Oil pressure
If it remains on with the engine running, stop safely and switch off.
Signal tools / Stage 1
Start with the clue you already have.
Decode a scanner code, add the warning lights you can see and turn a written symptom into a clearer, safer garage conversation.
Quick warning-light guide
Some signals should not wait for AI.
These are general safety prompts. Your handbook and a qualified inspection remain the authority for the exact vehicle.
Coolant temperature
Stop safely if the vehicle is overheating, steaming or losing coolant.
Brake system
Stop if braking has changed, fluid appears low or the warning remains red.
Engine warning
A flashing light with poor running needs urgent attention; steady usually needs prompt diagnosis.
ABS
Normal braking may remain, but anti-lock assistance can be unavailable.
Charging system
The battery may not be charging and the vehicle can lose electrical power.