ULF I-bus E39, E46, E53, E83, E85, MINI: overview of fault patterns

The following fault patterns are covered in this test module:

Programming / coding / diagnosis

• The ULF control unit cannot be activated via diagnosis.
  

Bluetooth link / Bluetooth connection

• The mobile phone cannot be connected to the vehicle.
  

Telephony

• Sporadically, the telephone system cannot be operated at the display.
  
• The mobile phone cannot be operated.
  

Voice quality / audio output

• The caller hears no voice signal.
  
• The caller is not heard.
  
• Poor voice quality
  
• Sporadic call interruptions
  

Snap-in adapter / eject box (base plate)

• The mobile phone is not charged.
  

Telephone book

• The telephone book is not transferred.
  
• The telephone book is only partially transferred.