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.
