So it looks like my 12v battery is in its death throws today on my April 2018 M3 (50,340 miles ). I received no warning messages (apparently like many other owners).
I drove home from work this afternoon and went to leave with my wife 2 hours later. The drivers side door opened, however, the passenger door wouldn't. The MCU was dark and the controls were non-responsive. The foot well lights were flickering. I attempted to open the frunk, however, the app no longer was able to communicate with the car. I did notice the sulfur smell so I was pretty certain this was the 12v battery.
I am like "I am ready for this". I grabbed my battery jumpstart pack and proceeded to pull off the tow hook cover. I attach it pack to the Pos & Neg wires and get no response from the frunk. I tried a fresh 9v battery as well, however, same results...no sound or action from the latch. What I do hear is this wind-up sound (repeatedly)(New video by Michael Kurzdorfer). I did disconnect the high voltage connector under the rear passenger seat.
Any other clues? Is it possible that the battery has "just enough" energy that it won't release the Frunk using the external power...Or is it possible there is something wrong with the wiring from the tow hook to the frunk latch?
I drove home from work this afternoon and went to leave with my wife 2 hours later. The drivers side door opened, however, the passenger door wouldn't. The MCU was dark and the controls were non-responsive. The foot well lights were flickering. I attempted to open the frunk, however, the app no longer was able to communicate with the car. I did notice the sulfur smell so I was pretty certain this was the 12v battery.
I am like "I am ready for this". I grabbed my battery jumpstart pack and proceeded to pull off the tow hook cover. I attach it pack to the Pos & Neg wires and get no response from the frunk. I tried a fresh 9v battery as well, however, same results...no sound or action from the latch. What I do hear is this wind-up sound (repeatedly)(New video by Michael Kurzdorfer). I did disconnect the high voltage connector under the rear passenger seat.
Any other clues? Is it possible that the battery has "just enough" energy that it won't release the Frunk using the external power...Or is it possible there is something wrong with the wiring from the tow hook to the frunk latch?