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TPMS diagnostic information – Mercedes-Benz S-Class 2000-2019
315 versus 433 TPMS sensors on the Mercedes S-Class
Since the year 2000, the Mercedes S-Class was manufactured with a direct TPMS system, therefore, sensors are installed in the wheel. Some years were manufactured with both 315 MHz and 433 MHz TPMS sensors, and some years were manufactured with only 433 MHz sensors. The VT56, VT55, VT36, and select Powered by ATEQ TPMS Tools can provide the frequency information per year in “Service TPMS” from the main menu. It is important to check the vehicle’s sensor frequency before replacing a sensor to ensure it is being replaced with the correct frequency.
There are differences in 315 and 433 MHz in TPMS sensors. 433 MHz sensors are mandated in Europe, therefore, all European vehicles must be installed with 433 MHz sensors. Some American and Asian vehicles are manufactured with 433 MHz sensors, however, most are manufactured with 315 MHz sensors.
The VT56 has the ability to indicate if the wrong sensor frequency has been installed in a wheel. For example, in 2009, the Mercedes S-Class is manufactured as a 315 MHz and 433 MHz frequencies within the same year. If a 315 MHz sensor is installed in a vehicle that is 433 MHz frequency, the incorrect sensor frequency that was installed will highlight in red.
Using the VIN barcode scanner on the VT56 or checking the sensor information before installing sensors in the wheel will help eliminate the issue with which frequency is required. If there are issues activating the sensor with other tools, it may be because the wrong frequency was installed, or the wrong frequency may have been selected on the tool.
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