

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 plus VI is transferring the reprogram to the DAST control module, do not disconnect the
plus VI from the vehicle even if the PC freezes.
If you need to disconnect the plus VI, first check the LED on the plus VI body to confirm that the
communication from the plus 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 plus VI and error code “12-1-1NR” is
displayed as shown in 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”, replace only the DAST control module that is currently being reprogrammed,
and then reprogram to the most current software.
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 write the correct configuration to the new control module.
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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 / plus VI cables are
securely connected.



All C-III plus updates are installed.



Select Home, and then 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 “ignition” OFF.


The screen in Figure 19 will read OFF after pressing the power switch once.

Turn ignition switch OFF position

ON to
OFF

OFF

Figure 19

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b. Turn the ignition ON (engine OFF / Not Ready).


The screen in Figure 19 will read ON after pressing the power 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 the 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, go to step 29 on the next
page.

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29. Check for DTCs in DAST 1, DAST 2, and EPS/DAST 3.
a. Open C-III plus, and then select Diagnosis (All Systems) and Confirm.
b. Wait for system call to complete.
c. Check for stored DTCs.


If no DTCs are stored, go to PART 4 on the next page.



If C13C0 or C13C2 are stored in DAST 1 or DAST 2, go to DAST DTCs on page 33.



If DTC C13F2 is stored in DAST 1, DAST 2, or DAST 3 as current:
 Then, at least one of the DAST control modules did not complete the reprogramming correctly.
 Perform reprogramming again for the DAST control module that Does Not have this code.



If only DTCs other then the ones listed above are stored, erase DTCs and go to PART 4 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 write the correct configuration to the new control module.

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PART 4: Calibration and Confirmation Procedures
NOTE: PART 4 includes the following:
 DAST CALIBRATION (MODE1)
 ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
 Self-Diagnosis Check
 Confirmation of EPS/DAST 3 ANGLE 1

DAST CALIBRATION (MODE1)
CAUTION:


Never move the vehicle during DAST CALIBRATION (MODE1) because the steering gear is held
in a neutral position until the ignition switch is turned OFF.



Never rotate the steering wheel more than 120 degrees just after DAST CALIBRATION (MODE1)
has been completed because the spiral cable will be damaged.

WARNING: Be careful of moving parts. The steering wheel and front wheels will move automatically by
themselves after starting DAST CALIBRATION (MODE1).

Before starting Calibration Mode1:


Place the vehicle on an alignment rack and then remove the pins from the turn tables so they are
allowed to move freely, or place the vehicle on a lift so that the tires do not touch the ground.



Place the steering wheel tilt to the highest level.



Connect a battery charger to the vehicle battery set to a low charge rate.

NOTE: This calibration procedure will be performed twice completely through.
IMPORTANT: Do Not turn the ignition OFF at the end of the second time through.

1. Make sure the plus VI is still connected to the vehicle and to the CONSULT PC with the USB cable.

2. Make sure the AC adapter is still connected to the CONSULT PC.

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3. Turn the ignition ON (engine OFF / Not Ready).


IMPORTANT: Do Not start the engine (for Hybrid models the READY light must be OFF).

4. Turn ON the CONSULT PC, and then open C-III plus (if not already open).

5. On the C-III plus screen, select Diagnosis (All Systems). After system call has completed, select
EPS/DAST 3 >> Work support >> DAST CALIBRATION (MODE1). See Figure 24.

Step
5

Step
6

Figure 24

6. Select START, and then START a second time to begin DAST CALIBRATION (MODE1).


Do not rotate the road wheels during the DAST calibration.

WARNING: Be careful of moving parts. The steering wheel and front wheels will move automatically by
themselves after starting DAST CALIBRATION (MODE1).

NOTE: If DAST CALIBRATION (MODE1) will not start, refer to DAST DTCs on page 33.

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7. When Auto steering has completed, center the steering wheel to the neutral (straight ahead) position, and
then select Start again (see Figure 25).
IMPORTANT: The steering wheel must be positioned in the neutral (straight ahead) position, for step 7
above, to ensure that the steering wheel will be centered when driving straight.

CAUTION: When DAST CALIBRATION (MODE1) has completed, the steering wheel is disconnected from
the steering gear and the force feedback of the steering is reduced. Never turn the steering wheel
beyond 120 degrees otherwise the spiral cable will be damaged.

Step
7

Figure 25

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8. Select End.

Step
8

Figure 26

9. Turn the ignition switch OFF.
10. With the C-III plus still connected, repeat steps 1-8 a second time, but Do Not turn the ignition OFF after
step 8, and then proceed to step 11.
11. Select the BACK button twice, and then select Yes to “Delete results”.


After system call completes, proceed to ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL
POSITION on the next page.

