ITB-14-006

CSC-10054745-2589
OWNER LETTER (typical owner letter)
Dear Infiniti Q50 Owner:
Infiniti is committed to providing the highest levels of product safety, quality and customer satisfaction. With
that in mind, we want to bring to your attention important information regarding a voluntary service campaign to
update the Direct Adaptive Steering™ (DAS) system on your vehicle.
REASON FOR SERVICE CAMPAIGN
In certain conditions such as freezing outside temperatures or a drop in battery charge at startup, the current
DAS system software calibration may switch the system to a manual steering mode that requires a noticeable
increase in steering effort and illuminates one or more error messages on the vehicle information display. To
help prevent this from occurring, Infiniti will update the DAS software and recalibrate the system.
WHAT INFINITI WILL DO
To ensure your continued satisfaction and confidence in your Q50, your authorized Infiniti retailer will perform a
DAS system diagnostic check, software update, and recalibration. In certain instances, your Infiniti retailer may
need to replace the DAS control units. All services will be performed at no cost to you for parts or labor.
This service should take approximately 2 hours to complete, but your Infiniti retailer may require your vehicle for
a longer period of time based upon their work schedule.
WHAT YOU SHOULD DO
Please contact your Infiniti retailer at your earliest convenience in order to set an appointment to have your
vehicle upgraded at no expense to you. Please bring this notice with you to your service appointment. We
understand your time is valuable so your retailer will work with you to make the update as convenient as
possible.
Thank you for your cooperation and we are indeed sorry for any inconvenience this may cause you.
Should you have any questions, our representatives would be pleased to assist you.
 Call 1-800-662-6200 or
 Visit http://www.infinitiusa.com
17/17
ITB14-006

SB-10054745-7043
Reference:
Date:
ITB14-006a
January 27, 2014
VOLUNTARY SERVICE CAMPAIGN
2014 Q50; DIRECT ADAPTIVE STEERING REPROGRAM
The Claims Information in this bulletin has been amended. No other changes have been made.
Please discard previous versions of this bulletin.
CAMPAIGN ID #:
P4201
APPLIED VEHICLES: 2014 Q50 (V37)
2014 Q50 Hybrid (V37)
Check Service COMM to confirm campaign eligibility.
 There are four bulletins with different campaign ID numbers for this campaign.
 Each bulletin is applicable to specific vehicles depending on vehicle options.
 Make sure the correct bulletin (Campaign ID #) is being used.
INTRODUCTION
Infiniti is conducting a Voluntary Service Campaign on certain specific Model Year 2014 Q50 and Q50 Hybrid
vehicles to reprogram the Direct Adaptive Steering (DAST). This service will be performed at no cost to the
customer for parts or labor.
IDENTIFICATION NUMBER
Infiniti has assigned identification number P4201 to this campaign. This number must appear on all
communication and documentation of any nature dealing with this campaign.
DEALER RESPONSIBILITY
Dealers are to correct each vehicle falling within the range of this campaign that enters the service department.
This includes vehicles purchased from private parties or presented by transient (tourist) owners and vehicles in
a dealer’s inventory.
Infiniti Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are properly trained
individuals who have the equipment, tools, safety instruction, and know-how to do a job properly and safely. NOTE: If you believe that
a described condition may apply to a particular vehicle, DO NOT assume that it does. See your Infiniti dealer to determine if this
applies to your vehicle.
1/17
SERVICE PROCEDURE
IMPORTANT: Make sure this campaign (P4201) applies to the vehicle you are working on by using the VIN
and checking Service COMM.
1. Before continuing, it is IMPORTANT to make sure:

ASIST on the CONSULT PC has been synchronized (updated) to the current date.

All CONSULT related software updates (if any) have been installed.
NOTE: The CONSULT PC automatically gets all reprogramming software during ASIST
synchronization.
CAUTION:

Connect the GR8 to the vehicle 12 volt battery and set to ECM power supply mode.
If the vehicle battery voltage drops below 12.0V or rises above 13.5V during reprogramming, the
DAST may be damaged.

Be sure to turn OFF all vehicle electrical loads.
If a vehicle electrical load remains ON, the DAST may be damaged.

Be sure to connect the AC Adapter.
If the CONSULT PC battery voltage drops during reprogramming, the process will be interrupted
and the DAST may be damaged.

