Cayenne Hybrid Shakes: Throttle Valve Troubles?

Hey there, I experienced similar issues with my 2017 Porsche Panamera 4 E-Hybrid last summer. The symptoms you're describing sound exactly like what I went through, the shaking at idle and jerky acceleration were spot on. Initially thought it was the throttle body too, but it turned out to be the accelerator pedal module that was failing. Took it to the Porsche dealer since it was pretty serious, these symptoms can get worse quickly and potentially leave you stranded. The technician found that moisture had gotten into the electronic components of the pedal module, causing erratic signals to the engine management system. They had to replace the entire pedal assembly and recalibrate the system. The fix was fairly straightforward once they diagnosed it correctly, but you definitely want someone who knows Porsche hybrids specifically. These cars have complex electronic systems that need proper diagnostic equipment. I'd strongly suggest finding a certified Porsche dealer or a specialized German car shop for this issue. Hope this helps!

Thanks so much for sharing your experience! That's really helpful to know it was the pedal module in your case. I was worried I'd have to deal with a major engine issue. Do you remember roughly how much you ended up paying for the whole repair? Also, has everything been running smoothly since then, or have you noticed any other quirks?

Hey again! Good news, I can give you a precise update on this! After seeing my mechanic, it turned out your hunch about the throttle valve was spot on, and they found that combined with a faulty accelerator pedal module, exactly what was causing those annoying symptoms you described. The whole thing set me back 265€, which honestly wasn't as bad as I feared. Since getting it fixed, my Panamera's been running like a dream, no more shaking at lights or jerky acceleration. It's been about 8 months now, and I haven't had a single issue. The car feels as smooth as it did when I first got it. The throttle valve issue can be pretty scary when it happens, but once it's properly diagnosed and fixed, you shouldn't have any more problems. My advice? Don't wait too long to get it checked out like I initially did, these things can get worse if left alone. Let me know if you have any other questions! Happy to help a fellow Porsche owner out.

Hey! I really appreciate all your help and advice! Just wanted to update you on what happened. I finally took my Cayenne to a certified Porsche dealer last week. You were right about not waiting, glad I didn't put it off any longer. Turns out it was indeed a combination of issues with the throttle valve and pedal module, just like in your case. The whole repair cost me around $1,200, which was actually less than I'd been bracing myself for. The service was super professional, and they even gave me a loaner car while mine was being fixed. Got my car back yesterday, and wow, what a difference! No more trembling at stops, and the acceleration is butter-smooth now. Really feels like I got my luxury car back. Thanks again for encouraging me to get it checked out at a proper Porsche dealer, definitely the right call. Saving this mechanic's contact info for sure, way better than my previous experiences. Sometimes paying a bit more for qualified service is totally worth it! Take care!