Cayenne (958) Tiptronic & Transfer Box issues

Cayenne (958) Tiptronic & Transfer Box issues

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Spuffington

Original Poster:

1,125 posts

135 months

Thursday 8th April
quotequote all
Pride comes before a fall and all that...! After posting my glowing review of the swap from Macan to Cayenne, the car is in with OPC Cambridge and I've been notified of a number of issues.

Since collecting from OPC Swindon 5wks ago, I'd noticed some hesitancy between 2-3k rpm when accelerating. Bit strange, I thought, given the spark plugs had just been replaced during a Major Service pre-purchase. But on top of that, I'd noted extreme Ackermann when turning out of my close and on any junctions requiring a good bit of lock. Previous experience with my Macan suggested the transfer box was having issues - OPC Cambs have confirmed that the hesitation is also down to this and they are investigating whether it meets the threshold required to replace the transfer box under warranty.

I know the transfer box is less of an issue on the Cayenne than the Macan, but still surprising for a 2017 car with 38k miles. I thought the issues were on much earlier cars.

Separately however, the gearbox felt a bit clunky and reluctant to change smoothly. I thought it was the difference between Tiptronic and PDK, but OPC Cambs have said there is a palpable issue and they have undertaken a software upgrade and reset of the adaptations. If that doesn't cure it, then it will be a gearbox oil change.

Anyone else had any such issues with the Tiptronic box?

On top of that - a sticking RH exhaust flap/actuator, which might explain why I've been so underwhelmed by the sound of the thing compared with the Macan, in spite of the fact this one has a PSE which the Macan didn't.

Are these known issues or have I just been "unlucky"?

I'm very pleased it's an OPC car and it'll all be covered under warranty. Less pleased at having just dropped nearly £50k on a car a month ago, for which Swindon OPC seems to have missed a number of issues.

nutsyH

457 posts

165 months

Monday 12th April
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Spuff

This transfer box issue is a well know problem with Cayennes and Macans, and well known to the OPC's & Porsche. My 2016 Cayenne at 40k miles is on its 3rd transfer box. Search on here for the detailed threads - I started one which got lots of replies.

My new TB is a "revised", which Porsche are now fitting with suitable re-engineering, and giving a 3 year warranty on them. The symptoms you describe fit exactly with mine, although I didn't have the Ackerman problem.

Paul

Spuffington

Original Poster:

1,125 posts

135 months

Tuesday 11th May
quotequote all
Thanks for that.

Yes, I had a few on my Macan previously.

OPC Cambs has updated the adaptations on the gearbox and that seems to have improved matters for the moment. Every now and again I get a bit of a judder though. Its going back to OPC Swindon next week to resolve a few other bits so will be pointing out the gearchange and transfer box like juddering. I'll see what they say but it would be good to get it resolved before it properly becomes an issue and before the car spends any further time in with the dealer.

Spuffington

Original Poster:

1,125 posts

135 months

Monday 28th June
quotequote all
Well, the adaptations didn't last long. Within a week, it was back to being a bit lumpy again.

Fast forward a few weeks and it was in with Porsche Swindon - however they failed to find anything wrong.

Fast forward another 6 weeks and it's just been lifted by Porsche Assistance back to OPC Cambs due to what feels like a complete gearbox failure. Shunting gears home, delays in engaging them, shuffling between cogs on low throttle openings, paddle shifters gone to sleep, lurching like it's going to stall, unwillingness to rev beyond 3k rpm on some occasions and vibrates like driving over cobble stones at 50-80mph.

Evidently it had a transfer case at 17k miles but they're not sure if it was the upgraded version (I'd have thought so given it's a MY2017 vehicle anyway).

Watch this space.......