996 Porsche Dies While Driving: Alternator Warning Signs

Hey there, I had almost identical issues with my 2006 Porsche Cayman S last summer. The symptoms you're describing are exactly what I experienced, unusual stalling, electrical gremlins, and dashboard lights going crazy. It turned out to be a failing generator (alternator), and yes, it was pretty serious since it could've left me stranded anywhere. The tricky part with these symptoms is that they get progressively worse. In my case, the battery would get drained because the generator wasn't charging it properly. Got it fixed at an independent Porsche specialist, took them about 4 hours to replace it. They also checked the battery and voltage regulator while they were at it. My advice? Don't wait too long, a failing generator can damage other electrical components in your car. Find a reputable Porsche specialist who can properly diagnose and fix it. These cars need someone who knows what they're doing. Hope this helps!

Thanks for sharing your experience! That's exactly what I was worried about. I'm planning to get it checked this week actually. Do you remember roughly how much you ended up paying for the generator replacement? Also, has everything been running smoothly since the fix, or have you noticed any other electrical quirks?

Hey again! Yes, absolutely, I can tell you all about the costs and aftermath. I got the generator fixed about 8 months ago, and it cost me 960€ including labor. Honestly, while it wasn't cheap, it was totally worth it because the car's been running like a dream since then. All those annoying electrical issues completely disappeared, no more dimming lights, no unusual stalling, and the dashboard is behaving perfectly normal now. The mechanic did a thorough job and fixed the faulty generator, and I haven't had a single electrical problem since. It's such a relief not having to worry about getting stranded somewhere! Just make sure you go to a proper Porsche specialist, they might be a bit pricier, but they know these cars inside and out. Trust me, once you get it fixed, you'll wonder why you didn't do it sooner. The peace of mind is worth every cent. Let me know how it goes with your car!

Thanks so much for the detailed info! I actually just got back from the mechanic today, and you won't believe it, it was exactly what you said. The generator was shot, and they quoted me around 1000€ for the full repair. I bit the bullet and got it done right away. They finished it in about 5 hours, and wow, what a difference! The car feels completely different now, starts up strong, no more flickering lights, and that annoying unusual stalling is gone. The mechanic also did a quick check of the whole electrical system just to be safe. I'm so glad I asked here and got your advice. You were right about going to a Porsche specialist, they knew exactly what they were doing. It's such a relief to have this sorted out. Thanks again for helping me avoid any more headaches with this! Catch you around!