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WARNING LIGHT DIAGNOSTIC

What do these warning lights on the dash mean?

Warning lights on the dashboard light up every time you start your vehicle, illuminate briefly as your car or truck warms up and makes sure all systems are safe and ready to go. Occasionally one light might stay on, indicating there’s a problem.

But if you don't understand what a warning light means—or choose to ignore it—a small problem could turn into a bigger, more expensive, and potentially dangerous issue.

Common warning lights on most cars

CHECK ENGINE LIGHT

There’s a problem with the engine. This is frequently an electronic problem (the computer, ignition, fuel injection, sensor, emission-control system, etc.). You often see this warning light when the gas cap isn’t on correctly. Many situations can generate an error code and trigger the warning light.

ANTI-LOCK BRAKING SYSTEM (ABS) FAULT

This warning light signals a problem with the ABS braking system. The conventional brakes are still working, but you need to have the brakes checked since ABS brakes are designed to reduce the risk of skidding in an emergency braking situation.

CHARGING SYSTEM FAULT

The battery is no longer charging. The alternator, which is like a small generator, is no longer charging the battery. Either it’s defective or the drive belt that turns the alternator is damaged. If the problem is the drive belt, the engine is in danger of overheating, as that belt also drives the engine cooling system.

TIRE PRESSURE MONITORING SYSTEM (TPMS) FAULT

This low tire pressure warning light indicates that one or more of your tires needs air. Check the pressure. You won’t necessarily find the problem tire just by looking unless it’s nearly flat. Use a tire gauge to check the pressure in all your tires.

ELECTRONIC STABILITY CONTROL (ESC) FAULT

This is your electronic stability control (ESC) warning light. When it’s on or flashing, it means that you are on a slippery road and the ESC system is working to stabilize the car. Sometimes called traction and skid control, the ESC reduces the risk of accident by performing both functions. But you still need to adjust your speed to the road conditions.

AIRBAG FAULT

This light signals a problem with the airbags. If the light remains on after you’ve started the engine, one or more of the airbags isn’t working properly. For safety’s sake, you need to look into the problem and have it repaired.

Warning Light Diagnostic
starting from

$105

Performed by a licensed technician

Latest diagnostic tools available

Factory warranty approved

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Level Auto Service is your Toronto based automotive repair shop. We service and repair all makes and models up to the current year. Our licensed technicians have over 60 years of experience, combined. Paired with the latest tools and equipment, we can get the job done right, the first time. We are always welcoming new clients and look forward to building a long lasting relationship with you and your family. See you soon!

Warning Light
starting from

$105

Performed by a licensed technician

Latest diagnostic tools available

Factory warranty approved

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