What is the reason for the temporary unavailability of the 4matic display in Mercedes-Benz?
3 Answers
Generally, it is due to a fault in the four-wheel drive system or a false alarm from the system computer. The following is a specific introduction to the 4MATIC technology: Working method: 4MATIC technology uses the automatic braking force distribution function of ABS to achieve differential limitation. When a wheel of this full-time four-wheel drive vehicle slips, the on-board computer uses ABS to brake the slipping wheel to limit idling. Thus, the differential can transfer the power transmitted to the slipping wheel to other non-slipping wheels. Features: The 4MATIC full four-wheel drive system is compact and lightweight, and also has optimal performance in terms of friction. Compared with other full four-wheel drive systems, the advantages are quite obvious, with outstanding performance in weight, fuel economy, comfort, and safety in passive states.
When my Mercedes-Benz displays a temporary malfunction of the 4MATIC system, it is usually caused by several common faults. First, there may be an issue with the wheel speed sensor, such as dirt or mud covering the sensor or the sensor itself being damaged, which prevents the system from accurately reading wheel speed data and triggers the error message. Another key reason is battery-related problems, especially when the battery is aging or has insufficient charge, causing unstable voltage in the 4MATIC control module and leading to a temporary shutdown. Software malfunctions are also a factor, such as when the onboard computer requires an update or has temporary bugs, which can interfere with the operation of the all-wheel-drive system. Additionally, poor wiring connections or blown fuses may disrupt signal transmission. I recommend checking these aspects immediately—clean the wheel speed sensor or use a multimeter to test the battery voltage. If the issue persists, it’s best to visit a dealership for a computer diagnostic to avoid compromising driving safety, as a malfunctioning 4MATIC system increases risks on slippery roads. Regular vehicle maintenance and avoiding rapid driving on rough terrain can help prevent such issues.
My Mercedes occasionally displays a '4matic temporarily unavailable' warning, which makes me a bit nervous because it means the all-wheel drive is disabled, making the car prone to slipping in rain or snow. This is mostly caused by a faulty wheel speed sensor—dust buildup or damage can cause the system to misjudge the wheel speed. Other reasons include a weak battery, especially when the voltage is low after starting in winter, or the software system needing a reset. I've also encountered loose wiring issues, such as unsecured plugs or aged, broken connectors. In such cases, I safely pull over as soon as possible and try restarting the engine to see if the system recovers. If not, I drive straight to a repair shop for diagnosis—never ignore potential risks. In the long run, regularly cleaning the sensors and checking the battery can help prevent such issues.
