Engine Light FAQ

Learn about when your engine needs attention.
Want to learn more about servicing your vehicle? Visit our full FAQ center or give us a call at (314) 635-9598 to answer any additional questions you may have. We're available and always happy to help at Plaza BMW.

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Free car check in Creve Coeur, MO | BMW Check Engine Light Diagnostic

With the complexity of today's vehicles, it often takes a certified BMW technician with advanced OEM tools to get to the root cause of the problem. Our auto diagnostic testing service takes the guess work out repairing your vehicle and is done by certified technicians. As a service department team, our engine diagnostic services help us to provide you with an accurate diagnosis of your vehicle's engine problem and a repair that is done correctly the first time. Your vehicle is more than an engine too, and we know that. To drive safely, it's important to have brakes, tires, and your vehicle aligned properly. The amount of working parts in a vehicle can be overwhelming, that's why we are here to help!

Early Warning System | Check Engine Light Service

Modern vehicles are now equipped with onboard computers that monitor the critical systems in your BMW that warn you when something is not going right. Your check engine light is your vehicle computer's way of telling you that there may be a problem and your BMW requires Service as soon as possible.

Reasons For Warning Light| Warning Light

There are many reasons for a check engine light activation that range from something as simple as a loose gas cap to something as serious as a faulty catalytic convertor. A few of the possible problems that could cause your check engine light to activate are loose gas cap,problem with the MAF sensor or circuit, system running too lean or too rich, cylinder misfire, knock sensor circuit malfunction, insufficient EGR (Exhaust Gas Recirculation) flow and more.