In some cases, the sensor may need to be replaced, while in other cases, it may be a wiring issue or a problem with the computer itself. The mechanic can use a diagnostic tool to read the vehicle’s computer and identify which sensor is causing the problem. If you suspect that a faulty sensor is causing the airbag light to turn on, it’s important to have your 200 inspected by a qualified mechanic. A faulty sensor may also cause the airbag system to deploy at the wrong time or not at all, which can be dangerous in the event of an accident. If any of these sensors are damaged or malfunctioning, they may not be able to communicate with the car’s computer, which can cause the airbag light to turn on. Occupant sensors are located in the seats and detect whether there is a person sitting in the seat. Seatbelt sensors are located in the seatbelt buckle and detect whether the seatbelt is fastened. Impact sensors are typically located at the front of the vehicle and detect the force of an impact. There are several different types of sensors in the airbag system of 200, including impact sensors, seatbelt sensors, and occupant sensors. If one of these sensors is damaged or malfunctioning, it can cause the airbag light to turn on. The airbag system relies on a network of sensors to detect a crash and deploy the airbags. I would highly suggest taking it to a skilled diagnostician or a different dealer if they can help you.One of the most common reasons for the airbag light to turn on in 200 is a faulty sensor. If I did, it was a computer/ electrical issue and the SRS system was replaced. I never had problems pulling airbag codes or diagnosing airbag issues in those vehicles. I worked for Honda, GM and Toyota and when the airbag issues started popping up, people were getting killed because of randomly deploying airbags. The fact that the dealership can't figure it out tells me that you need to take it somewhere else and have it looked at, or you need to contact GM directly and tell them about this.

IF it does however reappear, this means that is a problem that needs to be fixed and it wasn't a one time issue.

Generally if you don't have an advanced or OEM scan tool you can disconnect all power to the vehicle for around 30 minutes. As a safety measure the computer will throw a code to alert you to a fault in the system. When the ECM is powered on the SRS system and your ECM communicate with eachother. With GM vehicles, it's generally due to the SRS (Safety Restraint System) circuit having a fault. There are many reasons your airbag lights can come on.

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