2015 Porsche Panamera S E-Hybrid failure

Hi, I know this sounds basic, have you checked the 12 volt battery? If not fully charged will not turn on the High voltage system. Also It might be helpful to know what the other repair was for the Check Engine light.

Yup. Sorry, I should've mentioned that. The 12V battery was replaced with a known good and the key fob battery was replaced as well. When the ignition is turned on, all accessories light up as normal.

You should test the service battery as low voltage can cause all types of false codes. Where the vehicle sat for a couple of days there may be a parasitic draw.

I have not yet performed a parasitic draw test. The client did not mention any symptoms regarding any voltage issues and we had the car for a couple days before getting to work on it and had no problems starting it to move it in and out everyday. I even drove the car 10+ miles in order to set emissions monitors. We were looking into an issue where the hatch would open by itself if the vehicle

make sure the 12 v babtery is fully charge , than clear the codes on every computer bucause this hybried vehicle when they a a code on hc ecu or hv batery ecu they disable the starting sytem even if you fix the problem , until you clear the codes funtions are restored

Which module are these codes from. One of your codes say that the High voltage system is deactivated do to malfunction. Is the autel able to test the Hybrid control unit? I would check the 12 volt service plug near the 12volt battery make sure it is installed correctly.

I'm in agreement with Joel Navarro. You need to make sure the 12V battery is fully charged, then clear all faults (at least for the modules that the Autel can access). Some systems don't come back to life until you clear the faults. These Porsche vehicles can be difficult to diagnose even with the factory scan tool, so only having the Autel would worry me. Anytime you are scanning a German

Yeah totally with you Steven and everyone here helping me cover the basics. I had the same faults with my AutoLogic assist plus, the battery showing 12+ volts while performing a quick test/quick clear. Both with the autel and assistplus with no difference. The faults shown are from the DME. Is there a 12v battery adaptation reset or registration that is needed? I used my autel because it was

Our shop has the Autologic Assist Plus, and the few Porsche vehicles I tried it on, I didn't like it. Same thing with Snap-on and Durametric. The only scan tool I trust for Porsche is the factory scan tool. I do use the Durametric for oil change resets, though. If your Piwis is up to date enough for that vehicle, then that's what I would use. You said the faults that you posted we're from the

Considering the hybrid battery module is requesting the warning lights on, I would want to know what codes are stored in the hybrid battery module. Was the hybrid system accessed in anyway during the initial work? Could the battery service disconnect or some other hybrid component's connectors not be seated properly? If so the high voltage interlock system would be open preventing the high

Going through the little I have. Hope this helps