Turn off all external Bluetooth® devices (e.g., cell phones, printers, etc.) within range of the
CONSULT PC and the VI. If Bluetooth® signal waves are within range of the CONSULT PC
during reprogramming, reprogramming may be interrupted and the DAST may be damaged.
2. Once all ASIST and CONSULT related updates have been performed, attach the CONSULT PC to the
vehicle.

Connect the plus VI to the CONSULT PC with the USB cable.

Connect the AC adapter to the CONSULT PC.
IMPORTANT: Reprogramming Procedure must be performed 3 separate times to reprogram the control
modules for DAST 1, DAST 2, and EPS/DAST 3.
3. Turn ON the CONSULT PC, and then open CONSULT III plus (C-III plus).
NOTE: Make sure all applications other than C-III plus are closed.
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ITB14-006a
4. Press the ignition switch twice without depressing the brake pedal.

The meter and gauges will illuminate.
CAUTION: Do Not start the engine, the DAST may be damaged. (For Hybrid vehicles, make sure the
Ready light is OFF.)
NOTE: Make sure ALL accessories are turned OFF.
5. Erase all stored DTCs as follows:
a.
b.
c.
d.
Wait for the plus VI to be recognized.
Select Diagnosis (All Systems) and Confirm.
Wait for system call to complete.
Erase all DTCs.
INFORMATION: If you have DTCs related to the Brake or Steering systems that will not erase,
do the following:
a. Turn the ignition OFF.
b. Disconnect the 12V battery negative cable.
c. Wait 5 minutes.
d. Reconnect the negative battery cable.
e. Restart the Service Procedure from the beginning.
6. Go to Re/programming, Configuration.
a. Select the Home button and then YES to return to the screen shown in Figure 1.
b. Select Re/programming, Configuration.
Plus VI is
recognized
Step
5b
Step
6b
Figure 1
3/17
ITB14-006a
7. Check the box for Confirmed Instructions, and then select Next.
Step
7
Figure 2
8. Select Q50 or Q50 Hybrid and 2014, or Automatic Selection(VIN).

If Automatic Selection (VIN) is selected, or the screen in Figure 3 does not display, skip to step 10.
9. Select Select.
This works,
too
Step
8
Step
9
Figure 3
4/17
ITB14-006a
10. Verify the VIN or Chassis # matches that of the vehicle.

If the correct VIN is displayed, select Confirm.
Verify
here
If OK, select
Confirm
Figure 4
11. Select Confirm again.
Step
11
Figure 5
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ITB14-006a
12. Use the page arrows to scroll and select the correct control module to be reprogrammed.
Make sure to reprogram the control modules in this order:
DAST 1, then DAST 2, and then EPS/DAST 3
NOTE: DAST 1 and DAST 2 are shown in Figure 6; EPS/DAST 3 is not shown.
Step
12
Scroll with
arrows
Figure 6
13. Wait for System Call to complete and then select Reprogramming.
Step
13
Figure 7
6/17
ITB14-006a
14. When you get to the screen shown in Figure 8, confirm reprogramming applies as follows:
A. Find the DAST Part Number and write it on the repair order.
NOTE: This is the current DAST Part Number. DAST 1 is shown; DAST 2 and DAST 3 are similar.
Current Part
Number
If a match,
select Save
Figure 8
B. Compare the P/N you wrote down to the numbers in the Current Part Number column of Table A
below:

If there is a match, reprogramming applies. Continue with the reprogramming procedure.

If there is not a match, reprogramming does not apply.
NOTE: If there is no match for DAST 1, there will be no match for DAST 2 or DAST 3.
You can stop. This reprogramming does not apply or it has already been done.
Table A
MODEL
2014 Q50/Q50 Hybrid
CONTROL MODULE
CURRENT PART NUMBER:
DAST 1
28505 – 4GA1B, 4GA1C, 4GA1D
DAST 2
EPS/DAST 3
28505 – 4GA6B, 4GA6C, 4GA6D
285H0 – 4GA5B, 4GA5C, 4GA5D
C. If there is a part number match as specified above, Select Save and then continue with the
reprogramming procedure on the next page.
7/17
ITB14-006a
15. Read the precautions on the C-III plus screen (use page arrow as needed). After reading, select
Confirmed instructions, and then select Next.
Step
15
Figure 9
NOTE:
 In some cases, more than one new P/N for reprogramming is available.
 If more then one P/N is available, the screen in Figure 10 will display.
 Select and use the reprogramming option that does not have the message “Caution! Use ONLY
with ITBXX-XXX”.

