Gus22

I have a 24 cs. No issues with 6 gear. It definitely will lurch/surge most notably in sport or sport plus. Will also do it when taking several tight turns in a parking garage.

PorscheACC

I have a 2019 Cayenne S, and never had the
6 gear issue or droning either. Bought it brand new and now with almost 100,000 miles..

My severe 3rd gear to 2nd gear lurching while braking (Sports mode only) was finally fixed at around 20,000 miles, and never came back. Other nasty issues were fixed too, like clunking noise while going up the driveway during turning and hard accelerating..

A couple of us contacted the dealer to see how they fixed it, but there was no notes on how it was fixed. There was no notes because Porsche does not log certain warranty repairs in order to not show detrimental issues in their newer models.

Shifting and downshifting is smooth in all gears and modes.

Besides random electronic gremnlins, my vehicke is working great now..

bpcmd

Ive got about 40K on my 2019 turbo, no issues except for the part that controls charging the Li battery, and was replaced under warranty.
However, check engine light came one and I have multiple codes
P218100 - cooling system malfuntion
P1BB400 - head temp too low
P016100 B2 S2 - oxygen sensor malfunction
Anyone have any experience with this?

PorscheACC

Sounds similar to the following TSB..

Ron.s

I took delivery of a 2023 C GTS early November, 2023. Experienced rough idle within a week followed by CEL in 3-4 weeks and a notice that Auto Start Stop was inoperative. I also began to notice a funny noise...hard to describe but kind of a rubbing sound when downhifting with paddles. Dealer appoinment resulted in diagnosis of bad low side fuel pump and the noise as normal. Time in shop 6 weeks-test driving, sound recorder, communication with Tech Support in Germany and waiting on a fuel pump from Germany.
Too many tech glitches to list, most random and unresolved after a year.
The rubbing sound kept increasing in intensity and a mild vibration could be felt in the floorboards at the same RPM in different gears. My assumption was that the gear mesh where the "hang on transfer case" coupled to the transmission was the source. Could have been somerhing else in the transfer case or transmission. The 8-9 hour time differential between Germany and Mountain Standard time complicated Tech Support communication.
At this point I filed for a repurchase since there was no apparent interest or solution offered such as replacing the transmission. Porsche refunded me 100% of the purchase price after almost a year...more than fair.
Loved the car enough to try again with another C GTS scheduled to build in late August.

Hotsaucepancakes

I have a 21 base Cayenne Coupe, it has the lurching problem right around 1300 RPMs, since leasing the car I've had the car in the shop at least 5 total months. I took it up with Porsche and they gave me a $2500 credit but... its still horse $H1T i have to deal with it. My local dealer gave me a fair deal on a new 992 '24 build so I'm happy for now... until i have to turn in this car.

FWIW.. I had another dealer REPLACE the entire transmission as they searched for the problem... I suspected it was in software.. but reading here now

Ironically the REFURBISHED transmission they put back in the car introduced the 6th gear vibration issue..

What an absolute failure.

chassis

The transmission is not the source of the 6th gear vibration. The “hang-on” multiplate wet clutch device, aka transfer gear, is the cause.

Lurching or surging is caused by a combination of the dual spring mass damper, aka pendulum, and lockup clutch modulation.

The torque converter/lockup clutch and transfer gear solutions on this car are terrible.

The transmission is fine.

Kendo67

Got it back from the dealers on Friday after waiting for a month to have the rear springs replaced , now have the dreaded "Low Battery" warning being displayed.

Popped into the dealers and was told to charge the battery and take the vehicle for a decent run , even though the AG battery monitor is showing 99% charge and the stop / start is working as it should.

Getting fed up with this vehicle now after the time it has been in the dealers and not on my driveway.

Beginning to wish i had bought the X5 40i..

K

chassis

Added to the list:

- PSCB noise complaints when new and apparently an emerging issue with “bumps” on the rotors as they age. Porsche no longer offers PSCB so it suggests they are aware of the problems. No solution to noise, warranty rotor replacement with “bumps” might be possible depending on the dealer and your persistence.

Bander70

Any issues with seal leaks, either windows or more probably the massive sunroofs? It's the reason I'm here on Rennlist....leaving my G05 X5 as they cannot for the life figure out the sunroof leak issue. Porsche is one of the few (only?) that I can order WITHOUT the sunroof...but just curious if you've heard of any leaks.

chassis

Haven't seen any reports on the 9Y0 forum regarding door, window or sunroof leaks.

Sunroof leaks can happen from debris plugging the 4 drains in the corners of the sunroof trough. It's good practice to check the drains for blockage once per year. Parking under trees is a risk factor for plugged sunroof and cowl drains.

chassis

Adding an emergent issue with turbo waste gate lever (arm) failure.

https://rennlist.com/forums/cayenne-...yenne-s-2.html

chassis

Updated list:

• .1 lurching, surging or lurging when downshifting - believed to be related to the dual mass torque converter damper and lockup clutch release programming
• .1 6th gear vibration or shudder - believed to be related to the wet multi-plate torque transfer clutch mounted on the rear of the transmission - mainly affects V6 powertrains
• controllable water pump shroud seal failure - causes collateral damage to the vacuum system - can affect V6 and V8 engines
• oil vapor separators - regular maintenance item on all modern German direct injection engines - can cause excessive crankcase vacuum or pressure which can fail seals and gaskets - can affect V6 and V8 engines
• .1 Porsche Surface Coated Brakes - squealing, no known solution other than changing to standard rotors and pads
• early .1 LiFePO4 main battery - can fail prematurely - members have reported the battery is replaceable under warranty. Late .1 and all .2 use AGM batteries.
• PSCB noise complaints when new and apparently an emerging issue with “bumps” on the rotors as they age. Porsche no longer offers PSCB so it suggests they are aware of the problems. No solution to noise, warranty rotor replacement with “bumps” might be possible depending on the dealer and your persistence.
• broken turbo wastegate lever near approaching 100k miles.

PorscheACC

Great summary of the main critical issues chassis.!!

Then, there is the electronics gremlins, but that will be difficult to concisely describe..

3-Pedals

What are these oil separators? Where are they in the engine bay for a V8? What are the signs of failure? Can you visually check them?