AFS Sensor adjustment

[OldStoat]

I've had to replace the sensor on the rear suspension that manages AFS.

I'm fairly confidant that the sensor is doing its thing correctly, however the AFS light still flashes.

1) Is it necessary to delete the error code via OBDII to correct this?

2) Is it part of an MOT?

3) Is there a recommended way of adjusting the adjustment rod?

[ColinBarber]

1 - no, it would clear itself after a maximum of three ignition cycles, if not immediately.

Was the sensor faulty? That is only used for vertical alignment of the lights, if there is a problem with the left/right steering then the problem is elsewhere. Ideally you need to know the error code to diagnose the problem.

 

2 - self levelling must work and beam alignment must be correct. The warning light because of the swivel action not working shouldn't be a failure.

[OldStoat]

36 minutes ago, ColinBarber said:

1 - no, it would clear itself after a maximum of three ignition cycles, if not immediately.

Was the sensor faulty? That is only used for vertical alignment of the lights, if there is a problem with the left/right steering then the problem is elsewhere. Ideally you need to know the error code to diagnose the problem.

 

2 - self levelling must work and beam alignment must be correct. The warning light because of the swivel action not working shouldn't be a failure.

Thanks Colin! The sensor itself wasn't faulty I don't think, but the adustment rod had broken - I'd asked someone else to do it and they wanted to fit a replacement item - fair enough. Now I think it is a couple of turns on the adjuster away from working - but idk!

[ColinBarber]

I'd disconnect the Battery for 30 seconds, reconnect and then drive for a bit above 12 mph to recalibrate the AFS ECU.

You shouldn't have to adjust the rod if you have it at the same length as the old one - the fine adjustment would have to be done on the headlights.