If you get this screen and it is blank (no reprogramming listed), it means there is no reprogramming
available for that control module.
DAST 1
Figure 10
8/17
ITB14-006a
16. Verify the Current Part Number matches the Part Number written down in step 14, and then select Next.
Verify Current P/N
above, then select Next
Figure 11
17. If the screen in Figure 12 appears, first select Delete then Confirm, and then Other Operation.

This will erase the Saved Data List and restart the reprogram from step 12. You must go back to step
12.

If no Saved Data List is stored, Figure 13 on the next page will be displayed.
Step
17
Figure 12
9/17
ITB14-006a
18. Confirm battery voltage is correct, and then select Next.
NOTE: Battery voltage must stay within the specified range to make the indicator turn green.
Monitor 12V
battery voltage
here
Must be
“Green” before
selecting Next
Step
18
Figure 13
19. With battery voltage OK (green), select Start.

The reprogramming process begins when Start is selected.
NOTE: For reprogramming to continue, the vehicle 12V battery voltage must stay within 12 volts
and 13.5 volts. .
Monitor 12V
battery voltage
here
Step
19
Figure 14
10/17
ITB14-006a
IMPORTANT: Until the reprogramming has completed:

Do not disconnect the USB cable, although the following message appears:
“Disconnecting CONSULT and VI is Available”




Do not touch the Home button until instructed to.
When the VI is transferring the reprogram to the DAST control module, do not disconnect the VI
from the vehicle even if the PC freezes.
If you need to disconnect the VI, first check the LED on the VI body to confirm that the
communication from the VI to the vehicle has completed and the LED for the vehicle icon is OFF.
If you accidentally disconnect the VI during program writing to the vehicle, the DAST control
module that is being reprogrammed may need to be replaced. Refer to Control Unit Recovery on
the next page.
20. Wait for both bar graphs to complete.
Figure 15
Possible errors that may rarely occur:



If the progress bar freezes at 90% of a complete transfer to the VI and error code “12-1-1NR” is
displayed (see Figure 16 on the next page), turn the ignition OFF, then ON, and then refer to Control
Module Recovery on the next page.
If the progress bar freezes at 90% more than 3 times “on the same DAST control module” but without
Error Code “12-1-1NR”, the DAST control module that is currently being reprogrammed will need to be
replaced.
If the reprogramming does not complete, refer to Control Unit Recovery on the next page.
NOTE: If a DAST control module replacement is required:
 Refer to the appropriate section of the ESM for the procedure to replace and configure a DAST
control module.
 Make sure to perform Read/Write Configuration: Save the Control module’s configuration
before replacement, and then write the configuration to the new control module.
11/17
ITB14-006a
Control Unit Recovery:
Do not disconnect plus VI or shut down Consult III plus if reprogramming does not complete.
If reprogramming does not complete and the “!?” icon displays as shown in Figure 16:

Check battery voltage
(12.0–13.5 V).

Ignition is ON, engine OFF (not
READY).

External Bluetooth® devices are
OFF.

All electrical loads are OFF.

Select retry and follow the on
screen instructions.

Select Retry if Error
Code 12-1-1-NR is
present.
“Retry” may not go through on the
first attempt and can be selected
more than once.
Figure 16
If reprogramming does not complete and the “X” icon displays as shown in Figure 17:

Check battery voltage
(12.0 – 13.5 V).

CONSULT A/C adapter is plugged
in.

Ignition is ON, engine OFF (not
READY).

Transmission is in Park.

All C-III plus / VI cables are securely
connected.

All C-III plus updates are installed.

Select Home, and restart the
reprogram procedure from the
beginning.
Figure 17
12/17
ITB14-006a
21. When the screen in Figure 18 appears, reprogramming is complete.
22. Select Next.
23. Wait for System Call to complete.
Step
22
Figure 18
24. Erase all DTCs as follows:
a. Turn the ignition OFF.

