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Originally Posted by Everest
I can tell you what happened.. The vehicle would start,, I would put it into reverse, and the ICE would die. I would start getting errors on the display. It would say drivers door ajar, passenger door ajar, etc.... even service 4x4 soon, then it would say to come to a safe stop. At that point all would go dead... It would do this everytime....
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The ONLY source of reverse drive is the hybrid battery pack, there is no "reverse" in the gearbox.
Also the 12 volt accessory battery is kept charged by a DC-DC down converter.
So if the hybrid battery were to fail the 12 volt battery would soon follow, thus all of the diagnostic lights.
Shame you had to move it in reverse in order to drive to the dealer.
Puzzling that the ICE would start each time in that this requires that the hybrid battery be available to run "MG1" as a starter motor. But I could see that a low charge of the 12 volt battery as being the root cause of all of the above.
More likely therefore a DC-DC down converter failure.