Red/Amber
The colour helps indicate urgency, but exact behaviour can vary by manufacturer.
Dashboard Warning Light
Immobilizer / Security
Flashing while parked may be normal; staying on or a no-start can indicate an immobilizer fault. The usual first step is: Try the correct/spare key; service if vehicle will not start.
Varies by state
Use this as a quick triage label before confirming in your owner manual.
Try the correct/spare key; service if vehicle will not start
Check the matching manual page for your exact brand, model and year when possible.
What it usually means
Flashing while parked may be normal; staying on or a no-start can indicate an immobilizer fault.
What to do next
Try the correct/spare key; service if vehicle will not start. If the vehicle feels unsafe, stop in a safe place and arrange professional inspection.