Urgency: Low
Security / Anti-Theft Light
This is usually informational. Address it at your convenience.
What the Security / Anti-Theft Light Means
The security / anti-theft light on a your car normally blinks to show the alarm and immobiliser are armed. If it behaves oddly or blocks starting, it can indicate a key recognition or alarm system fault.
Common Causes
- Normal armed-state indication
- Weak key fob battery
- Faulty bonnet or door sensor triggering the alarm
- Immobiliser antenna fault
- Low vehicle battery
How to Fix It
- Replace the key fob battery
- Lock/unlock with the key in the door to reset the alarm
- Check the bonnet and door switches for false triggers
- Test the vehicle battery
- Have the alarm/immobiliser module scanned if it persists