E60, E61, E63, E64, E87, E90: Compensator
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2005 BMW 645Ci, 2005 BMW 545i, 2005 BMW 530i, 2005 BMW 525i, and 2004 BMW 645Ci. However, it is still accessible from the selected car via links, so may be relevant.
Installation location
The compensator (optional, special accessory), is located in the aerial cable between the ULF control unit and the vehicle aerial.
NOTE:
Retrofitting on vehicles from 03/2005. The basic fittings for the compensator are not present from 03/2005. This means that the compensator can only be retrofitted at considerable expense.
Construction The compensator is located in an enclosed housing. The compensator has 3 connections:
- Aerial connector for aerial cable from snap-in adapter
- Aerial connector for aerial cable to GSM antenna
- Connection for switch signal from ULF control unit
How it works
The compensator can be used to compensate for losses in the aerial cable between the snap-in adapter and the GSM antenna. The compensator is witched on by the ULF when terminal R is ON (= ignition lock position 1). The compensator remains switched on until terminal R is switched OFF. The compensator increases the output power to the GSM aerial to a maximum of 2 watts. This increases the distance in the GSM mobile phone network.