eugkim

I've had the rear hatch switch replaced twice per the TSB's. Apparently, there's another to be had. I made the mistake of opening the hatch over the weekend, had a heck of a time getting it closed again. Unfortunately, I had stuff in the back, and I was carrying the bimini top to my boat on the roof rack, so I couldn't use the whole door, just the pop-up. I doubt I'll ever have full confidence in the latch mechanism.

ltc

Fear not, as the latest (3rd revision) rear window microswitch TSB replaces the 2nd revision of the rear microswitch with the EXACT SAME P/N as was used in the 2nd!

mudman2

Don't be suprised, the numbering system has a date content seperate from the main 955 etc. Example: transmission control unit model yr 05 has 4 perhaps even 5 variants with one part number.

ltc

Yes, that was my initial thought.
However, after examining the 2nd and 3rd revision rear window microswitch assemblies called out in the TSB, myself, the service manager and the parts manager all agreed....it's the same exact part.
Apparently, rather than deploy a modified design (re: more $$ to spend for PCNA/PAG), just install the same part, just new.

Think of your rear window microswitch as a consumable, just like rotors, pads, oil, filter. After a while, dont' install a redesigned part, just install a new part identical to the 'worn out one'.

That's your Porsche Cayenne bedtime story for the night.....

ltc

Trust me, there is NOTHING about the Cayenne that would surprise me

MadFox

Well, if the microswitch "fits".... I have never had an issue with the latch and do not use it much... so if PAG does have a low failure rate with the design and most people don't have the "glitch" wouldn't it seem reasonable to just replace the defective one? Or am I missing your PURPLE tongue being squarely against your cheek?

ltc

No, no Purplesaurus Rex Kool Aid.....just the poop and nothing but the poop regarding the 4 wheeled piece of poop, from the folks who brought it to you, PAG and their American representatives, PCNA.
We now return you to your regularly scheduled programming already in progress......Cayenne Update of the Week.

955 GUY

if you are stuck somewhere, and the hatch wont close (as happened to me recently), here is the emergency trick. pop the plastic cover off the window, and disconnect the power lead. it comes off really easy, and stops you being stranded. the dealer can then sort it out!!

rockitman

my rear window hatch part number is: "work's perfectly"

ltc

Yes, but much like the infamous A506 "Cowboy belt buckle" rear seat belt TSB/recall, the next time your Cayenne is in for service, the dealer is OBLIGATED BY PCNA to replace your perfectly working rear window switch and replace it with a new one. Wild, huh?

Zin

Have had no problems with mine either...yet?!?!?

eugkim

My solution has worked well. Never open it. It's never failed since. I will go for the update, though.

ltc

Ah, a Cayenne rookie, you've not lived here long enough to recall the posts which started out like....

"Why the HELL does my rear hatch open all by itself"?
"My rear hatch is possessed" "I can't keep the rear glass closed"

Leaving it alone doesn't mean it won't break or isn't already broken.

Ah, yes, the good old days.

Budget M3

Wouldn't pulling the fuse provide the same "emergency fix" without running the risk that you damage the plastic cover or get a "you butchered it, it's your fault" story from the warranty dudes at the dealer?

set4lfe

I recently opened mine for the first time and now it rattles. The dealer claims to have fixed the rattle but it still rattles I had a hard time closing it too, I thought it was just me doing it wrong. If I did it too hard it would bounce and too light it wouldnt be closed.