Introduction

ZKE V Introduction







The ZKE V system is a new variant Central Body Electronics system unique to the E46. Many of it's features and functions operate similarly to previous BMW ZKE systems with minor changes, added features, and refinements.

The following functions are directly controlled by the General Module V (GM V):
- Windshield wiping/washing with optional Rain Sensor Interface
- Central locking with power trunk release
- FZV Keyless Entry
- Power window control
- Car Memory/Key Memory Capabilities
- Interior lighting
- DWA alarm system (optional)
- Consumer cut-off/sleep mode

The following functions are included as body electrical systems but are not directly controlled by the GM V:
- Rain Sensor
- Sunroof operation (Sunroof Control module on K Bus).
- Driver's seat electrical adjustment with memory (Seat Memory control module on K Bus)
- Passenger seat electrical adjustment (no control module - switch controlled)
- Side Mirror - adjustment/heating (also includes windshield washer jet heating - - switch control led)

ZKE V introduces the following changes and new features.
- Similar to the E36 GM IV, the E46 GM V controls it's respective peripheral components directly (no P Bus). It does however communicate with other pertinent control modules via the K-bus as does the E38/E39 GM V.
- The Central Locking system uses a new style door lock actuator with hall effect sensors.
- The GM V is responsible for the Key Memory feature. It provides the added convenience of identifying users of the vehicle. Whenever the vehicle is locked or unlocked via the FZV keyless entry system, a unique key identification signal (key number) is transmitted to the General Module.

The key identification signal alerts the GM V to communicate with other control systems over the K Bus to store (when locked) or reset (when unlocked) certain driver adjustable settings for the driver using the specific key. The GM also resets certain driver adjustable settings that it controls directly.

The Key Memory feature is being introduced along with the new Car Memory Feature. These features are covered in detail further on in this manual.

The E46 Body Electronics system control modules are:

- General Module V; main controller for ZKE functions. The GM V communicates with other vehicle control modules via the K bus.

- Seat Memory Module - SM; Located in the driver's seat base, the SM controls and memorizes the driver's seat position(s). The SM communicates with the GM V via the K bus.

- Sunroof Module - SHD; Located above the rear view mirror, the sunroof module controls it's integral sunroof motor as on previous systems. The SHD communicates with the GM V via the K bus.