Emergency Antenna: E60, E61, E63, E64, E90

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

>E60, E63, E64, E90 The emergency antenna is located under the rear window shelf (parcel shelf).

> E61 The emergency antenna is located behind the right-hand luggage compartment trim panel, under the storage tray.

> E91 The emergency antenna is located on the rear left wheel arch (at the level of the C-pillar).

Construction

Fig 1: Locating Emergency Antenna: E60, E61, E63, E64, E90 Components

Courtesy of BMW OF NORTH AMERICA, INC.

How it works

The emergency antenna is connected directly to the TCU (Telematic Control Unit). In the event of an accident, a crash signal will be sent to the TCU. The crash signal is transmitted by the following control unit:

> E60, E61, E63, E64 up to 09/2005: by the SGM control unit (safety and gateway module)

> E60, E61, E63, E64 from 09/2005 by the crash safety module (ACSM) (ACSM stands for "Advanced Crash Safety Module", also known as the crash safety module)

> E90, E91 by the MRS control unit (multiple restraint system)

The TCU the triggers an automatic emergency call. If the emergency call cannot be transmitted via the SDARS aerial or the telephone and GPS antenna, the TCU will switch to the emergency antenna.

Switching to the emergency antenna

The system will only switch to the emergency antenna if a crash signal is present. It will not switch in the event of interference in transmission or reception on the telephone aerial.