Sunroof drain and PDK oil change costs

Technical Forum for the Porsche Macan
Deleted User 4436

Post by Deleted User 4436 »

Plummie2 wrote: Fri Sep 10, 2021 10:04 pm I found water dripping from top of both windscreen pillars and interior mirror area soaking both front and rear carpets? checked all four drain holes by introducing water, flowed nicely away. Water ingress noticed shortly after our move to a new property which has a slight slope up to the garage. This change in the vehicle’s parking attitude made me think may be in heavy rain the rear drain holes were being overwhelmed, but the water was entering at the front of the vehicle , what was going on? On Googling I found information suggesting the pan-roof cassette was building up water at the rear section overwhelming the front drain holes forcing the build up of water to find another route i.e; front pillars and mirror, and because it was parked on a slope it also found it’s way to the rear foot wells. My answer to the problem, not a fix, turn the car round so it faces down my drive rather than up, this transfers the build up of water to the front of the pan-roof cassette allowing it to flow away safely, end of problem, well sort of, because I still have to remember to park this way if out in rain in a hilly area. I believe this is the real problem in the main, but of course blocked drain hole(s) will cause a similar problem on the flat and exacerbate a similar problem to mine. Just one other thing, if the pan-roof is 1 mm out of adjustment at the front it won’t help, when closing I give it a slight push to, I like to thing this helps? It is my belief Porsche KNOW what the real cause is, but to rectify they would have to introduce a new MODIFIED (probably used in late vehicles) cassette assembly to all effected vehicles costing the company thousands of pounds!!
well thats a worry as mine will be parked on the drive ( we don’t have a garage ) and its a very steep gradient. There’s no way I’ll be able to park it pointing the other way.

btw, interested in your name. My dad was always called Plummie ( as was I by some people ) because of my surname. Its not a massively common surname so I’d be interested if that’s where you get Plummie from.

Plummie2
Posts: 10
Joined: Thu Feb 18, 2021 11:04 am

Post by Plummie2 »

Don’t know answer to your situation, other than a water proof fabric roof cover?
From Doncaster, but Plumb family originally from Peterborough / Cambridge area late 18th century.
Rigger
Posts: 312
Joined: Tue Dec 06, 2016 11:24 am

Post by Rigger »

Plummie2 wrote: Fri Sep 10, 2021 10:04 pm I found water dripping from top of both windscreen pillars and interior mirror area soaking both front and rear carpets? checked all four drain holes by introducing water, flowed nicely away. Water ingress noticed shortly after our move to a new property which has a slight slope up to the garage. This change in the vehicle’s parking attitude made me think may be in heavy rain the rear drain holes were being overwhelmed, but the water was entering at the front of the vehicle , what was going on? On Googling I found information suggesting the pan-roof cassette was building up water at the rear section overwhelming the front drain holes forcing the build up of water to find another route i.e; front pillars and mirror, and because it was parked on a slope it also found it’s way to the rear foot wells. My answer to the problem, not a fix, turn the car round so it faces down my drive rather than up, this transfers the build up of water to the front of the pan-roof cassette allowing it to flow away safely, end of problem, well sort of, because I still have to remember to park this way if out in rain in a hilly area. I believe this is the real problem in the main, but of course blocked drain hole(s) will cause a similar problem on the flat and exacerbate a similar problem to mine. Just one other thing, if the pan-roof is 1 mm out of adjustment at the front it won’t help, when closing I give it a slight push to, I like to thing this helps? It is my belief Porsche KNOW what the real cause is, but to rectify they would have to introduce a new MODIFIED (probably used in late vehicles) cassette assembly to all effected vehicles costing the company thousands of pounds!!

