

[ghia70]

I had the same sort of noise from my 98 car, thought it was a wheel bearing. OPC checked the car and advised it was the gearbox bearing. Changed the complete box under warrenty, also had a new clutch fitted at the same time - did not charge me labour for this. OPC was Tonbridge.

 

[Lawman]

Thanks for these posts. Asked a friendly Porsche trained engineer to look at/listen to it first. Whine I'm pleased to say has been dignosed as a bearing - one of the pulleys I gather which is a quick and cheap fix. PCM was fixed by him simply taking it out, pulled all the wires off the back, stuck them on again and hey presto!! Clever guy. Cost me a beer which cant be a bad deal compared to what the OPC would've been.