Understanding your Audi Q5’s dashboard warning lights is critical for safety and vehicle longevity. Ignoring these alerts can lead to severe mechanical damage, compromised safety, or costly repairs. Below is a comprehensive guide to major warning lights, categorized by urgency.
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Red Warning Lights (Stop Immediately)
Engine Oil Pressure
Low oil pressure or overheating detected. Stop immediately, check oil level, and avoid driving until resolved.
Brake System Alert
Brake fluid low or hydraulic failure. Park safely and contact a service center.
Coolant Temperature Warning
Coolant level too low or engine overheating. Turn off the engine and check coolant levels.
Check Engine Light
Engine malfunction (e.g., emissions, ignition, or sensor issues). Seek immediate diagnostics.
Airbag System Fault
Airbag or seatbelt tensioner failure. Visit a service center to restore safety features.
Steering Lock Malfunction
Electronic steering lock failure. Do not turn off the engine; seek assistance immediately.
Battery Alert
Electrical system fault or charging failure. Stop driving to prevent stalling.
Transmission Malfunction
Gearbox or clutch failure. Pull over safely and avoid driving further.
Door Ajar Warning
A door or trunk is open. Secure all closures before driving.
Fuel Cap Alert
Loose or missing fuel cap. Tighten or replace to prevent fuel evaporation.
AdBlue Empty
Low AdBlue fluid (diesel models). Refill within 1,000 km to avoid engine shutdown.
Parking Brake Failure
Malfunction in parking brake system. Do not park on inclines; contact service.
ABS Failure
Anti-lock braking system disabled. Drive cautiously and repair promptly.
Power Steering Loss
Steering assist malfunction. Stop driving; towing may be required.
Emergency Call System
SOS connectivity failure. Verify network coverage or visit a dealer.
Yellow/Amber Warning Lights (Action Required Soon)
Tire Pressure (TPMS)
Low tire pressure detected. Check and inflate tires to recommended PSI.
Brake Pad Wear
Brake pads worn beyond safe limits. Replace pads soon.
Check Engine Light (Minor)
Emissions or sensor issue (non-critical). Schedule diagnostics.
Diesel Particulate Filter (DPF)
Soot buildup in exhaust filter. Drive at highway speed to regenerate.
ESC/ESP Malfunction
Traction control system fault. Drive cautiously on slippery surfaces.
AdBlue Low
AdBlue fluid below 25%. Refill within 500 km.
Low Fuel
Fuel level critical. Refuel soon to avoid stalling.
Headlight Malfunction
Bulb or circuit failure. Replace bulbs or inspect wiring.
Lane Departure Warning
System sensors obstructed. Clean windshield or check for damage.
Engine Pre-Sense Alert
Collision risk detected. Adjust driving or clear sensor obstructions.
Key Not Detected
Key fob battery low or signal interference. Replace battery.
Suspension Fault
Air suspension malfunction. Avoid rough terrain; repair soon.
Glow Plug Issue
Diesel ignition assist fault. Cold starts may be difficult.
Wiper Fluid Low
Windshield washer fluid empty. Top up to maintain visibility.
Service Due Reminder
Scheduled maintenance overdue. Book an appointment.
Green Warning Lights (Information Only)
Headlights On
Low beams or daytime running lights active.
Cruise Control Active
Speed set and maintained automatically.
Turn Signal Active
Indicator blinking for lane changes or turns.
Eco Mode Engaged
Fuel-efficient driving mode activated.
Parking Assist Active
Sensors guiding parking maneuvers.
Auto Start-Stop
Engine temporarily off at stops to save fuel.
Rear Fog Lights
Increased visibility in heavy fog.
All-Wheel Drive
Quattro® system distributing power to all wheels.
Adaptive Light System
Headlights adjusting to steering input.
Seatbelt Reminder
Passenger seatbelt unfastened.
Trunk Open
Trunk or liftgate ajar.
Drive Mode Selected
Comfort, Dynamic, or Individual mode activation.
Auto Hold Active
Vehicle held stationary on inclines without pedal input.
Regularly consult your Audi Q5 owner’s manual for model-specific details. Address red lights immediately, schedule service for amber alerts, and use green indicators to optimize driving systems.
