E60, E61, E63, E64, E87, E90: ULF Base Plate
Installation location
The base plate is installed in the stowage compartment between the front seats. To open the stowage compartment lid, press the release button. Illustration shows E60:
| Key | Explanation | Key | Explanation |
|---|---|---|---|
| 1 | Release button | 2 | Cover |
Construction The base plate with cover is part of the delivery specification of the basic telephone fittings. The base plate serves as a holder for the snap-in adapter, which in turn acts as a holder for the matching bluetooth mobile phone. The base plate is used to create the connection to the ULF control unit and the wiring harness. When the vehicle is delivered, a cover panel is engaged on the base plate.
The customer must supply the snap-in adapter and the bluetooth mobile phone. The snap-in adapter is fitted to the base plate in place of the cover panel. An 18-pin plug connector creates the connection to the rest of the vehicle electrical system.
| Key | Explanation | Key | Explanation |
|---|---|---|---|
| 1 | Cover | 2 | Base plate |
| 3 | Aerial connection | 4 | Contacts for power supply |
| 5 | Hands-free button |
How it works The base plate creates the connection between the bluetooth mobile phone and the wiring harness to the ULF control unit (via the snap-in adapter). The ULF control unit is connected to the vehicle's bus system via the MOST bus.
Signal path: Bluetooth mobile phone <=> Snap-in adapter <=> Base plate <=> Wiring harness <=> GSM antenna.
The base plate holds the charging module for recharging the battery in the bluetooth mobile phone. The charging module is connected to terminal 30. The voltage from terminal 30 is filtered, smoothened and fed to the snap-in adapter.
In addition, the hands-free button for switching from privacy mode to hands-free mode is installed on the base plate.