2016 Porsche Cayenne S E- Hybrid problems

“While driving vehicle, noticed some slippage/clunking when turning. Took vehicle to Porsche dealer, they said transfer case needed to be replaced. Car has 12,600 original miles on it. Dealer said there was an extended warranty on the transfer case that had expired. In researching, it became obvious that there is a Porsche design problem that affected several model years for the Cayenne. As a mechanical engineer I am concerned that a transfer case failure at freeway speeds could be dangerous. Separately an auto mechanic shop opined that driving without replacing could be a safety concern. In my opinion there should have been a recall rather than a extended warranty.”

“Porsche dashboard leather shrunk and staples pulled out. I was told that if the vehicle was in an accident the airbag might not deploy correctly. The Porsche dealer looked at it and recommended replacing it. This is a very common issue.”

“**Subject**: Urgent Safety Concern: Headlight Condensation and Water Damage in 2015-2018 Porsche Cayenne 958.2 Dear NHTSA, I am writing to report a serious safety issue with the LED matrix headlights on my 2016 Porsche Cayenne GTS (958.2). The problem involves severe condensation buildup within the headlight assembly, leading to water damage and electrical failures. This defect has caused my headlights to fail, particularly during nighttime driving in heavy rain, which significantly reduced visibility. This failure could have resulted in a major accident, putting my life and the lives of others at risk. The vehicle is available for inspection upon request. The issue first became noticeable after a rainstorm, where condensation started to build up inside the headlights. Despite multiple visits to my local Porsche dealership, where they confirmed the problem and attempted repairs, the issue continues to persist. I also notified Porsche corporate directly, but neither the dealership nor Porsche offered any assistance or permanent resolution. Both have failed to take responsibility for what I believe is a widespread defect, as I have found numerous similar reports…”

“Engine oil leak detected in 2021 @33,195 miles caused by broken aluminum bolts in upper part of timing cover. Repaired by dealer on a “good will” basis for what I was told would have cost me approximately $9-10,000. Oil leak reappeared in 2023 @44,657 miles (less than 12,000 since first leak) caused again by broken aluminum bolts in the lower, upper oil pan, and timing cover. Repair done this time by independent shop at a cost of $6,865.70.”

“car had a smell of gas diesel fumes inside cabin from air conditioning system. number of oil leaks over the years as well. now car at dealer for repair over 10 month. not fixed yet. number of problem with same diesel engine on line, even article i found . car was sold as CPO , it was new unregister, but they guaranteed us there will be no emission problems or leaking with this car. now warranty almost over Nov 2023 , and I will get a defective car back maybe... after warranty will expire! more importantly a car that leaks oil or diesel and smells inside the cabin from that.”

“my car had a problem in the hybrid part, before doing the diagnosis they said 3 different problems, when they gave me the diagnosis they said they didn't know what it was but that to begin with “it could be “ the components $13,000 to fix. but my car is under the 8 years or 100,000mls hybrid system warranty, so i contacted porshe headquarters and they said the car was out of warranty. so i called porche in Fremont (where they have mentioned the warranty on their website) and 3 people confirmed that the car is under warranty by VIN n. I called headquarters again and they said they needed this guarantee in writing. So when I called Fremont again 3 weeks later they said the car is not under warranty, meaning they changed the whole conversation within 3 weeks. I already confirmed it on CARFAX and I am under warranty but I never received any responses to emails or phone calls they are ignoring me because they don't want to assume the warranty. Fremont confirmed that I had 6 months or 19,000 miles until the warranty expired, and strangely 3 weeks later that warranty no longer appears in their system. in my opinion they don't know what the car has and they are trying…”