If a BMW 3 series, i.e F35 fails to open trunk, in most cases this is caused by data loss in the CPU MPC5515 of the REM (Rear Electronic Module).
You can read the CPU data, modify and write the modified data to repair the REM module.
Both Xhorse VVDI Prog and Multi Prog will read and write the module.
BMW REM module wiring diagram to Xhorse VVDI Prog/Multi Prog
REM=REAR ELECTRONIC CONTROL MODULE
MPC5515
CPU ID=1D6011181D10D107
Need to add a 100-120 ohm resistor between VCC and JCOM!!!
In VVDI Prog software, select Microcontroller -Motorola MPC55 series- MPC5515.
Multi prog works as well.
