with Laser
Guide

Install Steel Clip
over FLR-20

Magnetic Feet
(3)

K096579
Shorter
Bar

ALIGNMENT TOOLS AVAILABLE

C1.1

Park the vehicle on a level floor. Air suspensions must be charged and stable. Install the steel clip supplied
over the radar sensor.

C1.2

Attach the alignment tool onto the clip using its magnetic feet. Inspect to make sure that the alignment tool is
approximately horizontal width-wise.

C1.3

Activate the lateral alignment laser light “on” switch. Place the tool into position for the first measurement. (The
tool will be reversed when the second measurement is made.)

Appendix C

49

Appendix C
Bendix FLR-20™ Radar Alignment
™

C Lateral Alignment Using The Bendix® Alignment Clip And Tool (Continued)
C1.4

Locate symmetrical points on the front of the vehicle that are at least 12 inches (30 mm) from the vehicle’s
center line (such as the tow hooks). Using a ruler or tape measure, record the distance from each side to the
laser light line.

LATERAL ALIGNMENT LEFT MEASUREMENT

NOTE: The technician must be careful during the laser positioning process to double-check the values measured on each
side of the truck. Be sure to check back and forth for each side of the radar sensor several times to ensure accuracy.
C1.5

Repeat the process for the opposite side, reversing the tool, so that the laser light points to the other side of
the vehicle.
The Whole
Tool is
Reversed for
the Second
Measurement

Lateral Alignment
Laser

Laser
Light Beam

C1.6 Compare the left and right distance measurements. A properly aligned radar sensor will have the same
measurement from each side. If these two dimensions are within 1/8" (3 mm), no alignment is necessary and the
technician can go to Step C1.10 to check the vertical alignment. If an adjustment is needed, follow the instructions
in C1.7-9 on page 53.

50

Appendix C

Appendix C
Bendix FLR-20™ Radar Alignment
™

C Lateral Alignment Using The Bendix® Alignment Clip And Tool (Continued)
NOTE: Complete these steps only if a lateral adjustment is necessary.
C1.7

With the Bendix alignment tool still in place, use the Torx® T-20 screwdriver to turn by hand the driver-side
stand-off adjustment screw until the desired alignment is reached.

IMPORTANT:
Do not adjust
this stand-off!! Use a Torx T-20 screwdriver here to
adjust for the lateral alignment

C1.8

Re-measure the distances from symmetrical points located at least 12" from the center line of the vehicle.
Reverse the tool for each measurement, until the values are the same [within 1/8" (3 mm)].

C1.9

After the lateral alignment procedure is complete, if there is an active misalignment DTC (codes 55, 56,
or 57), clear the Bendix® Wingman® Advanced™ system Diagnostic Trouble Code (DTC) using the procedure
in Section 4.4: Clearing Diagnostic Trouble Codes (DTCs) and reset the alignment value by connecting the
vehicle to a PC with Bendix® ACom® Diagnostic Software and follow steps B4.4-20 to reset the alignment
value. (Also, see Appendix H.)

C1.10 IMPORTANT: Before returning the vehicle to service, check the vertical alignment using the procedure
outlined below.
C1.11 [The steel clip and alignment tool should already be in place. See C1.1-2.]
C1.12 Calibrate (or “zero”) the inclinometer on a horizontal section of the frame rail. Follow the manufacturer’s
instructions (typically digital inclinometers have a “SET” button for this purpose).
Calibrate (or “zero”) the Digital Inclinometer on a
Cab Frame Rail in the direction that the vehicle
travels.
Place the calibrated digital inclinometer onto the
surface of the tool, so that the tool is in the
same direction as it was on the rail. Verify
that the display shows 0° (± 1.5°) from vertical.
NOTE: Complete these steps only if a vertical adjustment is necessary.
C1.13 With the Bendix alignment tool still in place, use the screwdriver to turn
by hand the top-left adjustment stand-off. See the Figure on the right.
During the adjustment, observe the digital display on the inclinometer
and turn the vertical alignment screw clockwise or counterclockwise
depending on the vertical direction (up or down) needed, until the
reading is near zero degrees.

Use a Torx T-20 screwdriver here to
adjust for the vertical alignment

C1.14 The radar is aligned vertically when the display is near zero (0°).
Note: The alignment process shown here is for Bendix alignment
brackets. For other brackets, similar alignment steps will be needed;
consult the vehicle manual for full instructions.

IMPORTANT:
Do not adjust
this stand-off!!

