Symbols vary between makes. Where to find the official meaning for your car's lights: the handbook, digital manuals, apps and the dealer.
Looking for more detail? Our full guide covers this topic in depth, with step-by-step advice and sources.
Most warning light symbols follow an international standard, but every maker adds its own. The safest way to know what a light means on your car is to check the official source.
1. The owner's handbook
Usually in the glovebox. Look for a section called "Instruments" or "Warning and indicator lights". It shows each symbol, its colour and what to do.
2. Digital manuals
Most manufacturers publish owner's manuals online or in their app, searchable by registration or VIN. Many newer cars also have the manual built into the touchscreen.
3. The car itself
Modern dashboards often show a text message alongside the light, for example "Check tyre pressure". Read it before dismissing it.
4. Your dealer or garage
If a light is not in the handbook or the meaning is unclear, a dealer can confirm it and read any fault codes.
5. Recalls
Some warnings relate to known faults. Check for open recalls on GOV.UK using your registration.
Our guides
This site explains the most common lights in plain English: engine management, oil pressure, temperature, battery, brakes, ABS, airbag, tyre pressure, DPF, AdBlue, power steering, stability control and more.
Sources and further reading
- GOV.UK: MOT inspection manual for cars
- GOV.UK: MOT changes from 20 May 2018
- The Highway Code
- GOV.UK: check for vehicle recalls
Facts checked on 20 October 2026. Spotted an error? Tell us and we will correct it.