'08 rear wiper and horizontal trim

[geoff]

When my wife got home tonight, I asked her what happened to the back of our Cayenne, and she said "huh?!" The horizontal plastic trim piece that looks like a dark smoked color under the rear window was cracked with chunks missing, and the rear wiper arm was missing. She thought someone might have hit the car when it was parked, but I'm guessing the valet parking guys at her office went looking for goodies and opened up the rear lid in the garage, hit it on a low spot on the garage ceiling and cracked the parts. The telltale sign was the rear wiper arm sitting on the floor of the back seat!

The latest Porsche PET online only has the Cayenne up to 2006 model year, and the rear wiper arm assembly looks different on our 2008 from the pictures. I'm trying to figure out what we need to replace. It looks like the rear glass has a deep gouge, the trim piece below the rear window need to be replaced (it just snaps in to place), and the wiper arm is now loose. Does someone (Loren?) have a parts illustration and part numbers showing those areas for a 2008 Cayenne S, please.

Of course, my wife's office's valet parking agreement doesn't hold the valet service liable for any damage. But the fact that they broke the car, didn't say anything and just tossed the wiper arm in the back means someone knows what happened.

[Loren]

Tell me which 'MG' and 'SG' pages you want and I'll download them for you later tonight.

[geoff]

Tell me which 'MG' and 'SG' pages you want and I'll download them for you later tonight.

Loren - thank you very much.

On the 2006 PET on Porsche's web site, the rear wiper arm is on MG 9 SG 04 Illustration 904-05. The wiper arm that's broken off is part 8 in the figure, but mine looks like it's constructed differently from the '06 model.

The rear trim piece looks like the '08 equivalent of MG 8 SG 07 Illustration 807-35 part 15 or 20/21 - hard to tell what's what from the fine illustration. The rear window is part 11 in MG 8 SG 05 Illustration 805-00. All I have to go on is the old PET, so I'm not sure if anything changed with the '08 model year

Since I've seen the online PET before but never paid much attention to the page headings, what is MG and SG? Something like "Service Group?"

[Loren]

I think it is:

MG = Main Group

SG = Sub Group

and then Illustration number

These match the same groups in the service manuals and PIWIS.

For MY2008 Cayenne:

904_05.pdf

807_35.pdf

[geoff]

Loren - Thank you for the info. Since the wiper arm appears to be a complete assembly in the parts diagram, I'm guessing mine isn't going to snap back together. My dealer's parts manager ordered parts for me, so I think it's time for a trip to the dealer to confirm parts, etc. It's kind of hard to confirm which outside trim piece is needed since the drawing perspective is from the inside looking out.

Since the tailgate automatically opens and it's easy to hit garage ceilings, I'm sure others will break these parts, so I'll report back on the final resolution of parts and installation

[geoff]

Got the parts from the dealer yesterday. Talking to the mechanic, when removing the wiper arm, the plastic cover has to be removed first, and odds of it being usable afterwards are hit and miss. So I picked up the cover, which is only sold bundled with the switch for releasing the rear glass (part 6, Tip Switch Rear, in Loren's figure 904-05). I found the removal instructions here but didn't see any indication of how much to retighten the 13mm nut. Anyone have the torque spec for that nut (part 10 in Loren's figure 904-05)?

Before and after pictures are coming

Compared to the Boxster and Carrera, Cayenne parts seem to be quite a bit less pricy, although wiper blades are expensive!

[Loren]

24 ftlbs.

[geoff]

Just to close out this topic, here's the before picture of the trim and (what's left of the) wiper arm. After picture looks like new, so no point in posting. After this experience, I set the tailgate so it wouldn't open nearly as high so it doesn't smash into any more parking garage ceilings, using the procedure described in the owner's manual.

The trim under the window just pops in and out - replacement takes less than a minute. I had the dealer replace the window (insurance co. for the garage paid), and the mechanic said it takes a lot longer than expected due to all the pieces that have to come out first

Edited January 5, 2010 by geoff