Service Procedure
Before starting, make sure your ASIST has been freshly synchronized and all CONSULT-III (C-III) plus upgrades have been installed.
Parts of the Procedure
PART 1:
Record Multi AV Configuration Values of Original AV Control Unit; Replace AV Control Unit
1. Make sure the shift selector is in Park and the parking brake is set.
2. Connect the C-III plus VI to the vehicle.
3. Turn ON the ignition.
NOTE:
You may want to start the engine to keep the battery charged during this procedure.
4. Write down customer's radio station presets. (Presets will be lost during this procedure.)
5. Launch CONSULT-III (C-III) plus on the CONSULT PC.
6. Select Re/programming Configuration.
7. Read the General Precaution.
When finished touch the "Confirmed instructions" box to insert a check mark, then select Next.
8. Select the Manual Selection (Vehicle Name) tab, then select the applicable Model and Year.
9. Select, Select.
10. Confirm the correct Model Name and Model Year are displayed. When finished select Confirm.
11. After system call completes, confirm the correct VIN is displayed.
When finished, select Confirm.
NOTE:
If the VIN displayed is incorrect, input the correct VIN. When finished select Confirm.
12. Select MULTI AV.
13. Select Read/Write Configuration.
14. Select Before Replace ECU.
15. Confirm current configuration and write it down.
^ Configuration can also be printed with the Print Screen button or Screen Capture button.
NOTE:
Configurable options will differ between models. Your screen may look different.
16. Select Save.
NOTE:
It the configuration data cannot be saved, replace the AV Control Unit as instructed in the applicable Electronic Service Manual (ESM) and then proceed to PART 3: Perform Multi AV Initialization shown below in this bulletin.
17. Select End.
18. Replace the AV Control Unit as instructed in the applicable ESM.
PART 2:
Configure the Multi AV System
19. Perform steps 1-10.
20. Select Confirm.
21. Select After Replace ECU.
22. Select OK.
After performing step 22
If an error message does not display:
^ Proceed to PART 5: Confirm Multi AV System Is Operational below.
If an error message does display:
^ Proceed to PART 3: Perform Multi AV Initalization, below.
PART 3 (if needed):
Perform Multi AV Initialization
NOTE:
Leave C-III plus running and the VI connected while performing Multi-AV initialization.
23. Turn OFF the audio system.
24. Put the AV system into System Diagnostic Mode as follows:
a. Press and hold the SETTING button (see Figure 14).
b. While holding the SETTING button, turn the volume control knob 40 clicks or more.
^ The volume control knob can be turned either direction.
^ When the system goes into the System Diagnostic Menu the screen in Figure 15 will display.
25. Select Confirmation/Adjustment.
26. Select Delete Unit Connection Log.
27. Select Yes.
28. Select Initialize Settings.
29. Select Accessory Number Initialization.
30. Select yes.
31. Wait while the system initializes.
^ The screen in Figure 21 will display while initializing.
^ The screen in Figure 22 will display when initialization is complete.
32. Once initialization is complete, reboot the Multi AV system as follows:
a. Turn OFF the ignition.
b. Wait 10 seconds.
C. Turn ON the ignition.
Proceed to PART 4: Manually Configure the Multi AV System below.
PART 4 (if needed):
Manually Configure the Multi AV System
NOTE:
If the screen in Figure 23 is not displayed, click on the Home icon.
33. Select Re/programming Configuration.
34. Read the General Precaution.
When finished, touch the "Confirmed instructions" box to insert a check mark, then select Next.
35. Select the Manual Selection (Vehicle Name) tab, then select the applicable Model and Year.
36. Select Select.
37. Confirm the correct Model Name and Model Year are displayed.
When finished, select Confirm.
38. Confirm the correct VIN is displayed.
When finished, select Confirm.
NOTE:
If the VIN displayed is incorrect input the correct VIN. When finished, select Confirm.
39. Select MULTI AV.
40. Select Manual Configuration.
41. Use the drop down menus to select the Configuration options that were printed or written down in step 15.
^ Configurable options will differ between models. Your screen may look different from Figures 30 and 31.
42. Select Next.
43. Confirm the configuration displayed is correct, then select OK.
44. Start the engine and it let idle briefly.
45. Use C-III plus to clear any codes from the Multi AV system.
a. Select Diagnoses (One System)> Multi AV> Self Diagnosis Results.
b. Clear any codes that may be present.
46. Close C-III plus and disconnect the VI from the vehicle.
PART 5:
Confirm Multi AV System Is Operational
For M37/M56 & M35 Hybrid Vehicles:
^ Confirm the fan, temperature, and air flow modes can be adjusted.
^ Turn ON the radio.
^ Turn the volume knob and made sure the audio volume responds to movement of the knob.
For All Other Applied Vehicles:
^ Put your foot on the brake, start the engine, and move the shift selector to R (reverse).
^ If equipped, make sure the rear view monitor is working correctly.
^ Put the shift selector back into Park.
^ Turn ON the radio.
^ Turn the volume knob and make sure the audio volume responds to movement of the knob.