There are a number of different sensors under the hood of your Mercedes-Benz that are necessary for it's operation. The different sensors are systems that help to control a range of things that are vital to the efficient movement and operation of your vehicle. These things include your coolant levels, oil prssure, emission levels, and temperature. Your car sensors are important when it comes to processing a range of values and determining what levels are accurate for each individual part of the vehicle. There have been advancements made with computers found in vehicles that make it possible for your sensors to communicate with them. These help give you reports when there is something wrong. It's important that you are maintaining the condition of the sensors in your vehicle so you don't get inaccurate readings of things. From your mass air flow sensor to the oxygen sensor, keep an eye on the condition of all of these and make sure you get replacements if needed. When shopping for replacements, you want to be sure and invest in OEM Mercedes-Benz replacements.