Dashboard warning lights: what you need to know
Your vehicle’s dashboard warning lights are designed to keep you informed and safe. They use a colour system, similar to traffic lights, to signal whether your car is simply providing information or alerting you to a potential issue.
It’s normal for some of these lights to briefly appear when you start your engine. However, if a light stays on while driving, it’s important to understand what it means and take the right action. Always check your vehicle’s instruction manual or contact the manufacturer for guidance specific to your model.
The three types of warning lights
Red : Warning - act immediately
A red light means there may be a serious fault. Do not begin a journey with a red warning light showing. If one appears while you are driving:
- Avoid stopping in a live lane unless absolutely necessary.
- If safe, continue to the next junction or service area to seek help.
- If you cannot leave the carriageway:
- move into the left lane
- pull into an emergency area, layby, or hard shoulder
Amber : Warning - act soon
Amber lights suggest maintenance or checks are needed. You should not set off on a journey with an amber warning showing. If one appears while driving:
- Continue to a safe place, such as the next junction or service area.
- Do not stop in a live lane unless there is no alternative.
- If you cannot exit the carriageway:
- move into the left lane
- pull into an emergency area, layby, or hard shoulder
Green, White or Blue: Information only
These lights provide general information about your vehicle's status, for example, whether headlights are on. You do not need to stop if these appear, but it's a good habit to find out what they mean at your next planned stop. By recognising what each dashboard light means, you can make calm, informed decisions that keep you, your passengers, and other road users safe.
