Bimmer Retrofit Combox MULF2HI User Manual (English)

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Combox Installation Instruction for E6x, E7x, E8x and E9x Series BMW

This is universal instruction for standard E series installation. It also can be used on F-series.

1. Please verify if your vehicle is equipped with the TCU and MULF modules. This is important step

which will let you understand what needs to be removed for proper Combox installation.

For the case when your vehicle is equipped with both TCU and MULF modules (option 6FL and

options 639 or 633 are present) you will have to disconnect or remove your MULF module and

install Combox module instead of the TCU.

For the case when your vehicle is equipped only with TCU module (option 633, 639 or 644) you

will have to remove it and install Combox instead of TCU.

For the case when your vehicle is equipped with the MULF only (6FL or 6FL + 644 options) you

will have to install Combox and disconnect or remove MULF.

2. Your TCU and MULF modules are located at the rear left compartment for BMW E70 models. For

E6x and E9x models it is located in the trunk under the floor near rear seat. We show the

installation on the example of the E7x series. Please note that for the other models of E-series it

will be a bit different in terms of module location. Electrical wiring and component connection

will remain the same for all models of E series.

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Bimmer Retrofit Combox MULF2HI Specifications

General

Category	Automobile Accessories
USB Support	Yes
Voice Control	Yes
Audio Streaming	Yes
Phone Connectivity	Yes
Functionality	Enables Bluetooth, USB, and voice control features
Bluetooth Version	Bluetooth 2.0
Features	Bluetooth connectivity, USB support, voice control, audio streaming
Installation	Requires professional installation