To understand why your BMW or Mercedes is acting up, you have to understand CAN-BUS (Controller Area Network).
When you press the brake pedal, hydraulic pressure clamps the brake pads onto the spinning rotors. In a perfect world, those surfaces are perfectly flat. When they aren’t, the pads bounce over high and low spots thousands of times per minute. That bouncing travels through the…
Mercedes uses a traffic light logic system to help you prioritize.
First, take a breath. The check engine light (CEL) is a general warning from your car’s DME (Digital Motor Electronics). It covers everything from a loose fuel cap to a misfiring cylinder.