Coolant distributor barb came unglued causing loss of coolant on highway. Car was in motion on the highway. This is a common issue and Porsche has updated the part however will not warranty the defective parts still on vehicles.

- Dallas, TX, USA

Engine rough idling which dealer cannot diagnose

- Northbrook, IL, USA

On the backside of this V8 engine there is a coolant distribution tube that has coolant barb pressed into the cast aluminum distribution tube with adhesive. While driving from wor to home, the adhesive failed 19mar20 causing the barb to slip out of the tube allowing large amounts of coolant to gush over the hot exhaust and out from under the Cayenne. The engine control unit recognized low coolant level the dash panel flagged "low coolant" and the vehicle was pulled over before overheating the engine. Fortunately due to the teleworking status of where I work there was no traffic behind me and thankfully no motorcyclist. I would expect more a $71,145 vehicle from Porsche even after 12 years and 140K mi.

- Huntsville, AL, USA

Parked vehicle and attempted to turn off got a red alert steering faulty, everything locked up including transmission and window switches..had to be flat bedded to a Porsche dealership took a week for them to figure out, had to replace steering column.concern is what would have happened if driving at the time..got no answer

- Sequim, WA, USA

While leaving my home in my 2008 Porsche Cayenne turbo, the car started hesitating and then stalled out with a pdc error. After taking it in to the local Porsche dealership they reported finding nothing. The issue would occur 2 more times and I took it to a local mechanic specializing in Porsche who stated it was the throttle body. This was replaced however the issue is reoccurring with supplement errors such as chassis and check engine. My issue isn't uncommon please see provided links where others have had the same problems with their pdcc system. www.6speedonline.com/forums/Cayenne-955-957/200781-3rd-repair-attempt-warning-chassis-system.html rennlist.com/forums/Porsche-Cayenne-forum/699011-pdcc-major-problems.html www.renntech.org/forums/topic/45581-warning-chassis-system-on-2008-Cayenne-turbo/

- Fort Worth, TX, USA

We found a huge leak in the coolant system while the car was parked, a porshe technician identified that on the coolant distributor behind the engine there is a coupler which was glued onto the distributor. The glue detached and the coolant pipe blew out causing the entire engine to lose coolant. I believe that it is a pure design issue and Porsche did not issue a recall on it. It was very expensive to fix that problem due to bad design.

- Orem, UT, USA