BYD Dolphin Dashboard Warning Lights Explained
BYD Dolphin dashboard warning lights follow a simple colour code. Red means stop safely as soon as you can, amber means a fault needs attention soon, and green or blue simply confirm a system is active. The most urgent red lights on the Dolphin are the high-voltage battery fault, powertrain fault, brake system, steering system, and airbag warnings. If any red light appears while driving, park safely and have the car checked.
BYD Dolphin Warning Light Colours at a Glance
| Measurement | Meaning | Action |
|---|---|---|
| Red | Serious fault or safety risk | Stop safely as soon as possible |
| Amber / yellow | A fault or reduced function | Check soon, drive with caution |
| Green | A system is active and working | No action needed |
| Blue | High beam is on | Dip for oncoming traffic |
| Grey | A system is on standby | Informational only |
How to Read Your Dolphin's Warning Lights
When you switch the Dolphin on, several lights briefly illuminate as the car runs a self-check. This is normal, and they should go out within a few seconds.
A light that stays on, or comes on while you are driving, is the one to pay attention to. The colour tells you how urgent it is before you even know what the symbol means.
- Red: The most serious. Stop as soon as it is safe to do so
- Amber: Something needs checking, but you can usually drive carefully to a safe place
- Green and blue: Reassurance that a feature is switched on
The list below follows the exact warning lights documented in the BYD Dolphin owner's manual, grouped by colour so you can find yours fast. This is the third in our dashboard series, following our guides to the Atto 3 dashboard warning lights and the Seal dashboard warning lights, so owners of more than one BYD can cross-reference easily.
Solid Versus Flashing: Why It Matters
Beyond colour, whether a light is steady or flashing changes its meaning. The Dolphin uses both, and the difference is worth understanding.
- Steady on: Usually a confirmed status or a fault that is currently present
- Flashing: Often signals an active event, such as the stability control working, or an urgent condition asking for immediate attention
- Briefly on at start-up: Part of the normal self-check, and nothing to worry about
- On with a message: The paired text on the display tells you exactly what the car wants you to do
For example, a flashing stability control light means the system is actively helping you keep grip, while a steady one points to a fault. Same symbol, very different meaning.
Red Warning Lights: Stop as Soon as Safe
Red lights signal a genuine safety issue or a serious fault. Treat every one of these as a prompt to pull over safely and, where noted, contact a BYD dealer.
- High-voltage battery fault: A problem with the main drive battery. Park safely and seek help
- High-voltage battery overheating: The traction battery is too hot. Stop and let it cool, then have it checked
- Powertrain fault: A fault in the drive system that can limit or stop propulsion
- Brake system warning: Often low brake fluid. The manual says it is dangerous to continue, so park the car
- Steering system fault: If this appears while driving, park safely immediately, as steering may become heavy
- Airbag fault: The airbag system has a fault and may not deploy correctly in a crash
- Motor coolant overheating: The motor cooling system is too hot and needs attention
- Low-voltage power system fault: A fault in the 12-volt system that supports the car's electronics
- Main alarm indicator: A general red alert that groups with a specific message on the display
- Seat belt reminder: A belt is unfastened. Buckle up before driving
If more than one red light appears together, such as the brake and ABS lights, the manual treats this as more serious than either alone. Do not keep driving.
The reasoning behind stopping is simple. A red light on the Dolphin points to something that affects your safety or the health of an expensive component like the drive battery or motor. Continuing to drive risks turning a repairable fault into a far costlier one, or worse, an unsafe situation on the road. When in doubt, treat red as a firm instruction to stop.
Amber Warning Lights: Check Soon
Amber, or yellow, lights indicate a fault or a reduced function. You can usually drive on carefully, but you should have the issue looked at soon and adjust how you drive in the meantime.
