See also:

Brake system warning light
• Driving with the brake system warning light on is dangerous. This indicates your brake system may not be working properly. If the light remains illuminated, have the brakes inspected by a SUB ...

Parking on a grade
Always block the wheels under both vehicle and trailer when parking. Apply the parking brake. You should not park on a hill or slope. But if parking on a hill or slope cannot be avoided, you shoul ...

If the light is blinking
If the light is blinking while driving, an engine misfire condition has been detected which may damage the emission control system. To prevent serious damage to the emission control system, you shoul ...