What do dashboard warning lights mean?

Published 13 March 2026

  • A red warning light typically means that your car needs urgent attention.
  • A brake or temperature warning light means it may be time to contact your breakdown cover provider.
  • Amber or yellow dashboard lights suggest something's off but not urgent.

Dashboard lights can cause distractions on the road and impact our ability to drive safely. That's why it's important you know which action to take when your dashboard does light up.

Just like a traffic light, the colours on your dashboard mean different things and require different courses of action.

  • Red dashboard warning lights: This calls for immediate action. If the light is showing that your screen wash or engine oil is low, then this is something you can sort at the next service station. If it's more serious, such as a brake, airbag or temperature warning light, then you may need to pull over and call Britannia Rescue for help.
  • Amber dashboard warning lights: This means something's off but it's not urgent. You should still get your car checked out by a mechanic as soon as you can, especially if you notice the engine or airbag light, but you don’t need to call us or pull over. 
  • Green dashboard warning lights: This indicates that a feature of the car is turned on and running. For example, your full beam indicator usually glows blue or green to show you've flicked it on. 
     

Dashboard warning lights are crucial indicators of your vehicle's way of alerting you to potential issues. So, let’s take a look at some of the key warning lights and what they mean…

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Engine warning light

If the light stays on after starting the engine, get your car checked immediately, even if it feels normal to drive. It indicates that there's something wrong with the engine, and you could end up damaging it if you continue to drive.

It could be letting you know about a minor issue like a broken sensor, or a more serious problem such as a fault with the emission control system.

So, it's important to have this checked promptly to avoid further engine damage, or a car breakdown.

OIl pressure warning light

Oil is essential to lubricate the engine, so if the light comes on, it's a good idea to stop and check your oil gauge. A simple top-up might be all you need if the level's low, but if the warning light remains on after you’ve topped up, it could mean there’s a more serious issue like high oil temperature or low oil pressure, risking engine damage.

So, if the oil light remains illuminated after an oil top-up, seek professional help.

Temperature warning light

This light signals that your engine overheating, potentially due to low coolant levels. Driving with an overheated engine risks a complete engine shutdown, so stop immediately to prevent severe engine damage and check for leaks.

You might just need more coolant, so top-up and then see if the light remains. If it does,  there could be a leak that needs repairing.

Brake warning light

This light indicates an issue with the braking system, such as low brake fluid or worn brake pads. If accompanied by the ABS warning light, it signals a malfunction in the braking system.

So, if you see this light, don't take any chances; pull over as soon as it's safe to do so, and give Britannia Rescue a call.

Battery warning light

This light suggests the battery isn't charging properly, possibly due to a faulty alternator or electrical connection. When the battery charge light is on, it means the battery isn't charging as it should, potentially affecting power steering, headlights, and other electrical features. Driving with battery warning lights on can lead to sudden power failure, so make sure to get it checked immediately.

So, make sure to ask a mechanic to inspect the battery as soon as possible to prevent a breakdown.

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Airbag warning light

A red airbag light indicates a malfunction in the airbag system, which could prevent proper deployment during a crash. Make sure to get this checked by a professional as soon as possible.

Power steering warning light

This suggests an issue with the power steering system, making the car harder to manoeuvre. Restarting the vehicle may resolve minor issues, but persistent problems require a professional inspection to avoid unsafe driving or a roadside reakdown.

Low tyre pressure warning light

This lets you know your tyre pressure is low, which affects the safety of your driving. So, check and adjust you tyre pressure promptly to avoid unsafe conditions. The correct tyre pressure for your car will be in your vehicle handbook or online on the manufacturer’s website.

ABS warning light

This signals a fault in the anti-lock braking system. Normal braking may still function, but professional inspection is advised as soon as possible.

ESP warning light

This indicates a problem with the electronic stability control system, crucial for traction control. If the light remains on, have it checked at a garage before driving any further.

So, in summary….

  •  A red warning light needs urgent attention.
  • An amber warning requires a check-up.
  • To reset warning lights after repairs, you may need to restart the vehicle or disconnect the battery.
  • Persistent lights may indicate unresolved issues, requiring professional assistance.

…and if you’re caught short with a dashboard warning light that leads to a breakdown, Britannia Rescue is here to help. Just give us a call and we’ll take it from there.