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WATER IN THE BATTERY COMPARTMENT

W

wilkey

New member
Whilst trying to sort out another fault (ACC/PAS unavailable - service required), the OPC technician decided to check the battery and found the battery compartment was full of water Corrosion around the terminals - so was that the water level? Clearly a water leak, but from where? The annoying aspect to this is that I have reported the ACC/PAS fault three times. Obviously fobbed off twice and taken seriously the third time. So question is "how long has the water ingress been occurring?"

Any other Macan owners aware of water leak problems into the battery compartment and is there a fix?
 
The latest report from my OPC regarding this water leak is that it is emanating from the sun roof. How common is this?
 
I have a Cayman and it comes in via the windscreen (under the rubber) as its not seated in one particular place opposite the battery etc, so worth checking the window rubber is good?
Cheers!
 
scooby64 said:
I have a Cayman and it comes in via the windscreen (under the rubber) as its not seated in one particular place opposite the battery etc, so worth checking the window rubber is good?
Cheers!
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Thank you for that. I didn't realise that Caymans were fitted with panoramic sunroofs. However, my car is with the OPC and I am sure that the senior technician will look at the various seals
 
Hi there, I’ve just noticed the same thing after the car (2017 Macan Diesel) kept steaming up. Took out half a bucket of water from the battery compartment after packing the car for camping this weekend. Porsche Assistance even refused to come out saying what could they do that I couldn’t. Luckily I didn’t get shocked squeezing my hand and a heavily soaked flannel between the terminals. Must have been leaking for ages as everything was mouldy in the boot under the wheel cover including the Bose sub woofer. Had it serviced in March for the first time, surely an inspection of the battery would have been included.

Did you ever get to the root of the problem and what we’re Porsche willing to do, car is still on finance and needs a good drying out, noticed the rear interior seat hinges are rusty and it smells like a damp cellar now. i have it booked in but not for a few weeks as no courtesy car available, not a happy bunny ????

Many thanks
 
Once the problem had been identified, OPC Tewkesbury went the extra mile to resolve the issue. I will never know for sure, but I suspect it was down to a poorly routed drain pipe during manufacture and thus the leak may have been there for just shy of two years. There were several components which needed replacing (all under warranty), including the sub woofer, battery and other ancillaries in and around the battery. That said, OPC Tewkesbury had to get permission from Porsche GB to replace the battery as that item is not included as a warrantied part. The argument used was that the corrosion and battery fault was a s a consequence of the water leak. Fortunately, there was no smell of 'mould' and no other indications of corrosion. Like you, I was disappointed that the OPC could not provide a courtesy car, especially as they kept the Macan for some two weeks. Earlier this month, the car had its 40,000 mile service and I asked for a specific inspection of the battery compartment - all good news, all dry and no sign of corrosion. Happy with the result but not so sanguine about the time it took to get to the bottom of the problem.
 
Wilkey, thanks for the reply. Good to know as I intend to keep the car long term for towing. Goes in on the 23rd. I’ll post something once it’s done.
 
Orv987 said:
Wilkey, thanks for the reply. Good to know as I intend to keep the car long term for towing. Goes in on the 23rd. I’ll post something once it’s done.



Hi Wikey, the Macan went in and appears was leaking from the rear sunroof drain pipes that run down the side panels into the boot and then out behind the rear wheels. The garage apparent enlarged the drain holes to prevent further blockages. They changed the Bose and dried it out and re-gassed the aircon all under warranty. I think the battery was changed as well as I had marked the old one. I’m happy with the response from Porsche but still disappointing. My 20 year old Alfa still doesn’t leak. Anyway its back and smells better than it did, I still have the Mrs looking for her Jo Molone diffuser.
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Today I discovered the battery compartment in the boot of my just out of warranty (!) 2017 Macan S diesel is full of water about 4-5 inches deep. The sub woof was partially submerged (the electrical connection completely submerged) so I’ve got the battery out and have dried the area. The boot lining is mouldy but hopefully will clean up when dried off. Previous post points the finger at the drainage points blocked at the rear of the sunroof and the problem was solved when these were enlarged and cleared out. I can’t understand how the water gets from the sunroof to the boot if the tubes are blocked? Wouldn’t the water just fill up around the outside of the sunroof and then run down the roof? I want to stop my leak and will check the drainage points tomorrow but could do with a better understanding of how the water drainage works if anyone is clued up about it please! Thanks in anticipation:)
 
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