IMPORTANT: Risk of damage! There is a hard disk installed in the head unit.
Carry out mechanical work on the head unit and adjacent components with care.
Avoid subjecting the head unit to vibration/shocks.
IMPORTANT: Read and comply with NOTES on protection against electrostatic damage (ESD protection).
NOTE: Comply with notes and instructions on HANDLING OPTICAL FIBRES.
Necessary preliminary work:
NOTE: Picture for example purposes only!
Unfasten screws (2).
Pull head unit (3) out of guide.
Installation note: Make sure head unit (3) is correctly seated in guide lugs (1).
Fig. 6: Identifying Head Unit, Screws, And Guide Lugs
Set the protective nonwoven material (1) aside as shown.
Unlock plug connections.(2) and disconnect.
Remove head unit (3).
Fig. 7: Identifying Head Unit And Connections
Only for US models with satellite radio: When replacing the head unit, additional work is required!
Replacement: Carry out VEHICLE PROGRAMMING AND ENCODING.
OVERVIEW OF AUDIO COMPONENTS
Fig. 8: Overview Of Audio Components
REMOVING AND INSTALLING (REPLACING) AMPLIFIER (TOP HIFI SYSTEM)
IMPORTANT: Read and comply with NOTES on protection against electrostatic discharge (ESD protection).
NOTE: Comply with notes and instructions on HANDLING OPTICAL FIBRES.
Necessary preliminary work
Release screw (1).
Remove amplifier (2) in direction of arrow from holder (3).
Unlock plug connections and disconnect.
Fig. 9: Identifying Screw, Amplifier And Holder
NOTE: Until 09/2009 a Top Hifi amplifier with a different pin assignment is installed!
Install cable jumper consisting of socket (1) (BMW Parts Service 6901844) and wire jumper (2) in connector (3).
Create wire jumper (2) from wire (cross-section 0.75 mm2 ) and two stops (BMW Parts Service 1393724). Then connect pins 1 and 2 in socket (1) with wire jumper (2).
Fig. 10: Identifying Cable Jumper, Wire Jumper, Connector And Connector
Chamber
NOTE: Connector chamber (4) is not included in current version and remains unused in new replacement Top HiFi amplifier!
NOTE: Picture for example purposes.
Installation note: Tabs (1) must be correctly slid into guide (2).
Check that amplifier (3) is securely seated.
Fig. 11: Identifying Tabs, Guide And Amplifier
Replacement
Carry out VEHICLE PROGRAMMING AND ENCODING.