Ford E-Series Warning Lights: What They Mean

Red: stop or act now

Brake System Warning Lamp

Parking brake is applied with ignition on, or the vehicle has a brake fault or low brake fluid level.
What to do: If lit while moving, make sure parking brake is off. Have the vehicle checked as soon as possible if it stays on. PDF page 66

Other warnings and indicators

Engine Oil Pressure Warning Lamp

Lit while the engine runs, it indicates a malfunction. Lights briefly at ignition on as a check.
What to do: Do not continue driving. Stop safely, switch engine off, check oil level; if oil is sufficient, have the vehicle checked. PDF page 169

Engine Coolant Temperature Warning Lamp

Engine is overheating when it lights while the vehicle is moving.
What to do: Stop as soon as safe, switch the engine off, and have the vehicle checked as soon as possible. PDF page 67

Battery

Lit while driving, it indicates a charging system malfunction.
What to do: Switch off unnecessary electrical equipment and have an authorized dealer check the system immediately. PDF page 66

Airbag Warning Lamp

Malfunction if it does not light at ignition on, keeps flashing, or stays on with the engine running.
What to do: Have your vehicle checked as soon as possible. PDF page 66

Anti-Lock Brake System Warning Lamp

Lit while driving, the ABS has a malfunction. Normal braking continues without the anti-lock function.
What to do: Have your vehicle checked as soon as possible. PDF page 66

Service Engine Soon

Emission control system malfunction detected. Flashing means engine misfire may be occurring and could damage the catalytic converter.
What to do: If flashing, avoid heavy acceleration and deceleration and have the vehicle serviced immediately. If steady, service at first opportunity. PDF page 67

Powertrain Malfunction/Electronic Throttle Control

The system has detected a powertrain fault.
What to do: Have an authorized dealer check the system as soon as possible. PDF page 67

Low Fuel Level Warning Lamp

Fuel level is low when lit while driving.
What to do: Refuel as soon as possible. PDF page 67

Direction Indicator

Left or right turn signal or hazard flasher is on. Staying on or flashing faster suggests a burned-out bulb.
What to do: Check for a burned-out bulb if the indicators stay on or flash faster. PDF page 66

Cruise Control Indicator

Cruise control system is switched on. PDF page 66

Headlamp High Beam Indicator

Headlamp high beam is on. PDF page 67

Parking Lamps On

Parking lamps are switched on. PDF page 66

Summarized in our own words from the 2025 Ford E-Series 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.