The screen in Figure 19 will read OFF after pressing the power/ignition switch once.
Turn ignition switch OFF position
ON to
OFF
OFF
Figure 19
13/17
ITB14-006a
b. Turn the ignition ON with engine OFF (press switch twice, foot off brake).

The screen in Figure 19 will read ON after pressing the power/ignition switch twice.
NOTE: Do not be confused by any screen messages. At this point, simply turn the ignition ON.
OFF to
ON
Figure 20
c. Wait for the bar graph in the ERASE window to complete 100%.
d. Select Next.
Step
24c
Step
24d
Figure 21
14/17
ITB14-006a
25. Verify the part number has changed (before and after reprogramming part numbers should be different).
a. Print a copy of the screen in Figure 22 by selecting Print.
b. Attach a copy to the repair order.
c. Once a copy has been printed, select Confirm.
Step
25
Step
25a
Step
25c
Figure 22
15/17
ITB14-006a
26. After Confirmation has completed, select Home.
Step
26
Figure 23
27. Repeat the entire reprogramming procedure for DAST 2.
28. Repeat the entire reprogramming procedure for EPS/DAST 3.
After all three reprograms (DAST 1, DAST 2, and EPS/DAST 3) are complete, the procedure is finished.
CLAIMS INFORMATION
Submit a “CM” line claim using the following claims coding:
CAMPAIGN (“CM”) I.D.
P4201
DESCRIPTION
Reprogram DAST
16/17
OP CODE
P42013
FRT
1.0
ITB14-006a
OWNER LETTER (typical owner letter)
Dear Infiniti Q50 Owner:
Infiniti is committed to providing the highest levels of product safety, quality and customer satisfaction. With
that in mind, we want to bring to your attention important information regarding a voluntary service campaign to
update the Direct Adaptive Steering™ (DAS) system on your vehicle.
REASON FOR SERVICE CAMPAIGN
In certain conditions such as freezing outside temperatures or a drop in battery charge at startup, the current
DAS system software calibration may switch the system to a manual steering mode that requires a noticeable
increase in steering effort and illuminates one or more error messages on the vehicle information display. To
help prevent this from occurring, Infiniti will update the DAS software and recalibrate the system.
WHAT INFINITI WILL DO
To ensure your continued satisfaction and confidence in your Q50, your authorized Infiniti retailer will perform a
DAS system diagnostic check, software update, and recalibration. In certain instances, your Infiniti retailer may
need to replace the DAS control units. All services will be performed at no cost to you for parts or labor.
This service should take approximately 2 hours to complete, but your Infiniti retailer may require your vehicle for
a longer period of time based upon their work schedule.
WHAT YOU SHOULD DO
Please contact your Infiniti retailer at your earliest convenience in order to set an appointment to have your
vehicle upgraded at no expense to you. Please bring this notice with you to your service appointment. We
understand your time is valuable so your retailer will work with you to make the update as convenient as
possible.
Thank you for your cooperation and we are indeed sorry for any inconvenience this may cause you.
Should you have any questions, our representatives would be pleased to assist you.
 Call 1-800-662-6200 or
 Visit http://www.infinitiusa.com
17/17
ITB14-006a

SB-10054745-4465
Reference:
Date:
ITB14-006
January 24, 2014
VOLUNTARY SERVICE CAMPAIGN
2014 Q50; DIRECT ADAPTIVE STEERING REPROGRAM
CAMPAIGN ID #:
P4201
APPLIED VEHICLES: 2014 Q50 (V37)
2014 Q50 Hybrid (V37)
Check Service COMM to confirm campaign eligibility.
 There are four bulletins with different campaign ID numbers for this campaign.
 Each bulletin is applicable to specific vehicles depending on vehicle options.
 Make sure the correct bulletin (Campaign ID #) is being used.
INTRODUCTION
Infiniti is conducting a Voluntary Service Campaign on certain specific Model Year 2014 Q50 and Q50 Hybrid
vehicles to reprogram the Direct Adaptive Steering (DAST). This service will be performed at no cost to the
customer for parts or labor.
IDENTIFICATION NUMBER
Infiniti has assigned identification number P4201 to this campaign. This number must appear on all
communication and documentation of any nature dealing with this campaign.
DEALER RESPONSIBILITY
Dealers are to correct each vehicle falling within the range of this campaign that enters the service department.
This includes vehicles purchased from private parties or presented by transient (tourist) owners and vehicles in
a dealer’s inventory.
Infiniti Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are properly trained
individuals who have the equipment, tools, safety instruction, and know-how to do a job properly and safely. NOTE: If you believe that
a described condition may apply to a particular vehicle, DO NOT assume that it does. See your Infiniti dealer to determine if this
applies to your vehicle.
1/17
SERVICE PROCEDURE
IMPORTANT: Make sure this campaign (P4201) applies to the vehicle you are working on by using the VIN
and checking Service COMM.
1. Before continuing, it is IMPORTANT to make sure:

