Rear Seatbelt alert programming in Forscan

[Matthias]

Hi,

I am new to the forum so excuse problems with the post that may arise.

I recently got a used (20k miles) 2021 navigator that seems to have rear seatbelt monitor disabled. You can't find a screen with seat occupation status on the dashboard. I connected the car to forescan and found the option disabled in IPC configuration. I selected 2-2-3 config and uploaded it to the car. The dashboard panel with seatbelt status is now visible, but all rear seats (2-3) are orange with questionmark and popup appears saying that rear seatbelt monitor needs to be serviced. Am I missing something? Is there another thing that needs to be specifically reconfigured for it to work? Or the entire system in the car is damaged?

 

Best regards,

Matt

[Matthias]

Small edit: I did change settings in RCM module as well as for some reason it had second and third row seatbelt monitor sensor as "not present". Changed it to proper "present" option but the system still does not work.  When the aformentioned was turned on, I am not getting error for all rear passenger sensors:

 

Code: B140F - Third Row Passenger Side Seatbelt Sensor Additional Fault Symptom (:13): - Circuit Open Status (-0B): - DTC Present at Time of Request - Malfunction Indicator Lamp is Off for this DTC Module: Restraint Control Module Freeze Frame #1: -EVENT_TIME: 85111174 s (Thu May 08 11:26:50 2025) - Event time -TOTAL_DISTANCE: 59549 km - Total Distance Freeze Frame #2: -EVENT_TIME: 85111296 s (Thu May 08 11:28:52 2025) - Event time -TOTAL_DISTANCE: 59549 km - Total Distance (5 errors like this total)

 

Wires seem intact, heating works, small light in seat buckle also works no problem. I doubt all 5 sensors are broken?

Edited May 8 by Matthias