SLK 350 (171.456) V6-3.5L (272.963) (2006)
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Tire Pressure Module: Description and Operation
GF40.15-P-5124SK Tire pressure monitor control unit, component description
- with CODE (470) Tire pressure monitor (base)
Component Identification
Location
The TPM [RDK] control unit is located in the left of the luggage compartment.
Task
The TPM [RDK] control unit realizes the following functions:
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Display of a soft warning for slight pressure loss
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Display of a hard warning for significant pressure loss
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Warning in event of rapid pressure loss
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Status monitoring
The TPM [RDK] control unit receives data telegrams via two-way radio from the following sensors:
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Left front TPM [RDK] wheel sensor (A69/1)
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Right front TPM [RDK] wheel sensor (A69/2)
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Left rear tire pressure monitor sensor (A69/3)
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Rear right tire pressure control wheel sensor (A69/4)
The data telegrams contain the pressure, tire pressure temperature, individual serial number and status information (manufacturer, direction of rotation,
operating mode etc.).
If a pressure loss is detected based on this data, the corresponding warning message appears in the upper multifunction display (A1p13) of the
instrument cluster (A1).
In addition to the warning messages the tire pressure monitor warning lamp (A1e66) is also actuated.
The TPM [RDK] control unit constantly monitors all input signals and output signals for faults. Detected faults that are relevant to function are
entered into the fault memory.
Any status messages are shown in the upper multifunction display.
Discrete inputs
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Circuit 30
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Circuit 31
Controller Area Network (data bus/CAN bus) signals
The TPM [RDK] control unit is connected to the Controller Area Network bus Class B (interior) (CAN B) for the exchange of data.
