107 Usually means you have a faulty k10 main contactor or faulty a5 card
first try taking the contactor apart and cleaning it as this is sometimes all it takes
to retify the problem. Also check seat switch wires as these sometimes get cut through where they go into the seat.

you must to check, first ,the fuse F62 behind the traction motor, check too the principal contactor and the wires to his coil.
When the contactor K10 is on, the A5 card must receive (+) at pin 808.