Understanding dashboard warning lights in your Land Rover Discovery is essential for keeping you safe on the road and preventing costly damage to the vehicle. These lights alert you to potential issues early, allowing quick action to avoid breakdowns or accidents. Regular checks and prompt responses help maintain the car’s performance and extend its lifespan.
Quick Navigation
Red Warning Lights (Stop Immediately)
Battery Charge
This light signals a problem with the battery charging system, often due to a faulty alternator or loose connections. Pull over safely, turn off the engine, and seek help from a mechanic to avoid stranding.
Seatbelt Reminder
It appears when the driver or passengers are not buckled up while the vehicle is moving. Fasten all seatbelts immediately to ensure safety and comply with laws.
Brake System Alert
Indicates low brake fluid or a hydraulic issue in the braking system. Stop the vehicle right away, park safely, and call for professional service to prevent brake failure.
Critical Warning Message
This triangle icon shows an urgent message on the instrument panel about a serious vehicle fault. Stop driving and read the message, then contact a service center.
Diesel Exhaust Fluid (DEF) Low
Signals critically low DEF levels or a system fault, which could stop the engine. Refill DEF immediately or visit a mechanic to restore function.
Engine Temperature
Appears when the engine is overheating, possibly from low coolant or a cooling system failure. Stop safely, let the engine cool, and check coolant levels before proceeding.
Low Oil Pressure
Flashes if oil pressure drops too low, risking engine damage. Stop the vehicle, turn off the engine, check and top up oil if needed, and get professional help.
Lane Departure Warning
Illuminates if you cross lane markings without signaling, indicating a safety risk. Use turn signals properly and stay alert to road lines.
Electric Parking Brake (EPB)
Shows a fault in the parking brake system. Stop and secure the vehicle manually, then have it inspected to ensure safe parking.
Hybrid System Battery Fault
For hybrid models, this warns of a battery issue that could affect power. Stop driving and consult a specialist to diagnose and fix.
Exhaust Filter Full
Indicates the diesel particulate filter is blocked, risking engine damage. Stop and follow on-screen prompts for regeneration or service.
Power Steering Fault
Signals a problem with power steering, making handling difficult. Pull over safely and get it checked to restore control.
Airbag System
Though often amber, it can show red for critical faults in airbags. Stop and have the system inspected immediately for safety.
Door Ajar
Warns that a door is not fully closed, posing a safety risk. Stop, check all doors, and secure them before driving.
Yellow/Amber Warning Lights (Action Required Soon)
Hill Descent Control (HDC)
Flashes if the system can’t engage on steep slopes or is overheating. Adjust speed and try again, or wait for cooldown before descending.
Anti-Lock Braking System (ABS)
Shows a fault in ABS, though brakes still work. Avoid hard braking and get it repaired to restore full braking control.
Brake Pad Wear
Alerts to worn brake pads or low fluid. Check brakes and replace pads soon to maintain stopping power.
Check Engine
Signals an emissions or engine fault, possibly reducing performance. Continue driving but schedule a diagnostic check promptly.
Dynamic Stability Control (DSC)
Flashes during activation or stays on for faults, affecting traction. Drive cautiously and have the system checked.
DSC Off
Confirms stability control is manually turned off. Turn it back on for better handling, or leave off only in specific conditions.
External Temperature
Warns of freezing road conditions when temps drop low. Slow down and watch for ice to prevent skids.
General Warning Message
Highlights non-urgent info or minor issues on the panel. Read the message and address as advised soon.
Glow Plugs
Lights up during cold starts to warm the engine. Wait for it to go out before driving to ensure smooth operation.
Low Fuel Warning
Shows when fuel is running out, with an arrow to the filler side. Refuel at the next station to avoid running dry.
Tire Pressure Monitoring System (TPMS)
Alerts to low tire pressure in one or more tires. Check and inflate tires soon for safe handling and efficiency.
Rear Fog Lights
Indicates rear fogs are on for low visibility. Turn off when conditions improve to avoid blinding others.
Transmission Fault
Warns of issues in the gearbox, possibly limiting gears. Drive gently and visit a mechanic for repairs.
Brake Fluid Low
Indicates low brake fluid levels. Top up fluid and check for leaks soon.
Green Information Lights (Information Only)
Adaptive Cruise Control Active
Confirms the system is maintaining speed and distance from vehicles ahead. No action needed; it’s assisting driving.
Adaptive Speed Limiter
Shows the limiter is set and active, capping your speed. Adjust as needed via controls.
All Terrain Progress Control (ATPC)
Indicates off-road crawl mode is engaged for tough terrain. Use it confidently in low-traction areas.
Auto Stop/Start
Lights up when the engine auto-stops at idle to save fuel. It restarts automatically on acceleration.
Gearshift Indicator
Advises optimal gear for fuel efficiency, like eco mode. Shift as suggested to save fuel.
Low Beam Headlights
Indicates dipped headlights are on. No action; it’s for normal night driving.
Side Lights
Confirms parking or position lights are active. Use in low light for visibility.
Eco Mode
Lights up when fuel-saving mode is engaged, optimizing engine and systems. Drive normally for efficiency.
High Beam
Though often blue, it can show green for active high beams. Dip for oncoming traffic.
Auto High Beam Assist
Indicates automatic high beam switching is on. It adjusts lights for you in dark areas.
Front Parking Aid
Shows parking sensors are active for close maneuvers. Listen for beeps to avoid obstacles.
When looking at Land Rover, make sure to check out our guides on models like the Land Rover Defender, Range Rover Vogue, Range Rover Sport, and Range Rover Velar. Understanding dashboard warning lights is essential. Our expert reviews break down what each light means, highlighting common alerts for these models and what they could signal about underlying issues, so you’re never left guessing behind the wheel.
