Amber
The colour helps indicate urgency, but exact behaviour can vary by manufacturer.
Dashboard Warning Light
Key Not Detected
Smart key is not detected, is out of range, or has a weak battery. The usual first step is: Bring key inside/closer and try spare or replace key battery.
Varies by state
Use this as a quick triage label before confirming in your owner manual.
Bring key inside/closer and try spare or replace key battery
Check the matching manual page for your exact brand, model and year when possible.
What it usually means
Smart key is not detected, is out of range, or has a weak battery.
What to do next
Bring key inside/closer and try spare or replace key battery. If the vehicle feels unsafe, stop in a safe place and arrange professional inspection.