ASIST on the CONSULT PC has been synchronized (updated) to the current date.

All CONSULT related software updates (if any) have been installed.
NOTE: The CONSULT PC automatically gets all reprogramming software during ASIST
synchronization.
CAUTION:

Connect the GR8 to the vehicle 12 volt battery and set to ECM power supply mode.
If the vehicle battery voltage drops below 12.0V or rises above 13.5V during reprogramming, the
DAST may be damaged.

Be sure to turn OFF all vehicle electrical loads.
If a vehicle electrical load remains ON, the DAST may be damaged.

Be sure to connect the AC Adapter.
If the CONSULT PC battery voltage drops during reprogramming, the process will be interrupted
and the DAST may be damaged.

Turn off all external Bluetooth® devices (e.g., cell phones, printers, etc.) within range of the
CONSULT PC and the VI. If Bluetooth® signal waves are within range of the CONSULT PC
during reprogramming, reprogramming may be interrupted and the DAST may be damaged.
2. Once all ASIST and CONSULT related updates have been performed, attach the CONSULT PC to the
vehicle.

Connect the plus VI to the CONSULT PC with the USB cable.

Connect the AC adapter to the CONSULT PC.
IMPORTANT: Reprogramming Procedure must be performed 3 separate times to reprogram the control
modules for DAST 1, DAST 2, and EPS/DAST 3.
3. Turn ON the CONSULT PC, and then open CONSULT III plus (C-III plus).
NOTE: Make sure all applications other than C-III plus are closed.
2/17
ITB14-006
4. Press the ignition switch twice without depressing the brake pedal.

The meter and gauges will illuminate.
CAUTION: Do Not start the engine, the DAST may be damaged. (For Hybrid vehicles, make sure the
Ready light is OFF.)
NOTE: Make sure ALL accessories are turned OFF.
5. Erase all stored DTCs as follows:
a.
b.
c.
d.
Wait for the plus VI to be recognized.
Select Diagnosis (All Systems) and Confirm.
Wait for system call to complete.
Erase all DTCs.
INFORMATION: If you have DTCs related to the Brake or Steering systems that will not erase,
do the following:
a. Turn the ignition OFF.
b. Disconnect the 12V battery negative cable.
c. Wait 5 minutes.
d. Reconnect the negative battery cable.
e. Restart the Service Procedure from the beginning.
6. Go to Re/programming, Configuration.
a. Select the Home button and then YES to return to the screen shown in Figure 1.
b. Select Re/programming, Configuration.
Plus VI is
recognized
Step
5b
Step
6b
Figure 1
3/17
ITB14-006
7. Check the box for Confirmed Instructions, and then select Next.
Step
7
Figure 2
8. Select Q50 or Q50 Hybrid and 2014, or Automatic Selection(VIN).

If Automatic Selection (VIN) is selected, or the screen in Figure 3 does not display, skip to step 10.
9. Select Select.
This works,
too
Step
8
Step
9
Figure 3
4/17
ITB14-006
10. Verify the VIN or Chassis # matches that of the vehicle.

If the correct VIN is displayed, select Confirm.
Verify
here
If OK, select
Confirm
Figure 4
11. Select Confirm again.
Step
11
Figure 5
5/17
ITB14-006
12. Use the page arrows to scroll and select the correct control module to be reprogrammed.
Make sure to reprogram the control modules in this order:
DAST 1, then DAST 2, and then EPS/DAST 3
NOTE: DAST 1 and DAST 2 are shown in Figure 6; EPS/DAST 3 is not shown.
Step
12
Scroll with
arrows
Figure 6
13. Wait for System Call to complete and then select Reprogramming.
Step
13
Figure 7
6/17
ITB14-006
14. When you get to the screen shown in Figure 8, confirm reprogramming applies as follows:
A. Find the DAST Part Number and write it on the repair order.
NOTE: This is the current DAST Part Number. DAST 1 is shown; DAST 2 and DAST 3 are similar.
Current Part
Number
If a match,
select Save
Figure 8
B. Compare the P/N you wrote down to the numbers in the Current Part Number column of Table A
below:

If there is a match, reprogramming applies. Continue with the reprogramming procedure.

