Lincoln Navigator Warning Lights: What They Mean

Red: stop or act now

Brake indicator

Parking brake is applied, or brake fluid level is low or the brake system has a fault. Braking performance may drop significantly.
What to do: If lit while moving, make sure the parking brake is released. If it still shows, see an authorized dealer. PDF page 244

Amber: check soon

ABS indicator

Anti-lock braking system malfunction. Normal braking continues but without the anti-lock function. Flashing at any time also indicates a fault.
What to do: See an authorized dealer. Have the system checked if it does not light at ignition on or if it flashes. PDF page 244

Other warnings and indicators

TPMS malfunction indicator

Tire pressure monitoring system is not working properly. The telltale flashes about one minute, then stays on; low tire pressure may go undetected.
What to do: Check the telltale after replacing tires or wheels to confirm they allow the system to work properly. PDF page 486

Passenger airbag status indicator

The off lamp shows the front passenger airbag is disabled; the on lamp shows it is enabled.
What to do: If an adult sits there and off lamp is lit, have them sit upright for two minutes; otherwise use the rear seat. PDF page 69

Door ajar indicator

Shows a door is open. Lit with the driver door closed, or unlit with it open, signals a fault affecting automatic return to park.
What to do: See an authorized dealer if it behaves incorrectly. PDF page 224

Summarized in our own words from the 2026 Lincoln Navigator owner's manual (AI-assisted; every light name was matched against its cited page 2026-10-18). Your vehicle may not have every light, and other years can differ. A red warning that stays on usually means stop safely and check: your manual has the final word.