- You ship the MULF or MULF 2 bluetooth module to us for repair
- We repair it and perform tests to confirm full functioning
- You pay safely
- We ship the MULF bluetooth unit back to you
The most common faults
- Water damage: symptoms can vary. You can recognise water damage by the oxidation traces on connectors and on the motherboard. If you open up the metal case and you see oxidation traces on the mainboard, please send us clearly focused pictures for a quote.
- The Bluetooth menu is not available – the bluetooth function cannot be enabled
- You cannot connect your phone(s) to the MULF bluetooth module.
- Instead of the phone icon, you see a ‘–‘
- Interferes with the functioning of the CCC iDrive head unit: the CCC iDrive navigation freezes, the CCC executes user commands with a delay, the iDrive controller seems to user commands, the iDrive controller spins freely. More rarely, faulty MULFs can cause the iDrive CCC to reset after displaying the BMW logo. A faulty MULF can also cause interruptions of the navigation voice or of the radio sound. Please also read about the TOP HIFI (Logic 7) sound amplifier, another possible cause for these symptoms, here.
Shipping your bluetooh to us
- Download, fill in and send us the the form from this link
- You only need to send in the MULF or the MULF 2 bluetooth module.
- Your MULF bluetooth should be located in the trunk of your car.
- Add plenty of cushioning (especially around the plastic parts) and use a cardboard box
- Use the shipping details (company name, address & phone) from our contact page
The MULF, MULF 2 and MULF 2 HIGH bluetoothm models are compatible with the following BMW models:
- BMW 1 Series (E81, E82, E87, E88), BMW 3 Series (E90, E91, E92, E93), BMW 5 Series (E60, E61), BMW 6 Series (E63, E64), BMW X5 E70, BMW X6 E71
Where to find the MULF bluetooth module
- BMW 5 Series (E60): Remove the boot trim around the rear left wheel arch. The MULF is mounted vertically.
- 1 & 3 Series (E87, E90): Remove the lower boot lining and look or a module similar to the image we present at the top of this page.
Removing the MULF bluetooth module
Release the 3 separate connectors (the main white plug, the black MOST fibre optic connector and the antenna plug). Remove the fixing nuts and extract the MULF from the nesting bracket.