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1 pointBecause my wife and I share the driving and she’s a small person, our power seats get quite a work out. I once posted on how to handle groaning noise in the fore and aft adjustment. Lately we had grinding noise in the seat height adjuster. Here’s what I found. There’s three electic motors under each seat; one for each function: back/front, height and tilt. The height motor drives the lift mechanism with an about foot long bowden cable and this cable was the source of my noise. The cable is very similar to an old-fashioned speedometer cable and just like of old, when the cable gets noisy, it just needs lubrication. Its an easy job though the seat needs to be unbolted and tilted up from the front to get access. No need to unplug wires. The cable is fastened on each end with a clip and two torex screws. Undo one end and feed lubricant in between the inner cable and its outer housing. You can use a dedicated speedo lube but I just patiently fed in motor oil. Now the adjustment is back to a gentle hum instead of an ugly grinding rasp.
1 pointThe fluid line runs along the right-hand side in the roof covering to the rear, then to the middle, in line with the nozzle. The most rear part of the roof covering must be removed to fix the problem, the fluid line jumps off from the connector to the nozzle, usually due to excessive pressure caused by partial or complete blockage of the nozzle. Beware of possible water damage to the electronics inside the lower rear space.
1 pointInterestingly enough, there isn't much information out there! I did come across a Porsche Rear Seat Entertainment (PRSE III) Display Unit Replacement for a 2011 Panamera though... I will PM it to you...
1 pointHi, I know it's an extremely late response, but at least SOMEBODY will have replied... These forums don't just run themselves - we have to help each other! Let me know if this helps you. Service Manual48314-2011_Porsche_Cayenne_II Reaer Seat Entertainment Circuit.pdf