Power supply E60, E61, E63, E64: Introduction

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2006 BMW Z4, 2006 BMW M3, 2006 BMW M Roadster, 2006 BMW M Coupe, and 2006 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

The power supply on the BMW 5- and 6-Series is similar to that on the E65. However, the 5- and 6-Series do not have the power module from the E65. A network of hardware and software assumes the role of energy management. The energy management system monitors and controls the vehicle's energy requirements, both during a journey and when stationary.

The energy management system comprises the functions of the electric energy management system and the power management functions contained therein. For more information, refer to POWER SUPPLY, SYSTEM OVERVIEW: E60, E61, E63, E64 .

From 09/2005, the vehicle electrical system has been modified. No byteflight data bus This modification means that some control units are discontinued and that some control unit functions are integrated into new control units. The new body gateway module (KGM) supersedes the safety and gateway module (SGM) previously fitted, the door modules and the micro-power module. For more information, refer to BODY-GATEWAY MODULE E60, E61, E63, E64

The most important components and functions of the electric energy management system are:

The intelligent battery sensor (IBS) for continuous measurement of the battery's values.
The software of the power management system in the digital engine electronics (DME) or digital diesel electronics (DDE) and in the IBS.
The terminal 30g relay, which is actuated by the Car Access System (CAS).
The micro-power module (MPM), which is located between the front and rear power distributors.
New features of the power supply are:
IBS
Terminal 30g relay (terminal 30 active)
MPM
Earth point on "reduced-weight aluminum front end" (GRAV)
Advantages of the power supply are:
Precise identification of the "State of Charge" (SoC) and "State of Health" (SoH) of the battery by the power management system.
IBS designed for use with different assembly groups.
Reduced off-load current: The consumers on terminal 30g are switched off in a defined manner by the terminal 30g relay.
A defined connection between the aluminum front end and the steel bodywork with the GRAV earth point in the engine compartment.
The GRAV earth point improves the vehicle's electromagnetic compatibility (EMC).
More headroom in the rear of the vehicle. The routing of the battery cables in the outer area allows the seats and carpets in the rear of the vehicle to be installed with reduced height.