Step 5: Connecting cable harness with the car brain – ECU (Electronics Control Module)
The ECU is located above the driver's paddle on the left. Unscrew the two screws and remove the plastic cover. The job is quite awkward and difficult, so get ready for acrobatics!
Below you can see ECU reception positions.
Lightly pull the red plastic to the right to unlock the slots. There is an AUF mark -> there.
Then unclip the B1 and F3 positions by pressing the corresponding clips. The violet sensor cable fits into position F3, in which there is a violet-white color cable, and the blue cable goes to the B1 position of the brain to identify the reversion, in which there is a blue-black color cable. Because the seats are down, you need to strip the cables a little, and then connect them with the cables in the correct sockets.
Finally, with the soldering iron melt a little bit of the cloth on the joints and, once you put an insulating tape, you grab both cables with a tie so they do not hang.
