2017 Porsche Cayenne problems

“The contact owns a 2017 Porsche Cayenne. The contact stated the vehicle experiencing a catastrophic powertrain and electrical failure. The vehicle experienced severe thermal overloading behind the dashboard, and the radio head unit was excessively hot causing chrome trim around the screen to melt. The CAN bus was corrupted, causing the instrument cluster to display inaccurate information including 30 PSI and information that there were wheels on the vehicle. Additionally, the PCM malfunctioned and ceased Bluetooth connectivity and displayed system status logs indicating up to 7 drivers. The failure spread to the critical driving and safety systems. The contact stated while driving, the vehicle shifted to neutral unexpectedly. While inserting or removing the key from the ignition cylinder, the vehicle violently jolted back and forth. Most critically, the electrical cross-firing had compromised the automated driver assist features. The contact stated that without warning, the steering wheel violently jerked, and the vehicle drove off the roadway. The GPS became inoperable. The contact disconnected and removed the telematics module; however, the failure persisted.…”

“The RIGHT FRONT HEADLIGHT has experienced recurring water/moisture intrusion and has now completely failed and no longer illuminates. This creates a safety concern because the vehicle has substantially reduced forward illumination for nighttime driving. On September 23, 2024, an authorized Porsche dealer performed headlight-related warranty work. The dealer’s repair record states that both headlights were removed and the modules were swapped side-to-side during diagnosis. On September 30, only seven days later, I photographed substantial condensation/water inside the right front headlight. On October 1, 2024, I reported the continuing condition to my Porsche service advisor. In written communications, the advisor asked whether the affected light was the right side. I confirmed that it was. He stated that the condition was “not normal” and that he would order the headlight. He subsequently confirmed in writing that the right headlight had been ordered. I continued reporting the problem. A November 27, 2024 dealer repair order specifically documents: “CUSTOMER STATES-RIGHT HEADLIGHT IS HOLDING WATER.” The headlight was not replaced because the moisture reportedly…”

“Case Number: 1170739 – Additional Evidence Submission I would like to provide an additional document for Case #1170739. The manufacturer (Porsche Cars North America) stated in writing that the vehicle is “safe to drive even with warning indicators illuminated,” but in the same communication offered a rental vehicle if I found this “inconvenient.” These two statements cannot logically coexist, and they raise concerns that the manufacturer may be minimizing or mischaracterizing a potential safety-related defect. Furthermore: The warning indicators involve the coolant and fuel systems of an E-Hybrid model, which may be connected to thermal management and combustion-related safety. The vehicle remained in the dealer’s possession for an extended period during repeated repair attempts. During a visit, I found the hood partially open while the vehicle was being stored long-term, raising questions regarding proper safety and storage protocols. Additional system warnings appeared after prolonged non-operation, suggesting possible deterioration related to improper storage or incomplete diagnostics. I respectfully request NHTSA’s assessment of whether it is appropriate…”

“I am reporting a series of safety-related defects involving the electrical, cooling, and fuel systems of my 2021 Porsche Cayenne E-Hybrid. The vehicle was initially brought to the authorized Porsche dealership due to an electrical system error, and the dealer kept the vehicle for an extended period. After approximately five months, the vehicle was returned to me without a clear explanation of the root cause or details of the repair. The very next day after receiving the vehicle, a coolant temperature warning appeared while driving, indicating abnormal engine overheating. This created an immediate safety hazard, as overheating can lead to sudden engine failure, loss of power, or a potential fire risk. I returned the vehicle to the dealership again for further repairs. Afterward, another serious issue occurred: because this is a hybrid vehicle, I went to refuel, but the fuel door would not open, and a fuel system error warning appeared again. This made the vehicle unsafe to operate, especially while already on the road. Due to these repeated failures, I was required to tow the vehicle multiple times. These problems — electrical malfunction, coolant overheating…”

“the piece of leather trim sit on top of dash panel below the windshield that cover the airbag shrink and peel off the main dash. The passenger air bag might not deploy properly in the event of frontal collisions because of a loose piece of leather cover it.”

“The contact owns a 2017 Porsche Cayenne. The contact stated that the vehicle was hacked. The contact stated that while driving at an undisclosed speed, the driver's assistance safety features malfunctioned, causing the vehicle to swerve despite the driver's efforts to drive straight. Infotainment settings confirmed that the Porsche Doppelkupplung (PDK) system was engaged. Additionally, the message "External Usage External Equipment External Drivers remove the features" was displayed, and the cruise control was unintentionally engaged with messages for "Trailer," "Slippery Changing Max Settings," "Navigation Off," "Road feature Off," "Risk of an Accident," and "Pull Over, remove the key from the ignition and reset vehicle". The contact stated that while driving, the vehicle unintentionally shifted into Drive and Neutral at the same time. The contact stated that on several occasions, the vehicle failed to stop while depressing the brake pedal, requiring the driver to pull over to the side of the road and allow the vehicle to roll to a stop. Other failures included unintended engagement of the windshield wipers and heater. Per the owner's manual, the contact…”