- ABS fault warning: The anti-lock braking system is not working. Normal brakes still function, but avoid harsh braking
- ESC fault warning: Electronic stability control has a fault. Drive gently, especially in the wet
- Tyre pressure fault warning: Low pressure or a monitoring fault. Check your tyres and re-match the system if needed
- Parking system fault: A fault in the electronic parking brake or related system
- Driving power limit warning: The car has reduced its available power to protect itself. Drive gently and investigate
- Driver attention warning: The car senses signs of fatigue and suggests a break
- CPD indicator: The Child Presence Detection system, which alerts you to occupants left in the car
- ESC OFF indicator: Confirms you have switched stability control off, which reduces intervention on slippery surfaces
- Smart key warning light: The car cannot detect the key, or its battery is low. Check the fob battery
The tyre pressure and smart key lights are among the most common amber warnings owners see, and both are usually simple to resolve. A low key battery, for instance, is a quick fix once you know the signs.
Because the Dolphin's tyre pressure light is one of the most common, our separate guide to the correct pressures and TPMS behaviour is worth a read if yours is showing.
Green and Blue Indicators: Everything Is Working
Green and blue lights are not warnings at all. They simply confirm that a feature is switched on, so there is no need to worry when you see them.
- Turn signal indicators: Flash green with your indicators
- Position light indicator: Green, showing your parking or side lights are on
- High beam indicator: Blue, reminding you to dip for oncoming traffic
- Normal mode: Confirms the standard drive mode is selected
- OK indicator: Green, showing the vehicle is ready to drive
- ACC status indicator: Shows adaptive cruise control is active
- Rear fog light indicator: Confirms your rear fog light is on
- EPB indicator: Shows the electronic parking brake status
- AVH indicator: Automatic Vehicle Hold, grey on standby and active when holding the car at a stop
EV-Specific Lights You Will Not See on a Petrol Car
As an electric car, the Dolphin has several lights a traditional vehicle simply does not have. Knowing these helps you tell a normal EV message from a genuine problem.
- High-voltage battery charging connection indicator: Confirms the charging cable is connected
- State of charge: Your battery level, the EV equivalent of a fuel gauge
- Regenerative braking display: Shows energy being recovered under braking
- Power meter: Displays power being used or recovered in real time
- Driving power limit: Warns when the car has capped power, often due to temperature or battery state
The high-voltage battery and powertrain fault lights are the ones that matter most here. Both are red, and both mean you should stop safely and seek help rather than press on. Because these systems are unique to electric cars, a general mechanic may not be equipped to diagnose them, which is another reason the manual points owners toward a BYD authorised service provider for anything involving the high-voltage system.
On the reassuring side, the charging connection indicator and the state-of-charge display are simply part of everyday EV life. Seeing them is completely normal and means the car is doing exactly what it should.
What to Do When a Light Appears
A calm, consistent response keeps you safe and avoids unnecessary panic or expense.
- Note the colour first: Red means act now, amber means soon
- Read the message: The Dolphin usually shows a text explanation alongside the symbol
- For any red light: Find a safe place to stop as soon as you can
- For an amber light: Reduce speed, drive gently, and plan a check
- Do not ignore repeats: A light that keeps returning needs professional attention
- When unsure: Contact a BYD authorised dealer or service provider
When to Contact a Dealer, and When Not To
Not every light means a workshop visit. Knowing the difference saves you time and unnecessary worry.
- No action needed: Green and blue indicators, and any light that flickers only during the start-up self-check
- Self-resolve first: A tyre pressure light after a cold morning, or a smart key light with a fading fob battery, often clear once you address the cause
- Book a check soon: Any amber light that stays on, such as ABS or stability control faults
- Stop and seek help now: Any red light while driving, especially the high-voltage battery, powertrain, brake, or steering warnings
If you own more than one BYD, the same colour logic applies across the range. Our guide to the Shark 6 dashboard warning lights shows how the ute handles the same system, with a few extra symbols for its plug-in hybrid powertrain.
Common Mistakes
- Ignoring the colour: The colour tells you the urgency before you identify the symbol
- Panicking at start-up flicker: Lights that flash briefly during the self-check are normal
- Driving on with a red light: Red means stop safely, not carry on and hope
- Confusing EV lights with faults: Charging and power-meter symbols are informational, not warnings
- Overlooking combined lights: Two red lights together, like brake and ABS, are more serious than one
- Clearing without fixing: A light that returns points to an unresolved fault