Red
The colour helps indicate urgency, but exact behaviour can vary by manufacturer.
Dashboard Warning Light
Battery / Charging
Battery or alternator charging issue. The usual first step is: Stop/check charging system.
Stop safely
Use this as a quick triage label before confirming in your owner manual.
Stop/check charging system
Check the matching manual page for your exact brand, model and year when possible.
What it usually means
Battery or alternator charging issue.
What to do next
Stop/check charging system. If the vehicle feels unsafe, stop in a safe place and arrange professional inspection.