Remove Head Unit Basic (HU-B)

NOTE: RISK OF DAMAGE, Damage to the head unit. The plug connections of the head unit must not be disconnected if the battery is still connected.

Disconnect all batteries.

NOTE: RISK OF DAMAGE, Damage to the head unit. The hard disk of the head unit can be damaged by vibration.

Carry out mechanical work on the head unit and adjacent components with care.

NOTE: RISK OF DAMAGE Electrostatic discharge. Damage to or destruction of electrical components.

Leave electrical components in original packaging until just before they are installed. Use the original packaging only for any return shipments. Always package removed components straight away.
Read and comply with user information on using the associated special tool 12 7 060.
Only touch the housings of electrical components. Do not touch pins or multi-pin connectors directly.
Wear electrically conductive clothing and antistatic shoes (with ESD symbol).
For additional information see: 61 35... NOTES for ESD protection (electrostatic discharge)

Preliminary works

Deactivate the 48 v ELECTRICAL SYSTEM .
Disconnect all battery EARTH LEADS .
Remove the right instrument panel SIDE PANEL .
Remove the finisher on the right INSTRUMENT PANEL .
Remove the radio operating unit and the air conditioning CONTROL PANEL .

NOTE: RISK OF DAMAGE Sensitive optical fibres. Damaged optical fibres can result in operating failure of the LED.

Do not bend optical fibres too much and do not kink, as well. The minimum permissible bending radius is 25 mm.
Avoid pressure and tensile loads and heat influences on the optical fibre.

Loosen the screws (1) and pull the head unit (2) out of the instrument panel.

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NOTE: RISK OF DAMAGE, Damage to the instrument cluster (KOMBI) or the head unit While releasing and connecting the cable, it could lead to a ground offset. This can generate currents that render the instrument cluster (KOMBI) or the head unit unusable.

While releasing: Release APIX data cable (blue) first.
While connecting: Connect APIX data cable (blue) at the last.

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Unlock and disconnect all the connectors in the marked areas at the head unit (1) in the correct disassembly sequence.
Unlock the latch mechanism (1) and remove the cable clip (2).
Unlock and disconnect connector (3).
Remove head unit (4).

Courtesy of BMW OF NORTH AMERICA, INC.