If there is not a match, reprogramming does not apply.
NOTE: If there is no match for DAST 1, there will be no match for DAST 2 or DAST 3.
You can stop. This reprogramming does not apply or it has already been done.
Table A
MODEL
2014 Q50/Q50 Hybrid
CONTROL MODULE
CURRENT PART NUMBER:
DAST 1
28505 – 4GA1B, 4GA1C, 4GA1D
DAST 2
EPS/DAST 3
28505 – 4GA6B, 4GA6C, 4GA6D
285H0 – 4GA5B, 4GA5C, 4GA5D
C. If there is a part number match as specified above, Select Save and then continue with the
reprogramming procedure on the next page.
7/17
ITB14-006
15. Read the precautions on the C-III plus screen (use page arrow as needed). After reading, select
Confirmed instructions, and then select Next.
Step
15
Figure 9
NOTE:
 In some cases, more than one new P/N for reprogramming is available.
 If more then one P/N is available, the screen in Figure 10 will display.
 Select and use the reprogramming option that does not have the message “Caution! Use ONLY
with ITBXX-XXX”.

If you get this screen and it is blank (no reprogramming listed), it means there is no reprogramming
available for that control module.
DAST 1
Figure 10
8/17
ITB14-006
16. Verify the Current Part Number matches the Part Number written down in step 14, and then select Next.
Verify Current P/N
above, then select Next
Figure 11
17. If the screen in Figure 12 appears, first select Delete then Confirm, and then Other Operation.

This will erase the Saved Data List and restart the reprogram from step 12. You must go back to step
12.

If no Saved Data List is stored, Figure 13 on the next page will be displayed.
Step
17
Figure 12
9/17
ITB14-006
18. Confirm battery voltage is correct, and then select Next.
NOTE: Battery voltage must stay within the specified range to make the indicator turn green.
Monitor 12V
battery voltage
here
Must be
“Green” before
selecting Next
Step
18
Figure 13
19. With battery voltage OK (green), select Start.

The reprogramming process begins when Start is selected.
NOTE: For reprogramming to continue, the vehicle 12V battery voltage must stay within 12 volts
and 13.5 volts. .
Monitor 12V
battery voltage
here
Step
19
Figure 14
10/17
ITB14-006
IMPORTANT: Until the reprogramming has completed:

Do not disconnect the USB cable, although the following message appears:
“Disconnecting CONSULT and VI is Available”




Do not touch the Home button until instructed to.
When the VI is transferring the reprogram to the DAST control module, do not disconnect the VI
from the vehicle even if the PC freezes.
If you need to disconnect the VI, first check the LED on the VI body to confirm that the
communication from the VI to the vehicle has completed and the LED for the vehicle icon is OFF.
If you accidentally disconnect the VI during program writing to the vehicle, the DAST control
module that is being reprogrammed may need to be replaced. Refer to Control Unit Recovery on
the next page.
20. Wait for both bar graphs to complete.
Figure 15
Possible errors that may rarely occur:



If the progress bar freezes at 90% of a complete transfer to the VI and error code “12-1-1NR” is
displayed (see Figure 16 on the next page), turn the ignition OFF, then ON, and then refer to Control
Module Recovery on the next page.
If the progress bar freezes at 90% more than 3 times “on the same DAST control module” but without
Error Code “12-1-1NR”, the DAST control module that is currently being reprogrammed will need to be
replaced.
If the reprogramming does not complete, refer to Control Unit Recovery on the next page.
NOTE: If a DAST control module replacement is required:
 Refer to the appropriate section of the ESM for the procedure to replace and configure a DAST
control module.
 Make sure to perform Read/Write Configuration: Save the Control module’s configuration
before replacement, and then write the configuration to the new control module.
11/17
ITB14-006
Control Unit Recovery:
Do not disconnect plus VI or shut down Consult III plus if reprogramming does not complete.
If reprogramming does not complete and the “!?” icon displays as shown in Figure 16:

Check battery voltage
(12.0–13.5 V).

