Cayenne E-Hybrid Water Ingress Hybrid Battery Failure - Porsche Cayenne Forums : Porsche Cayenne Forum
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post #1 of 3 Old 06-29-2020, 10:57 AM Thread Starter
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Cayenne E-Hybrid Water Ingress Hybrid Battery Failure

Hi All, having an absolute nightmare with my 2015 Cayenne E-Hybrid and really would like some advice. At the moment it looks like Porsche are refusing to pay anything towards replacing my hybrid battery even though its still under warranty I could be paying over 10,000 myself to fix it! Brief summary of the situation:

- 1st Feb car would not open. Recovery jump-started it but died again after 24 hours. Specialist then replaced the battery, but it died again 2 weeks later
- Been with OPC since 5th March. Its now almost July and the car still wont start. They recommended replacing the control unit as it was emitting high voltage (charging me 2,700). This hasnt fixed the problem.
- Now Porsche GB want to get a hybrid battery specialist to examine the battery and there's only one in the UK. They think hes going to conclude that the problem is water damage which will exclude a warranty claim.
- They think cause is water coming in from the sunroof and are blaming me for not getting drains cleared at the last service. There's no mention of drains in service video.
How can an SUV be designed to accept moisture through the sunroof into the hybrid battery?
- I believe the battery was always faulty - from the time I bought it in Nov 2018 it never held charge fully.
- Porsche GB have shown little empathy. Said theyll 'review the goodwill situation at the end', but OPC telling me its unlikely theyll show any goodwill at all. No courtesy car either so Ive been without a car for 6 months basically and no end in sight
- It was clear the start that the battery was at fault they shouldve brought the hybrid specialist in at the beginning. This fanfare with the control unit has just wasted a lot of time and money.

Anyone with a similar experience and any advice? Feel pretty stuck and disillusioned. Loved my Cayenne but the way Im being treated here Id never buy a Porsche again.
HSC123 is offline  
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post #2 of 3 Old 07-01-2020, 11:56 PM
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Join Date: Sep 2019
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We had water inside our 2019 e-hybrid. There are two small hoses one on each side where the sunroof channels drain down into the wheel wells. One of ours was pinched during assembly and it leaked every time it rained, only way we noticed was someone was in the back seat and told my wife water was dripping from the rear pillar. All sorted now and luckily have a record.
CanAsia is offline  
post #3 of 3 Old 11-14-2020, 10:14 AM
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Join Date: Nov 2020
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Hi I have the same problem with my Panamera they have told me water has got in through the charge port and the tail fin because the water channels were blocked and the car must be sent to Germany to be looked at and repaired and they have said it would cost 4000 to send it to Germany and a possible 12000 to repair, my car is just out of warranty but in January I had a 111 point check done on the car and the drain holes ticked off as clear, since January I have done about 4000 miles and we have had a good summer, they say the holes are a service item so seeing that the service interval's are 20000 miles or 2 years how often do the holes have to be checked, how can such a high prestige car have such a fundamental design fault to allow water to get in anywhere near the main high voltage battery pack.
I need help as well.
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