M2 Fuse Guide

The M2 Fuse Guide details the fuse configurations for various modules in the vehicle, covering over 150 fuses across several tabs.

## Z11 - Integrated Supply Module In the Integrated Supply Module, fuse number 01 provides 15 amps to the DME (DME Main) through a fixed type fuse, connected to terminal F503 and powered by an ignition signal from the FEM. Fuse number 02 also serves the DME (DME Main) but with a higher capacity of 20 amps, while fuse 03 returns to 15 amps for another DME (DME Main) function. The DME responsible for ignition and fuel injection receives 15 amps from fuse 04, and fuse 05 increases this to 20 amps for the same system. Additionally, fuse 06, rated at 40 amps, powers the DME (Valvetronic) via terminal Z11*4B.

## Z7 - Front Power Distribution Box The Front Power Distribution Box includes fuse 18, which is not connected in the US 6MT LCI M2 Executive Package and provides 15 amps through a mini fuse. Fuse 20, at 5 amps, powers the Roof Function Center, while fuse 21, also at 5 amps, is marked as 'Not Used' on the N55 engine. The Exterior Mirror and Switch Block in the driver's door is powered by fuse 22 with a rating of 7.5 amps. Digital Motor Electronics are connected to fuse 23, which is rated at 10 amps. Notably, fuse 24, specific to Neil's car, provides 10 amps to the Passenger Door Soft Close, while fuse 25 powers the Touchbox and Integrated chassis management with 5 amps.

Fuses 30 and 31 are both unconnected, while fuse 32, rated at 5 amps, has no output connector but is linked to seat belts. The Driver's Door Soft Close, again specific to Neil's car, is powered by fuse 26 with 5 amps. Additional fuses include 40 for the left headlight at 15 amps and fuse 42, which powers the electrochromic interior rear view mirror with 5 amps. The Front Electronic Module is connected to fuse 57, rated at 40 amps.

## Z2 - Fuse Carrier, Rear In the Rear Fuse Carrier, fuse 100 powers the right headlight with 15 amps, while fuse 103 connects to a siren with a tilt-alarm sensor at 5 amps. Fuse 106, rated at 40 amps, is not connected in the US 6MT LCI M2 Executive Package. The regulated rear axle differential lock is powered by fuse 108 with 30 amps, and fuse 120, also at 5 amps, powers the Combox for infotainment systems. Fuse 121, rated at 20 amps, connects to the head unit for the iDrive Display and Instrument Cluster.

## A173 - Front Electric Module The Front Electric Module features fuse 4, which provides 30 amps to the passenger power window drive and is switched by the FEM. The central locking system is powered by fuses 5 and 7, both rated at 20 amps, while the driver’s power window drive is also connected to fuse 6 with 30 amps. Fuse 10, at 5 amps, supports the control panel for driver assistance systems and heating/air conditioning.

## Z3 - Fuse Box In the Fuse Box, fuse 500 connects to the Rear Electronic Module with a substantial rating of 50 amps, while fuse 501 serves as a fuse holder rated at 100 amps. Fuse 502 powers the Front Power Distribution Box, also at 100 amps, and fuse 503 connects to the Integrated Supply Module with a high rating of 125 amps. Finally, fuse 504 provides 125 amps to the Front Electronic Module.

## A174 - Rear Electronic Module The Rear Electronic Module includes fuse 80, which powers the rejector circuit for the rear window defogger with 30 amps. Other fuses in this module are generally unassigned or lack specific information in ISTA+, reflecting a variety of functions that are not detailed.

This guide provides a comprehensive overview of the fuses and their respective roles in the M2's electrical system, ensuring that users can locate and understand the power distribution throughout the vehicle.