BYD Warning Lights — United Kingdom
Dashboard warning light meanings, severity, and what to do for BYD vehicles.
58Warning Lights
8Critical
33Warning
Battery & Charging
- Check On-Board Charging SystemWarning›This warning indicates a fault with your vehicle's onboard charging system
- High Voltage Battery OvertemperatureCritical›If this light illuminates, your high-voltage battery is overheating and you must pull over immediately to allow it to cool
- High Voltage Battery FaultCritical›This light comes on briefly when you first start the vehicle
- Low Battery WarningInfo›This warning indicates your battery charge is critically low
- 12V Supply System FaultWarning›Indicates a fault with the vehicle's DC system or low voltage battery
- Charging Connected IndicatorInfo›This indicator illuminates when the charging plug is securely connected to your vehicle's charge port, indicating that the charging system is ready or actively charging
Braking System
- Check ESC SystemWarning›Your dashboard is displaying a 'Check ESC System' alert, indicating the Electronic Stability Control system has detected a malfunction
- ABS FaultWarning›During vehicle start-up, the ABS warning light briefly illuminates as part of the system self-check, then turns off to indicate the anti-lock braking system is operating normally
- ESC FaultWarning›When starting your vehicle, the ESC (Electronic Stability Control) warning light will briefly illuminate during the system self-check, then turn off – this indicates normal operation
- ESC OFFInfo›This light illuminates briefly during vehicle startup as part of the system self-check, then turns off
- Parking System FaultWarning›This warning light indicates low brake fluid or a brake system malfunction
- Automatic Emergency Braking AlertWarning›This warning light indicates your Forward Collision Warning (FCW) or Autonomous Emergency Braking (AEB) system has detected a potential collision risk ahead
- Brake System FaultCritical›This warning light indicates a fault in the brake system
Driver Assist
- Blind Spot Monitor FaultWarning›This warning light indicates the Blind Spot Detection (BSD) driver assistance system is limited or faulty
- Driver Assist Limited (FCW/AEB)Info›This indicates your Forward Collision Warning (FCW) or Autonomous Emergency Braking (AEB) is currently limited or unavailable
- Driver Assist Limited (BSD)Info›This warning indicates the Blind Spot Detection (BSD) system is limited or unavailable
- Driver Assist Limited (LDW/LDP)Info›Lane Departure Warning (LDW) or Lane Departure Prevention (LDP) is currently limited
- Adaptive Cruise Control FaultWarning›When this warning light stays on, it indicates a fault with the Adaptive Cruise Control (ACC) system and it cannot operate normally
- Lane Assist FaultWarning›Indicates a malfunction in the Lane Departure Warning (LDW) or Lane Departure Prevention (LDP) system
- Adaptive Headlight FaultWarning›This indicates a fault with the adaptive headlight system
- Driver Monitoring FaultInfo›This warning light indicates a fault with the Driver Monitoring System (DMS)
- Han EV: Remote Driving SuspendedInfo›This indicates the remote driving function has malfunctioned
Powertrain
- EV Function LimitedWarning›This warning indicates that your vehicle's electric drive function is limited
- Powertrain FaultCritical›This warning light indicates a fault in the vehicle's powertrain system
- Drive Power LimitedWarning›This light indicates the vehicle's power output is being limited
- Atto 3: High Voltage Interlock FaultCritical›A high-voltage circuit interlock fault specific to the BYD Atto 3
Steering & Chassis
- Check HDC SystemWarning›This warning indicates a fault with the Hill Descent Control (HDC) system
- Steering System FaultCritical›Indicates a steering system malfunction
- Tyre Pressure FaultWarning›At vehicle startup, this warning light will briefly illuminate then turn off during the system self-check – this indicates the Tyre Pressure Monitoring System (TPMS) is functioning normally
Safety
- Airbag FaultWarning›This warning light illuminates during vehicle startup self-check and turns off after a few seconds when the airbag system is functioning properly
- Seatbelt ReminderInfo›This warning light indicates that the driver or front passenger seatbelt is unfastened
- Smart Key System WarningWarning›If you press the Start/Stop button without the key inside the vehicle, this warning light illuminates briefly with a single beep, while the dashboard displays "Key not detected - please confirm key is in vehicle"
- Child Presence Detection Fault Warning LightWarning›This warning light indicates the Child Presence Detection (CPD) system has malfunctioned
Lighting
Thermal Management
- Coolant Temperature HighCritical›This warning light indicates the electric drive system coolant is overheating (EV models) or the engine coolant is overheating (DM-i hybrid models)
- Motor OvertemperatureWarning›This indicates your drive motor is overheating
- Motor Coolant Temperature HighWarning›This warning light indicates the coolant temperature in the motor cooling circuit is too high
Body Electronics
- Vehicle Network FaultWarning›This warning indicates a vehicle network fault
- Check Headlight SystemWarning›This message on your dashboard indicates a fault with the headlight system
- Master Warning LightWarning›This warning light indicates that there's a message requiring your attention displayed in the information display area
- Dolphin: Gear Selector FaultWarning›The electronic gear selector system on the BYD Dolphin has a fault
- Seal: Memory System FaultInfo›The seat/mirror/steering memory system on the BYD Seal has a fault
Engine System
- Engine Accessory Function LimitedInfo›This warning indicates a malfunction in the engine accessories, such as the compressor, alternator, or water pump
- Emission Fault IndicatorWarning›When the vehicle is in ON mode, this indicator illuminates during the system self-check
- Engine Fault WarningWarning›The Engine Malfunction Warning Light (MIL) illuminates briefly during startup as part of the system self-check and should turn off within seconds—this is normal
- Low Fuel WarningInfo›This warning light indicates your vehicle is running low on petrol and needs to be refuelled soon
- Low Oil Pressure WarningCritical›This warning light indicates low engine oil pressure
ADAS
- Check Multi-function Video ControllerWarning›Your dashboard is displaying 'Please check multifunction video controller' or 'Multifunction video controller function limited'
- Environment Limited, Smart Camera UnavailableWarning›This warning indicates that environmental conditions such as heavy fog, heavy rain, bright glare or extreme temperatures are preventing the smart camera from operating normally
- ADAS Functions Temporarily UnavailableWarning›This warning indicates that the Advanced Driver Assistance Systems (ADAS) are temporarily unavailable due to external environmental conditions affecting sensor performance
- Emergency Lane Keeping Assist (ELKA) Fault Warning LightWarning›This warning light indicates a fault with the Emergency Lane Keeping Assist (ELKA) system
- Speed Limit Sign Recognition IndicatorInfo›This indicator illuminates when the Traffic Sign Recognition system detects a speed limit sign, displaying the current road speed limit
Engine
- GPF Regeneration Required IndicatorInfo›Your petrol particulate filter (GPF) has accumulated excess soot and is actively regenerating (self-cleaning), indicated by a solid green warning light
- GPF Regeneration Fault LightWarning›The GPF (Gasoline Particulate Filter) warning light illuminates solid yellow when the filter's soot load reaches maximum capacity, causing increased fuel consumption and reduced engine performance
Vehicle
- Solenoid Valve Cleaning, Please WaitInfo›The 'Solenoid Valve Cleaning' message indicates your vehicle is performing an automatic system cleaning cycle
- Low Speed Warning Sound System Fault Warning LightWarning›This warning light indicates a fault with the Low-Speed Pedestrian Warning System
- Low Speed Warning Sound OFF IndicatorInfo›This indicator means the low-speed pedestrian warning system has been manually switched off
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