Ignition is ON, engine OFF (not
READY).

External Bluetooth® devices are
OFF.

All electrical loads are OFF.

Select retry and follow the on
screen instructions.

Select Retry if Error
Code 12-1-1-NR is
present.
“Retry” may not go through on the
first attempt and can be selected
more than once.
Figure 16
If reprogramming does not complete and the “X” icon displays as shown in Figure 17:

Check battery voltage
(12.0 – 13.5 V).

CONSULT A/C adapter is plugged
in.

Ignition is ON, engine OFF (not
READY).

Transmission is in Park.

All C-III plus / VI cables are securely
connected.

All C-III plus updates are installed.

Select Home, and restart the
reprogram procedure from the
beginning.
Figure 17
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21. When the screen in Figure 18 appears, reprogramming is complete.
22. Select Next.
23. Wait for System Call to complete.
Step
22
Figure 18
24. Erase all DTCs as follows:
a. Turn the ignition OFF.

The screen in Figure 19 will read OFF after pressing the power/ignition switch once.
Turn ignition switch OFF position
ON to
OFF
OFF
Figure 19
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b. Turn the ignition ON with engine OFF (press switch twice, foot off brake).

The screen in Figure 19 will read ON after pressing the power/ignition switch twice.
NOTE: Do not be confused by any screen messages. At this point, simply turn the ignition ON.
OFF to
ON
Figure 20
c. Wait for the bar graph in the ERASE window to complete 100%.
d. Select Next.
Step
24c
Step
24d
Figure 21
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25. Verify the part number has changed (before and after reprogramming part numbers should be different).
a. Print a copy of the screen in Figure 22 by selecting Print.
b. Attach a copy to the repair order.
c. Once a copy has been printed, select Confirm.
Step
25
Step
25a
Step
25c
Figure 22
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26. After Confirmation has completed, select Home.
Step
26
Figure 23
27. Repeat the entire reprogramming procedure for DAST 2.
28. Repeat the entire reprogramming procedure for EPS/DAST 3.
After all three reprograms (DAST 1, DAST 2, and EPS/DAST 3) are complete, the procedure is finished.
CLAIMS INFORMATION
Submit a “CM” line claim using the following claims coding:
CAMPAIGN (“CM”) I.D.
P4201
DESCRIPTION
Reprogram DAST
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OP CODE
P42010
FRT
1.0
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OWNER LETTER (typical owner letter)
Dear Infiniti Q50 Owner:
Infiniti is committed to providing the highest levels of product safety, quality and customer satisfaction. With
that in mind, we want to bring to your attention important information regarding a voluntary service campaign to
update the Direct Adaptive Steering™ (DAS) system on your vehicle.
REASON FOR SERVICE CAMPAIGN
In certain conditions such as freezing outside temperatures or a drop in battery charge at startup, the current
DAS system software calibration may switch the system to a manual steering mode that requires a noticeable
increase in steering effort and illuminates one or more error messages on the vehicle information display. To
help prevent this from occurring, Infiniti will update the DAS software and recalibrate the system.
WHAT INFINITI WILL DO
To ensure your continued satisfaction and confidence in your Q50, your authorized Infiniti retailer will perform a
DAS system diagnostic check, software update, and recalibration. In certain instances, your Infiniti retailer may
need to replace the DAS control units. All services will be performed at no cost to you for parts or labor.
This service should take approximately 2 hours to complete, but your Infiniti retailer may require your vehicle for
a longer period of time based upon their work schedule.
WHAT YOU SHOULD DO
Please contact your Infiniti retailer at your earliest convenience in order to set an appointment to have your
vehicle upgraded at no expense to you. Please bring this notice with you to your service appointment. We
understand your time is valuable so your retailer will work with you to make the update as convenient as
possible.
Thank you for your cooperation and we are indeed sorry for any inconvenience this may cause you.
Should you have any questions, our representatives would be pleased to assist you.
 Call 1-800-662-6200 or
 Visit http://www.infinitiusa.com
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