NOTE: The alignment process is complete after the vertical alignment has been checked (and adjusted, if
necessary.) You do not need to test-drive the vehicle.
Call the Bendix Tech Team at 1-800-AIR-BRAKE (1-800-247-2725), option 2 for troubleshooting assistance.
Appendix C

51

APPENDIX D - DYNAMIC RADAR ALIGNMENT
Appendix D
Bendix FLR-20 Radar Dynamic Alignment Method
™

™

This procedure may be used in rare cases where the stored alignment value is
not available. The vehicle must have a Bendix™ Driver Interface Unit (DIU™)
with a software version 12.220 or above.
D Lateral Alignment Using The Dynamic Alignment Method
Use the flowchart B1 to be sure you are using the correct alignment procedure. This procedure is used in
the rare cases where a learned alignment value is not available. For example, in cases where a technician
erroneously resets the alignment value before recording the Learned Alignment correction value and direction.
D1.1

Tools needed: DIU (with software version 12.220 or above), and a Torx® T-20 screwdriver. The assistance of
another vehicle will be necessary, and an assistant in the cab of the vehicle with the driver.
The DIU’s software version can be seen in the top right-hand corner of the Volume screen. The Bendix DIU’s
Dynamic Alignment Screen is used to show a dynamic calculation of the alignment of the radar.

D1.2

To perform the inspection, the vehicle must be traveling behind a cooperative vehicle on a straight, level length
of highway. Obeying all traffic laws, follow the vehicle in the same lane at a speed greater than 35 mph (56 kph).
For the most accurate results, the distance between the vehicles must be between 50 and 300 feet (15 to 91
meters), so the observed distance figure, displayed in the top left-hand corner of the display helps the driver
maintain the correct range. Verify that both vehicles remain in the middle of the lane during the test. The radar
determines the distance and alignment to the vehicle ahead, and, if needed, calculates an alignment correction
value, displayed on the screen.

D1.3

During the test, an assistant in the vehicle should observe where on the scale the triangle indicator shows the
alignment correction value. Because this is a dynamic measurement, the arrow will typically move through a
range of positions. Note the average position where the triangle points over a length of time. This value gives
the number of turns of the lateral adjust screw clockwise (CW) or counterclockwise (CCW), in order to correct
any misalignment present. See Figure below. The number of turns may require less than a full screw turn, e.g.
half way between 2 and 3 is 2.5 turns. The scale to the left of center shows when a clockwise (CW) adjustment
is needed, and numbers to the right are for counterclockwise (CCW) adjustments.
The indicator triangle will move
along the scale to show the
number and direction of turns to
make of the adjustment screw.

CCW = Counterclockwise

CW = Clockwise
Dynamic Alignment Screen

IMPORTANT:
Do not adjust this
stand-off!!
D1.4

Use a Torx T-20 screwdriver here to
adjust for the lateral alignment

Lateral alignment values less than 1.1 degrees from the center are acceptable and do not necessarily require
adjustment. (See the “OK” zone shown on the scale for this range).

Call the Bendix Tech Team at 1-800-AIR-BRAKE (1-800-247-2725), option 2 for troubleshooting assistance.
52

Appendix D

APPENDIX E - TROUBLESHOOTING CHECKLIST
Appendix E
Troubleshooting Checklist
Detailed Scenarios and Tests

Record Driver’s Answers for
Follow-up with Bendix

Does the vehicle maintain its set speed when cruise control is switched on and
set?

Yes

No

_____________

Is the cruise control “set” icon displayed?

Yes

No

_____________

While following a forward vehicle within radar range and the cruise control
switched on and set, observe the following:
Is the “forward vehicle detected” icon displayed?
What color is the icon?
When the forward vehicle slows down, does the truck also slow down to
maintain the set distance?
With engine cruise “off” and a forward vehicle present, does the audible alert
become faster as the truck moves closer to the forward vehicle?

Yes
No _____________
Icon Color______________
Yes

No

_____________

Yes

No

_____________

Yes
Yes
Yes
Yes
Yes

No
No
No
No
No

_____________
_____________
_____________
_____________
_____________

Yes

No

_____________

With cruise control switched on and set, when the forward vehicle slows
moderately or cuts in front of the truck and slows, did you observe any of the
following conditions?
Does the vehicle slow and Advanced maintain the following distance?
Is the engine throttle reduced?
Is the engine retarder applied?
Are foundation brakes applied?
Are there Diagnostic Trouble Codes (DTCs) logged?
Does the truck proceed toward the forward vehicle without a following
distance alert or braking intervention?

With cruise control engaged, and while following a vehicle ahead in gentle
curves (assuming a 3 to 3.5 second following distance):
Does Advanced continue to follow the vehicle through the curves following
at a constant distance?
Does the truck proceed toward the forward vehicle without a following
distance alert or braking intervention?

Yes

No

_____________

Yes

No

_____________

With cruise engaged, when your vehicle passes a slower vehicle on the left or
right on a straight or slightly curvy road:
Does Advanced ignore the vehicle you are overtaking?
Does it give a following distance alert?

Yes
Yes

No
No

_____________
_____________

Appendix E

53

Appendix E
Troubleshooting Checklist
Detailed Scenarios and Tests
With cruise engaged, and a faster vehicle passes your vehicle on the left or
right on a straight or slightly curvy road:
Does your vehicle throttle up and try to keep pace with the faster moving
vehicle?
Does it give a following distance alert?

