What it can mean
The vehicle may continue briefly on stored battery energy, then stall or fail to restart.
What to do next
- Reduce unnecessary electrical loads.
- Stop safely if steering, cooling or other warnings appear.
- Test the charging system, battery and drive belt where applicable.
Possible causes to test
- Alternator or DC converter fault
- Drive belt failure
- Loose or corroded connection
- Battery or control-system fault