03-21-2023, 01:29 PM
Some information on the "ABS Clear Config" function and what it means when changing configuration with OrBit.
Technically the ABS Clear Config is "Clear ABS System variant coding" in Volvo language. It is a process that is run on the brake control module (BCM or BCM2), it clears the configuration of the ABS system itself. This causes the ABS system to "reconfigure" itself, which is useful for changing configuration like we do with OrBit, this makes the ABS/ESC system "take" the new configuration change you have made. It's a necessary step for some configuration changes, like enable/disable Pilot Assist and Adaptive Cruise Control (PA/ACC). Until the ABS Clear Config is run, the brake system will not "take" the new configuration from the car.
The config items that require the ABS Clear Config is any setting that relates to the ESC and ABS system: Cruise Control, TPMS, Collision Safety systems, anything to do with brakes, wheels and tires.
OrBit knows a list of items that need ABS Clear Config, and it will run that automatically in post-programming if you change those items. For most cases that is all you need to know! You change config, OrBit writes it and the ABS Clear is run and everything works. Also when you run the "Restore OEM" process, the ABS Clear will be run in post-programming automatically, as we don't know what you could have changed that we revert when restoring the OEM configuration, so OrBit runs it in post-programming in that process as well.
Things can happen though, the ABS Clear Config process failed in post-programming, or you see some problems with the car after config change. Here is what to do in those cases to troubleshoot:
If Write config is successful, but screen log in OrBit shows "ABS Clear config failed":
If Write config is successful but the car now has many messages in the driver display (DIM) with new config:
Technically the ABS Clear Config is "Clear ABS System variant coding" in Volvo language. It is a process that is run on the brake control module (BCM or BCM2), it clears the configuration of the ABS system itself. This causes the ABS system to "reconfigure" itself, which is useful for changing configuration like we do with OrBit, this makes the ABS/ESC system "take" the new configuration change you have made. It's a necessary step for some configuration changes, like enable/disable Pilot Assist and Adaptive Cruise Control (PA/ACC). Until the ABS Clear Config is run, the brake system will not "take" the new configuration from the car.
The config items that require the ABS Clear Config is any setting that relates to the ESC and ABS system: Cruise Control, TPMS, Collision Safety systems, anything to do with brakes, wheels and tires.
OrBit knows a list of items that need ABS Clear Config, and it will run that automatically in post-programming if you change those items. For most cases that is all you need to know! You change config, OrBit writes it and the ABS Clear is run and everything works. Also when you run the "Restore OEM" process, the ABS Clear will be run in post-programming automatically, as we don't know what you could have changed that we revert when restoring the OEM configuration, so OrBit runs it in post-programming in that process as well.
Things can happen though, the ABS Clear Config process failed in post-programming, or you see some problems with the car after config change. Here is what to do in those cases to troubleshoot:
If Write config is successful, but screen log in OrBit shows "ABS Clear config failed":
- Run it manually, via the "ABS Clear Config" button in OrBit
If Write config is successful but the car now has many messages in the driver display (DIM) with new config:
- If you have many messages in the DIM related to the ESC/ABS such as "ESC System disabled", "Parking Brake Unavailable", "Park Assist Temporarily Unavailable" you may have a configuration that needs to have the ABS Clear Config run
- Run the ABS Clear Config manually, clear codes, and check the car again
- Disconnect OrBit, turn the car off, then start the car up as normal to confirm if the messages go away
- If the messages do not go away, even after you have run "ABS Clear Config" successfully, you may have changed a configuration item that is not compatible with the car. (Example, setting the PA/ACC system level "too high" to a level the car does not support)
- If you are not able to resolve the issue by running ABS Clear Config, you can try correcting your config settings changes you made, and write new config with OrBit to try to figure out the incompatible setting and find what works for your car.
- You can always run the "Restore OEM" process to change the config back to original, which should also run the ABS Clear Config for you, to restore the systems to original working status.