What is the reason for Mercedes-Benz indicating that the tire pressure monitoring has stopped working?
3 Answers
Mercedes-Benz indicating that the tire pressure monitoring has stopped working is due to a damaged tire pressure sensor. The tire pressure sensor is used to monitor the tire pressure and is directly installed inside the tire, connected to the tire inflation port. If the tire pressure sensor is damaged by impact while driving, it can also cause the tire pressure warning light to illuminate. For a damaged sensor, the only solution is to replace it with a new component. According to the regulations and requirements of the international GBT2978-2008 standard, the standard tire pressure is 2.4-2.5bar. In winter, the tire pressure should be based on the standard tire pressure of the car tire, with an appropriate increase of about 0.2bar. In summer, the tire pressure can generally be about 0.1bar lower than the standard to avoid tire blowouts due to high temperatures. Tire pressure reset method: First, turn on the ignition switch, press and hold the tire pressure monitoring reset button until you hear a "beep," then release it. The tire pressure monitoring system will store the current normal tire pressure data, automatically clear the previous data, and finally, the warning light on the dashboard will turn off, completing the tire pressure reset.
Recently, my Mercedes-Benz also displayed a warning that the tire pressure monitoring stopped working, which was quite annoying. I checked some information and found several common causes: one is that the battery in the tire sensor is dead. The sensors in Mercedes-Benz vehicles typically last 5-7 years, and over time they can easily run out of power. Another possibility is that the sensor itself is damaged, such as from hitting a pothole causing excessive vibration or water ingress. It could also be that the system wasn’t reset after the tires were rotated—Mercedes-Benz systems require manual recalibration. Additionally, electronic systems in the car can sometimes conflict and interfere with the signal. I recommend addressing the issue promptly, as actual tire pressure problems can easily lead to blowouts. Last time, I spent some time getting it checked at the dealership, but after solving the problem, I felt much more at ease. After all, driving safety comes first—unstable tire pressure on the highway is extremely dangerous. Remember to check the sensor status during regular maintenance and don’t wait until a failure occurs.
I'm in the auto repair business and often encounter issues with Mercedes-Benz tire pressure monitoring systems being deactivated. The most common problem is sensor failure. Mercedes uses RF sensors, and when the battery life ends, the weak signal output causes the system to stop. Additionally, issues with wheel speed sensors can interfere with monitoring, or improper tire installation may lead to inaccurate data. Sometimes, the system software requires an update, as new Mercedes models are prone to software conflicts. A simple reset might help: locate the menu in the car to restart the tire pressure monitoring system. Avoid tampering with it yourself to prevent electric shock risks. Professional diagnostics with a scan tool can identify the cause, such as a damaged sensor or a short circuit. Timely repairs can prevent minor issues from escalating, as high-speed tire blowouts are frequent. Don’t take driving safety lightly.
