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Tire Pressure Monitoring System (TPMS)

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The Upper electronic module (UEM) may store diagnostic trouble codes (DTCs) in the event of an error in the actual receiver or in a sensor. In order to carry out a correct evaluation of the function, the vehicle must have traveled faster than 40 km/h (25 mph) for longer than 570 seconds (approximately 9.5 minutes). This time is accumulated time, i. e. the counted time is interrupted if the vehicle travels slower than 40 km/h (25 mph), if for example, stopping at traffic lights. Counting continues as soon as the vehicle exceeds 40 km/h (25 mph). The Upper electronic module (UEM) can store two diagnostic trouble codes (DTCs) per sensor. A diagnostic trouble code (DTC) for lost communication and a diagnostic trouble code (DTC) for low battery voltage. When a diagnostic trouble code (DTC) is stored the ID number is also stored on the sensor which the diagnostic trouble code (DTC) applies to. When a diagnostic trouble code (DTC) is stored a message is shown in the Driver information module (DIM).