Abs only sometimes work
If you are just starting the car after its rested for like 4hrs the abs system works fine, in addition the abs light won't be on. However, if you shut the car off and the restart it within an hour or two the ABS light will be on, plus the system won't work. It does not matter if initially the cars been running for 6hrs or 2 minutes, after shutting off and restarting it the abs system will shut down.