For example, the brake light can be confusing. It usually means that the parking brake is engaged, but it can also mean brake fluid is low, power assist for the brake system has failed or the dual braking system has failed. Each problem requires a different type of caution when trying to get your vehicle to the shop for repairs. If you are uncertain what a warning light means, consult your vehicle's owner's manual for a definition. Make sure you understand the exact interpretation of your vehicle's warning lights.
Most people panic when they see that light come on.
Don't panic when this light comes on. If the engine continues to feel normal when you drive it, there is no real urgency and you can make an appointment with your mechanic whenever it suits you. If your vehicle does start to act up, you should get it to your service shop as soon as possible. The on-board computer is constantly monitoring your vehicle's engine and fuel control and emissions systems. Some of today's cars are so sensitive that if you fail to tighten up the gas cap by three clicks, the computer will detect it and chastise you with the engine warning light coming on.