Amber
The colour helps indicate urgency, but exact behaviour can vary by manufacturer.
Dashboard Warning Light
Water in Fuel Filter
Water has been detected in the diesel fuel filter. The usual first step is: Avoid prolonged driving; drain/service promptly per manual.
Service required
Use this as a quick triage label before confirming in your owner manual.
Avoid prolonged driving; drain/service promptly per manual
Check the matching manual page for your exact brand, model and year when possible.
What it usually means
Water has been detected in the diesel fuel filter.
What to do next
Avoid prolonged driving; drain/service promptly per manual. If the vehicle feels unsafe, stop in a safe place and arrange professional inspection.