Rdk Antenna

RDK Antenna
The antennae receive the radio signals from the wheel sensors and transmit them to the RDK control module for further processing.

The low-fire pressure warning system includes 4 antennae, which are mounted in the wheel housings behind the wheel house liners.










They are linked to the RDK control module by means of high-frequency antenna wires and are assigned to the control module according to their installation location.

The antennae receive all radio signals that are sent out in their reception and frequency range, i.e. each antenna receives the radio signals from all wheel sensors within range. The radio signals are filtered and selected in the control module so that the correct data are processed.

Since this tire pressure warning system is a radio system, headphones for CD players, etc. can potentially cause interference in the RDK, depending on their frequency. The receiver for the antennae can he affected so severely that only a few or no signals intended for the RDK can get through to the RDK control module. The resulting message is "System not active, temporary interference." In certain situations, for example, when the system is still in a wheel identification process, "System not active, service facility" can also appear.

RDK control module

The RDk control module evaluates the radio signals arriving from the antennae, prioritizes them and passes on appropriate information to the instrument cluster. The RDK control module is installed under the instrument panel on the left, on the brace for the parking brake.

Spare Wheel







The spare wheel is not equipped with a wheel sensor and is therefore not included in the low-fire pressure monitoring system. To remind the driver to check the spare wheel, a one time message controlled by an internal counter appears in the instrument cluster (normally every 6 to 8 months).