Citroen C1 Dashboard Warning Lights Meaning

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rebbeca jones

Understanding your Citroën C1’s dashboard warning lights is essential for your safety and for avoiding serious damage or costly repairs. These lights alert you to critical and non-critical issues, so knowing what each means helps you act promptly and appropriately.

Citroen C1 Dashboard Warning Lights

Red Warning Lights (Stop Immediately)

Engine Oil Pressure

Oil Pressure Warning Light

Low oil pressure or loss detected. Stop the car, switch off the engine, check oil level, and seek assistance if needed.

Engine Coolant Temperature

Engine Coolant Temperature Warning Light

The engine is overheating. Stop the vehicle and let the engine cool down before continuing your journey.

Brake System Fault

Brake Failure Warning Light

Indicates brake fluid is low or a system malfunction. Pull over safely, do not continue driving, and get professional help.

Battery Charge Fault

Battery Warning Light

Battery not charging. Electrical systems may fail, stop as soon as it is safe and check the charging system.

Airbag or SRS Fault

Airbag Deployment Warning Light

A problem is detected in the airbag or seatbelt system. Airbags may not deploy in a crash—stop and consult a specialist.

Seatbelt Reminder

Seatbelt Warning Light And Buzzer

A seatbelt is not fastened while driving. Buckle up immediately for safety.

Power Steering Failure

Power Steering Warning

Indicates steering may become heavy. Stop when safe and seek immediate assistance.

Door Ajar Indicator

Doors Open Warning Light

A door is not fully closed. Stop and check all doors are shut properly.

Brake Pad Wear

Brake Pads Warning Light

Critical brake pad wear detected. Stop and have pads checked and replaced immediately.

Master Warning (Triangle with Exclamation)

Master Warning Light

A serious fault requiring urgent attention. Stop safely and check the information display or owner’s manual.

Transmission Temperature

Powertrain Malfunction Light

Transmission is overheating. Stop driving, allow system to cool, seek attention if light stays on.

Parking Brake

Parking Brake Light

Parking brake is engaged or fault in the system. Release brake, or if faulty, stop and call a mechanic.

Child Safety Lock/Seat Fault

Child Safety Lock

Warning of an issue with child safety seat or lock. Stop and investigate the cause.

Anti-lock Braking System (ABS) Critical Failure

ABS

ABS has failed. Standard braking remains but stability and stopping distance may be affected; drive with extreme caution.

Brake Fluid Level Low

Brake Fluid

The brake fluid is below safe limits. Do not continue traveling—refill or call for assistance.

Yellow/Amber Warning Lights (Action Required Soon)

Check Engine (Engine Management)

Check Engine Warning Light

The engine management system has detected an issue. Engine power may be reduced, schedule diagnostics promptly.

Tyre Pressure Monitoring System (TPMS)

Tyre Pressure Warning

One or more tyres underinflated. Check and adjust all tyre pressures as soon as possible.

Traction Control/ESP/ESC

Traction Control Warning Light

Indicates the traction or stability control is active or has a fault. Reduced stability, drive cautiously and have system checked.

Glow Plug (Diesel Only)

Glow Plug Warning Light

Glows during ignition pre-heat. If it remains after startup, there may be a failure—arrange diagnostics soon.

Fuel Filter Warning (Diesel Only)

Fuel System Warning

Possible water in filter or blockage. Replace or service fuel filter promptly.

Service/Maintenance Reminder

Service Due Warning Light

Routine service due or minor fault detected. Book your car in for servicing.

Engine Auto Start-Stop

Start Stop System Warning

Stop/start feature is unavailable or malfunctioning—typically not urgent but arrange service if persistent.

DPF Warning (Diesel Particulate Filter)

Diesel Particulate Filter (DPF)

DPF is clogged and needs regeneration. Drive at a steady speed to clear, or book service if the light stays on.

Fuel Level Low

Low Fuel Levels

Fuel is running low. Refuel at the next available station.

Low Washer Fluid

Washer Fluid Level Warning

Washer fluid is almost empty—top up when possible.

Key Not Detected/Electronic Key Issue

Key Fob Battery Warning Light

Key is out of range or has a battery issue. Replace battery or bring the key closer.

Green Warning Lights (Information Only)

Direction Indicators

Turn Signal Active

Shows that left or right turn signal is on.

Lights On Indicator

Headlight Indicator

Signifies side lights, headlights, or daytime running lights are on.

Dipped Beam

Low Beam Indicator

Indicates the dipped (low) beam headlights are active.

Main/High Beam

High Beam Indicator

Main (high) beam headlights are active.

Front Fog Lights

Front Fog Lights

Front fog lights switched on for improved visibility.

Rear Fog Lights

Front Fog Warning Light

Rear fog lights are active; increase rear visibility in foggy conditions.

Cruise Control On

Adaptive Cruise Control Warning Light

Cruise control system is engaged, allowing speed to be maintained automatically.

ECO Mode/Green Driving Assist

Eco Mode

Vehicle is set to eco mode to maximize fuel efficiency.

Parking Sensors Active

Parking Sensors Active

Parking sensors are operating to assist with maneuvering.

Lane Departure Alert

Basic RGB

Lane departure system monitors to prevent unintended drift.

Auto Hold

Automatic Brake Hold Indicator Light

The brake auto hold feature is currently maintaining brake force at a standstill.

Adaptive Headlights Active

Adaptive Headlight Warning Light

Indicates adaptive headlight system is adjusting beams automatically.

Automatic Wipers On

Automatic Wipers

Rain sensing wipers are active and adjusting speed automatically.

Heated Rear Window On

Rear Defrost Warning

Rear window heating is engaged to defog or defrost.

This list covers all major, standard, and information dashboard lights relevant to the Citroën C1 as of 2025. Always check your owner’s manual for exact icons, as some symbols may look slightly different by model year.

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