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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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Related Manuals for Bimmer Retrofit Combox MULF2HI
Summary of Contents for Bimmer Retrofit Combox MULF2HI
- Page 1 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.
- Page 2 Remove the left side cover as shown on the pictures. Please note that there will be 4 plastic clips around the cover which needs to be removed.
- Page 3 Both modules (TCU and MULF) are located under this cover. 3. For E71 BMW models TCU is located at the same place as on the E70 models, however the MULF module is located under the rear seat mid compartment. Please see pictures below:...
- Page 4 Red circles on the pictures shows the screws which must be removed in order to get the mid compartment removed. First remove both rear seats, after that unscrew all screws on the sides of the mid compartment and after that pull it up. Under it you will see another cover which also should be removed.
- Page 7 4. It is important to understand that Combox is always installed instead of TCU and/or MULF modules. You cannot have TCU + Combox or MULF + Combox as it is against the BMW network topology. Also both TCU and MULF (if installed) are connected to the Optical MOST ring in the vehicle.
- Page 8 Remove the middle part out of it: Now simply terminate your unused MOST connector by plugging it in to the MOST terminator...
- Page 9 6. Both connectors which are used for TCU and MULF will be needed for the Combox connection. Please see the chart below on how to properly interconnect the cables from Combox to the existed connectors. If you have E6x, E70 or E9x series than you will simply connect all cable at one place.
- Page 10 Ground AUX GND AUX NF L AUX NF R AUX BLNC TEL Wake Up MIC+ MIC- MIC BLNC TEL CRASH NOTRUF S NOTRUF L LS NOTR+ LS NOTR- CAN HIGH Connect to PDC Module CAN LOW Connect to PDC Module 2.
- Page 11 Power T30 Ground AUX GND connect here the pin from your new AUX IN connector if installed AUX NF L connect here the pin from your new AUX IN connector if installed AUX NF R connect here the pin from your new AUX IN connector if installed AUX BLNC TEL Wake Up...
- Page 12 3. When MULF only present in vehicle connect as follows: Combox MULF2HI X34130 Signal X14133M Power T30 Ground AUX GND AUX NF L AUX NF R AUX BLNC TEL Wake Up MIC+ connect here pin from your newly installed microphone MIC- connect here pin from your newly installed microphone MIC BLNC...
- Page 13 After installation is done your Combox must be connected to the vehicle’s wiring and installed as on the pictures:...
- Page 14 9. Last step to the Combox installation should be the proper Combox and CIC coding. If not done yet please contact us for the coding. For all questions or other inquires please contact us at: info@bimmerretrofit.com or visit: www.bimmerretrofit.com Copyrighted © 2012 Bimmer Retrofit Company. All rights reserved.
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