IMPORTANT: Do Not turn the ignition OFF.


If the ignition is turned OFF between the DAST CALIBRATION (MODE1) and ADJUSTMENT OF
STEERING ANGLE SENSOR NEUTRAL POSITION, the procedure for DAST CALIBRATION
(MODE1) must be started over from step 1.

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ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
1. With C-III plus in Diagnosis (All Systems), select ABS >> Work support >> ST ANGLE SENSOR
ADJUSTMENT, and then select START.
2. When the message “Waiting for your operation…” is displayed, select Start.
IMPORTANT: Do Not touch the steering wheel while adjusting steering angle sensor.

Step
2

Step
3

Figure 27

3. When the message COMPLETE is shown (after approx. 5 seconds), select End.

4. Turn the ignition switch OFF and wait at least 10 seconds.

5. Disconnect the battery charger from the vehicle 12V battery.

6. Go to Self-Diagnosis Check on the next page.

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SELF-DIAGNOSIS Check
1. Start the engine or place in READY mode (turn ignition ON with brake pressed).
2. Check for DTCs in DAST 1, DAST 2, and EPS/DAST 3 as follows:
A. On C-III plus, return to the Home screen.
B. Select Diagnosis (All Systems), and then select Confirm.
C. Wait for system call to complete.
D. Check for stored DTCs.


If no DTCs are stored, go to CONFIRMATION of EPS/DAST 3 ANGLE 1 on the next page.



If DTCs C13E9-00, C13EB-00, and/or C13F0-00 are stored:
a. Erase all DTCs.
b. Change the steering wheel tilt to a slightly lower position.
c. Perform DAST CALIBRATION (MODE1) again.
d. Perform SELF-DIAGNOSIS Check again.
e. Repeat a – d above until no DTCs are stored.
f.

Go to CONFIRMATION of EPS/DAST 3 ANGLE 1 on the next page.

IMPORTANT: Do Not drive the vehicle.

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CONFIRMATION of EPS/DAST 3 ANGLE 1
NOTE: At this point the ignition should still be ON with the engine running or the READY light ON.
1. With C-III plus in Diagnosis (All Systems), select EPS/DAST 3 >> DATA MONITOR >> ANGLE 1,and
then check the value of ANGLE 1 (see Figure 28).


ANGLE 1 should be within the standard value shown below.



If ANGLE 1 is not within the standard value:
a. Change the steering wheel tilt to a slightly lower position.
b. Perform DAST CALIBRATION (MODE1) again.
c. Perform CONFIRMATION of EPS/DAST 3 ANGLE 1 again.
d. Repeat a – c above until ANGLE 1 is within the standard value.

Monitor item
ANGLE 1

Standard value
between -4.4 and 4.4

Step
1

Figure 28
2. Disconnect C-III plus from the vehicle.
3. Procedure is complete.

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DAST DTCs
NOTE: Perform the following steps only if:
 DTCs are stored for DAST 1 and/or DAST 2.
 DAST CALIBRATION (MODE1) will not start.
1. Check DTCs for DAST 1.


If C13C0 and C13C2 are detected as current on DAST 1, replace the control module for DAST 2.



If DTCs can not be read (DAST 1 is not listed), go to step 2 and check DTCs for DAST 2.

2. Check DTCs for DAST 2.


If C13C0 and C13C2 are detected as current on DAST 2, replace the control module for DAST 1.



If DTCs can not be read (DAST 2 is not listed), turn the ignition switch OFF and then back ON. Then go
back to Check DTCs for DAST 1 (step 1) again.
 If step 1 and step 2 are repeated more than 5 times and there is still no DTCs stored/listed, replace
the control module for DAST 3.

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 write the correct configuration to the new control module.

INFORMATION: If DTCs, other than the ones listed above, are stored and will not erase; do the following:
a.
b.
c.
d.
e.

Turn the ignition OFF.
Disconnect the 12V battery negative cable.
Wait 5 minutes.
Reconnect the negative battery cable.
Return to where you were in the Service Procedure.

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PARTS INFORMATION
DESCRIPTION
DAST 1 Control Module
(Steering Angle Main Control Module)
DAST 2 Control Module
(Steering Angle Sub Control Module)
EPS/DAST 3 Control Module
(Steering Force Control Module)

PART #

QUANTITY

28505 - 4GA1J

1

28505 - 4GA6J

1

285H0 - 4GA5J

1

CLAIMS INFORMATION
Submit a Campaign (CM) line claim using the following claims coding:
CAMPAIGN (“CM”) I.D.
P4203

DESCRIPTION
DAST Replace Modules, Reprogram, &
Recalibrate

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OP CODE

FRT

P42030

3.0 hrs

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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 modules. 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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