Jaguar & Land Rover Warning Lights Explained
Jaguar and Land Rover (including Range Rover) share the same electronics and warning-light systems, so a fault that appears on an XF is the same story on a Discovery or Range Rover Evoque. This guide uses JLR's own names — DSC, EPB, the 'Restricted Performance' message and the AdBlue countdown.
Red — stop & investigate
A red light means stop as soon as it is safe. Continuing to drive can cause expensive damage or become unsafe.
Engine oil pressure
StopOil pressure has dropped dangerously low. Continuing risks serious engine damage.
What to do: Stop as soon as it is safe and switch off. Check the oil; do not drive with this light on.
Coolant / temperature
StopThe engine is overheating. Jaguar and Land Rover often show a 'Check coolant level' message beforehand.
What to do: Pull over and let it cool. Check the coolant when cold and have the system inspected.
Battery / charging
StopThe battery is not being charged — usually an alternator or drive-belt fault.
What to do: Switch off non-essential electrics and reach safety. The car may stop once the battery is flat.
Brake (red)
StopLow brake fluid or a serious brake fault.
What to do: Stop and check the fluid. If the pedal is soft, don't drive — arrange recovery.
SRS restraint system
StopA fault in the airbag or seatbelt system — the airbag may not deploy in a crash.
What to do: Drive carefully and have it diagnosed promptly.
EPB / electronic parking brake
StopThe electronic parking brake is applied or has a fault. Shown when the brake is on, or with a 'Parking brake fault' message.
What to do: If the brake is released and it stays on, get it checked. On JLR models EPB faults are common after battery work.
Amber — check soon
Amber means something needs attention. It is usually safe to drive gently, but don't ignore it — book the car in for diagnosis.
Engine management (MIL)
CautionAn emissions or engine-management fault is logged, often shown with a 'Restricted Performance' message on JLR.
What to do: Drive gently and book diagnostics. 'Restricted Performance' means the engine is de-rated deliberately.
ABS
CautionAnti-lock braking is disabled; normal braking still works.
What to do: Allow longer stopping distances and get it diagnosed.
DSC (Dynamic Stability Control)
CautionDSC is switched off or has a fault. On Jaguar and Land Rover it is often paired with a 'DSC not available' message.
What to do: If you switched it off, fine. If it appeared alone, have it checked.
Brake pad wear
CautionFront or rear pads are at their minimum thickness.
What to do: Book a brake inspection soon to avoid disc damage.
DPF (diesels)
CautionThe diesel particulate filter is blocked or regeneration has failed — common on Ingenium diesel models.
What to do: Complete the handbook regeneration drive. If it persists, book a diagnostic check.
AdBlue / DEF (diesels)
CautionAdBlue is low or a system fault exists. JLR warns well ahead of a no-start lockout.
What to do: Top up AdBlue promptly. If it's a fault, get it diagnosed to avoid the engine being prevented from restarting.
Tyre pressure / TPMS
CautionOne or more tyres are significantly under-inflated.
What to do: Check pressures at the next stop. If it flashes, stop and check for a puncture.
Service spanner
CautionA service is due.
What to do: Book a service. The cluster shows how much distance or time is left.
Green & blue — information
Green and blue lights tell you a system is switched on or working normally. No action needed.
Indicators / hazards
InfoIndicators or hazard lights are active.
What to do: Normal operation.
Lights on
InfoSide or dipped lights are switched on.
What to do: Normal operation.
RELATED GUIDES & SERVICES
Jaguar and Land Rover share these systems, so the diagnosis is the same across both. JVS is an independent specialist in Telford — not an authorised Jaguar or Land Rover dealer and not affiliated with either. Always confirm against your handbook.
NEXT STEP
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