Procedure I

1. Switch the ignition off.

2. Open the rear left-hand side trim panel in the trunk.

3. Using the special tool (1) (65 5 400), release and remove the navigation computer (for removal instructions, please refer to RA 65 90 510)

4. Check the part number on the label attached to the navigation computer. If the part number is:

65 90 8 386 849, or

65 90 8 385 439, or

65 90 8 386 851 then continue with the step 5.

If the part number differs from those listed above, the navigation computer has already been replaced with the updated part, and NO action is required.

E38 Vehicles:

5. Disconnect two connectors (blue and violet) at the back of the nav. computer.

6. Unclip and remove the computer's plastic trim panel (1).

7. Remove trim panel over the Nav/DSP/CD changer (for removal instructions, please refer to RA 51 47 172).

8. Remove trim panel at the rear left wheel housing (for removal instructions, please refer to RA 51 47 151).

9. Push the computer's connector cable back and route it over the computer's support bracket, towards the wheel housing.

IMPORTANT:
Must be routed over the support, otherwise it will be pinched when the nav. computer is installed.

10. Route the adapter cable as shown on the illustration (above the navigation computer support), connect it into the vehicle harness plug and into the navigation computer. Secure the plug connector (1) and the resistance module (2) with the cable straps.

IMPORTANT:
Make sure that the adapter cable does not rub against any body components, or it is not trapped between the computer and its housing.

11. Reinstalled all removed parts.

12. Perform a functional check: turn ignition ON, from the main menu screen select Navigation.

E39 sedan:

5. Disconnect two connectors (blue and violet) at the back of navigation computer.

6. Remove the navigation connector cable from the computer support housing, and route it towards the radio (down and closer to the taillight).

5. Disconnect two connectors (blue and violet) at the back of navigation computer.

6. Remove the navigation connector cable from the computer support housing, and route it downwards (if a DSP amplifier, or an Alpine CD changer is installed, the adapter cable must be routed downwards and to the left of such an equipment).

7. Route the adapter cable as shown on the illustration, connect it into the vehicle harness plug and into the navigation computer. Secure the plug connector (1) and the resistance module (2) with the cable straps.

IMPORTANT:
Make sure that the adapter cable does not rub against any body components, or it is not trapped between the computer and its housing.

8. Reinstalled all removed parts. Perform a functional check: turn ignition ON, from the main menu screen select Navigation.

E46 Vehicles:

5. Disconnect two connectors (blue and violet) at the back of the navigation computer.

6. Remove trim panel at the rear left wheel housing (for removal instructions, please refer to RA 51 47 151)

7. Push the computer's connector cable back and route it over the computer's support bracket, towards the wheel housing.

IMPORTANT:
Cable must be routed over the support, otherwise it will be pinched when the navigation computer is installed.

8. Route the adapter cable behind the navigation computer, connect it into the vehicle harness plug and into the navigation computer. Secure the plug connector (1) and the resistance module (2) with the cable straps.

IMPORTANT:
Make sure that the adapter cable does not rub against any body components, or it is not trapped between the computer and its housing.

9. Reinstalled all removed parts.

10. Perform a functional check: turn ignition ON, from the main menu screen select Navigation.