What must a driver do if an engine warning light comes on during driving?

If an engine warning light comes on while driving, it is crucial for the driver to safely pull over and investigate the issue. The engine warning light serves as an alert that there may be a malfunction in the vehicle's engine or emissions system, which could lead to serious damage if not addressed promptly. Pulling over allows the driver to assess the situation without risking safety on the road or further damaging the vehicle.

Taking immediate action by stopping allows the driver to check for any unusual sounds, smells, or performance issues. This approach not only enhances safety for the driver but also for other road users. Ignoring the light can lead to more significant problems, such as engine failure, which could result in costly repairs and compromised safety. Additionally, continuing to drive when a warning light is illuminated can increase the likelihood of more severe issues arising, making it vital to prioritize immediate investigation of any warning signals.