Hi,
before i post the long result, try to put your complete post into chatgpt and wonder what you are getting for an answer
I would bet your module is not from an XC40.
Here is my prompt: https://chatgpt.com/share/69b02ec8-c0e4-...beea86dc4a
a bit of it...
I think you need to find out more about your specific module.
Because the warning happens in both deployed and retracted states, the module is probably seeing no safety signal at all, not just the wrong position.
That strongly suggests wiring or switch failure, not coding.
Best Regards JOS
before i post the long result, try to put your complete post into chatgpt and wonder what you are getting for an answer
I would bet your module is not from an XC40.
Here is my prompt: https://chatgpt.com/share/69b02ec8-c0e4-...beea86dc4a
a bit of it...
Quote:TRW Automotive produced several versions of the Volvo retractable towbar module used in vehicles like the Volvo XC40.
Some modules expect different switch logic:If the mechanism and TRW module are from different model years, the module may think the signal is invalid → triggers B14FB01.
- Single safety switch
- Dual redundant switches
This happens frequently when mixing parts from:
- XC40
- XC60
- XC90
- V60
The car only checks the towbar safety state dynamically while moving.
When stationary, the system assumes it’s safe to deploy/retract, so it suppresses the warning.
This behaviour is normal for Volvo.
I think you need to find out more about your specific module.
Because the warning happens in both deployed and retracted states, the module is probably seeing no safety signal at all, not just the wrong position.
That strongly suggests wiring or switch failure, not coding.
Best Regards JOS