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Sonar Control Unit Recovery

Do not disconnect the VI or shut down CONSULT if reprogramming does not
complete.

If reprogramming does not complete and the “!?” icon displays, as shown in
Figure 22:


Check battery voltage
(12.0 - 13.5 V).



Ignition is ON, engine OFF.



External Bluetooth® devices are OFF.



All electrical loads are OFF.



Select retry and follow the on
screen instructions.



“Retry” may not go through on first
attempt and can be selected more
than once.

EXAMPLE

Figure 22

If reprogramming does not complete and the “X” icon displays, as shown in
Figure 23:


Check battery voltage
(12.0 - 13.5 V).



CONSULT A/C adapter is plugged in.



Ignition is ON, engine OFF.



Transmission is in Park.



All CONSULT VI cables are securely
connected.



All C-III plus updates are installed.



Select Home, and restart the
reprogram procedure from the
beginning.

EXAMPLE

Figure 23

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38.

Perform Erase All DTCs as follows:
a. Turn the ignition OFF.
b. Turn the ignition ON.

ON

Turn ignition OFF > ON
Figure 24

HINT: When the entire reprogramming process is complete, the screen in Figure 25 on
page 17 will display.

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39.

Verify the before and after part numbers are the same.
HINT: For this reprogram, the before and after reprogramming part numbers should
be the same. This is not an error.

40.

Print a copy of the screen below (Figure 25) and attach it to the repair order for
warranty documentation.
HINT: If you cannot print the screen:
a. Select Screen Capture.
b. Name the file.
c. Save the file in My Documents.
o A copy of the screen is now saved in the CONSULT PC. It can be retrieved
and printed at a later time.

41.

Select Confirm.

28538XXXXX
28538-XXXXX

These numbers should be
the same

xxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxx

xxxxxxxxxxxxxxxxxx

Figure 25

42.

Select Home (screen not shown).

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Sonar Control Unit Configuration

43.

Select Re/programming, Configuration.

Figure 26

HINT: CONSULT screens for steps 44-47 are not shown.

44.

Read the precautions on the CONSULT screen, check the box for Confirmed
Instructions, and then select Next.

45.

Select Automatic Selection(VIN).

46.

Select Confirm.

47.

Select Confirm, again.

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48.

Select SONAR.

Figure 27

49.

Select After ECU Replacement under VEHICLE CONFIGURATION.

Figure 28

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50.

Select Manual selection.

Figure 29

51.

Select the applicable Type ID.


52.

Refer to the EPC to determine the applicable Type ID.

Select Next.

28547 - XXXXX
28547 - XXXXX
28547 - XXXXX
28547 - XXXXX
28547 - XXXXX

Figure 30

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53.

Confirm the correct Type ID is displayed, and then select OK.

28547 - XXXXX

Figure 31

54.

Select End.

28547 - XXXXX

Figure 32

55.

Select Home (screen not shown).

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56.

Select Diagnosis (One System).

Figure 33

57.

Select SONAR.

Figure 34

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58.

Select ERASE.

Figure 35
59.

Select ECU Identification.

60.

Confirm the SOFTWARE # (Figure 36).


If the SOFTWARE # is “L139”, proceed to step 61 on page 24.



If the SOFTWARE # is not “L139”, reprogramming did not successfully complete.
Go back to step 18 on page 6 and perform the procedure again.

28538XXXXX
XXXX

Confirm this number is
“L139”

Figure 36
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61.

Select Home.

28538XXXXX
XXXX

Figure 37

62.

Select Diagnosis (All Systems).

Figure 38

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HINT: CONSULT screens for steps 63-65 are not shown.
63.

Select Automatic Selection(VIN).

64.

Select Confirm.

65.

Select Confirm, again.

66.

Turn the ignition OFF, and then turn the ignition ON.

67.

Select ERASE.

Figure 39
68.

Close CONSULT.

69.

Turn the ignition OFF.

70.

Disconnect the VI from the vehicle.

71.

Start the engine.

72.

Check that the RAB system setting can be enabled/disabled on the combination
meter.

73.

Test drive the vehicle and make sure it operates correctly and the MIL is OFF.


If the MIL comes ON, go back to the ESM for further diagnostic information.



Diagnosis and repairs beyond SONAR reprogramming are not covered by this
bulletin.

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CLAIMS INFORMATION
Submit a Primary Part (PP) type line claim using the following claims coding:
DESCRIPTION

PFP

OP CODE

SYM

DIA

FRT

Reprogram Sonar Control Unit

(1)

RXC8AA

ZE

32

0.8

(1) Reference the electronic parts catalog and use the Sonar Control Unit (28532-*****) as
the Primary Failed Part (PFP).

AMENDMENT HISTORY
PUBLISHED DATE REFERENCE

DESCRIPTION

August 17, 2022

NTB22-073

Original bulletin published

January 24, 2023

NTB22-073A

Changes made throughout

May 10, 2024

NTB22-073B

APPLIED DATES added, and battery voltage
range updated on pages 2, 12, and 15

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