You shouldn’t have to have selective parking on a £60-70k ish car to avoid water ingress as a result of something that is clearly a factory fault. Another fix is for the roof cassette to be resealed and this was the task that appeared to remedy my 2017 GTS. Previously it had suffered from water running down the A pillars, soaking the carpets, flooding the battery compartment and generally being a nuisance. If you haven’t done so already I advise you to get your OPC to remedy the situation as once the warranty period is up they will simply want to empty your wallet.
2017 - Macan GTS ~ now sold
2007 - 997.1 Turbo (Manual)
2021 - GR Yaris
Deleted User 4436

Post by Deleted User 4436 »

Rigger wrote: Mon Sep 13, 2021 7:38 am
Plummie2 wrote: Fri Sep 10, 2021 10:04 pm I found water dripping from top of both windscreen pillars and interior mirror area soaking both front and rear carpets? checked all four drain holes by introducing water, flowed nicely away. Water ingress noticed shortly after our move to a new property which has a slight slope up to the garage. This change in the vehicle’s parking attitude made me think may be in heavy rain the rear drain holes were being overwhelmed, but the water was entering at the front of the vehicle , what was going on? On Googling I found information suggesting the pan-roof cassette was building up water at the rear section overwhelming the front drain holes forcing the build up of water to find another route i.e; front pillars and mirror, and because it was parked on a slope it also found it’s way to the rear foot wells. My answer to the problem, not a fix, turn the car round so it faces down my drive rather than up, this transfers the build up of water to the front of the pan-roof cassette allowing it to flow away safely, end of problem, well sort of, because I still have to remember to park this way if out in rain in a hilly area. I believe this is the real problem in the main, but of course blocked drain hole(s) will cause a similar problem on the flat and exacerbate a similar problem to mine. Just one other thing, if the pan-roof is 1 mm out of adjustment at the front it won’t help, when closing I give it a slight push to, I like to thing this helps? It is my belief Porsche KNOW what the real cause is, but to rectify they would have to introduce a new MODIFIED (probably used in late vehicles) cassette assembly to all effected vehicles costing the company thousands of pounds!!

You shouldn’t have to have selective parking on a £60-70k ish car to avoid water ingress as a result of something that is clearly a factory fault. Another fix is for the roof cassette to be resealed and this was the task that appeared to remedy my 2017 GTS. Previously it had suffered from water running down the A pillars, soaking the carpets, flooding the battery compartment and generally being a nuisance. If you haven’t done so already I advise you to get your OPC to remedy the situation as once the warranty period is up they will simply want to empty your wallet.
My old Freelander used to be a tad leaky. Ended up fixing it by putting clear bathroom sealant around the sunroof, and, interestingly, around the aerial. Seems the rubber around the areal perishes and the water can then get though the hole the aerial screws into (which was between the windscreen and the sunroof). A neighbour had the same issue with his Discovery and fixed it by duck taping a bin bag over the sunroof. If my £65k Porsche needs any of the same remedies there will be some top level shouting going on.
ppj50
Posts: 13
Joined: Tue May 25, 2021 6:52 pm

Post by ppj50 »

Had terrible service from main dealer for this drain problem, they made it sound like it wasn’t a common fault. Car well out of warranty, so now use specialist who cleared crud and mud from ends, clipped off the “lips” on the end of the pipes which should allow a regular flow to keep them clear, also bought a 1.6m long pipe cleaning flexible brush, like a bottle brush but much longer. These are sold as cleaning tools for fridge drains, be careful you don’t force this thru as you may puncture the drain pipe running down inside the pillars. Works OK but as above you can’t get to the rear holes in the pano drain surround channel.
SteveTTT
Posts: 26
Joined: Mon Jan 09, 2017 10:19 pm

Post by SteveTTT »

I got a similar quote from Portsmouth Porsche for a PDK service. Nearly fell off my chair!

Bahnsport in Blandford Forum will do this for £220+vat, all to correct specs so it won’t invalidate your warranty. They are a credible indie operation, one of the two partners is the “Ask the expert” in Total 911 magazine.

They are an hour away from me but I know where my money is going in 1500 miles time when my service is due.

Might be worth trying independents nearer you though. By the way, Bahnsport have an interesting Instagram presence, posting daily on the jobs they have lined up.
Current: 2017 Macan S D, 991.2 C2S

Previous Porsches: 964 C2 Cabrio, 986 Boxster S, 996.2 C2, 996 Turbo, 997.2 C4S Cabrio, 996.2 C4S, 991.1 C2S Cabrio
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