[ChrizLoud]

Hi!

Im retrofitting comforts seats in a LCI E61.
The seats came from Pre-LCI E61.


Wired up power, ground, and Canbus.

With only drivers seat connected all is good (FAS-module).
It can be controlled in INPA etc.

Connecting the passanger seats (BFS-module) gives problems.

BFS does not show up in UIF and both seats is controlled by FAS.

If i only connect passanger seats same thing happens. There is no BFS module.. only FAS.


Probably both modues is coded as FAS. I do not know how this happend.
How do i convert FAS to BFS module.

Can i change ECU-adress on the module? 
Trying to code or update module on BFS Ecu-adress gives no communication.

[Vojno]

The seat module knows where he is from the connection in the connector.
In the passenger site in the connector (ex.X13990) need pin 2 to GND!!!
From here the module knows that he is BFS.

[Hoborg]

Exactly , modules are the same but difference is in wiring.

[ChrizLoud]

Did the extra ground and it became a BFS.. Now everything is OK! Thank you!