With cruise control engaged, if the vehicle ahead slows moderately or cuts in
front of your truck and slows down:
Does your vehicle slow and Advanced maintain the following distance?
Is the engine throttle reduced?
Is the engine retarder applied?
Are the foundation brakes applied?
Are there Diagnostic Trouble Codes (DTCs) logged?
Does your truck proceed toward the forward vehicle without a following
distance alert or braking intervention?

What version of Bendix® ABS and Bendix® Wingman® Advanced™ system is
installed on the vehicle? See Section 4.21: Reading the System Software Version.

Record Driver’s Answers for
Follow-up with Bendix

Yes

No

_____________

Yes

No

_____________

Yes
Yes
Yes
Yes
Yes

No _____________
No _____________
No _____________
No _____________
No _____________

Yes

No

_____________

___________________________

___________________________
___________________________

What are the key system indicators?
See Section 5.1: System Key Indicators.

___________________________
___________________________
___________________________

Call the Bendix Tech Team at 1-800-AIR-BRAKE (1-800-247-2725), option 2
Monday through Thursday, 8:00 a.m. – 6:00 p.m., and Friday, 8:00 a.m. – 5:00 p.m. ET
for troubleshooting assistance.

54

Appendix E

APPENDIX F - DRIVER INTERFACE UNIT (DIU): DISPLAYS AND ALERTS
Appendix F
Bendix™ Driver Interface Unit (DIU™): Displays & Alerts

F1 Operator Interface
The Bendix® Wingman® Advanced™ system is either integrated into the vehicle's dash or console, or uses the
Bendix™ Driver Interface Unit (DIU™) to communicate with the driver. (For integrated systems, see the vehicle
operator’s manual for more information.)
This Section describes the functions of the DIU. The DIU mounts in, or on, the vehicle dash and provides the
interface between the driver and the Advanced system. The DIU provides visual and audio warnings to the
driver and accepts input from the driver through the “Up”, “Down” and “OK” buttons.
The DIU contains an internal speaker to provide audible warnings, 2 LED arrays (one each in yellow and red),
a single orange and blue LED and an LCD screen for visual warnings, and a light radar sensor to distinguish
between day and night conditions.

F1.1 Start-Up Mode
At initialization, the DIU executes self-test routines during which the following screens are displayed and all
LEDs are activated (power-on bulb check) for approximately three (3) seconds. If configured, a power-up tone
is also sounded.
Three Red LEDs
Illuminated

All Yellow LEDs
Illuminated

Buttons

Single Blue
LED Illuminated
Single Orange
LED Illuminated
(No LEDs
Illuminated)

(No LEDs
Illuminated)

(No LEDs
Illuminated)

W

®

Advanced

A Collision Mitigation
Technology by
Bendix

W

NOTE:
®
Advanced

Uses Foundation Brakes

NOTE:
Read Operator's Manual
before using

Call the Bendix Tech Team at 1-800-AIR-BRAKE (1-800-247-2725), option 2 for troubleshooting assistance.
Appendix F

55

Appendix F
Bendix™ Driver Interface Unit (DIU™): Displays & Alerts
When the initialization sequence is complete, the following screen is displayed for approximately three (3)
seconds to indicate the features available to the driver.

(No LEDs
Illuminated)

Bendix
Wingman ACB
Wingman Adv.

Next, the Bendix™ Driver Interface Unit (DIU™) will enter normal operation. Under normal operation, the screen
is:

(No LEDs
Illuminated)

If the Bendix® Wingman® Advanced™ system goes into self-test mode, the DIU may briefly display the “Bendix
Self-Test” screen. Also, the audible distance alerts will activate, followed by a screen indicating that the selftest has run. Below left is the screen that will be briefly displayed if the self-test runs and passes. Below right
is the screen that will be briefly displayed if the self-test runs and fails. If the self-test fails, a Diagnostic Trouble
Code (DTC) will be set. The driver should turn off the vehicle, wait 15 seconds and then turn it back on again.
If the problem persists, a qualified technician will be necessary for troubleshooting. See the “Power-Up SelfTest” in this service data sheet Section 3.1: Troubleshooting Basics for further information.

Single Yellow LED
Illuminated

Bendix

Bendix

Self Test

(Followed
by a Single
Orange
LED
Illuminated)

Self Test Failed

F1.2 Menu Operation
Pressing the “OK” button at any time will enter the “Menu Operation Mode”. The following selections will
appear in a scrollable window. Some items may not appear if the feature is not configured or not allowed as
shown below.
• Volume
• Dist. Setting (Distance Setting)
• Dist. Units (Distance Units)
• US/Metric
• Brightness
• System Status
• Diag. Display (Diagnostic Display)
• Demo (Demonstration. Note: Demo is available only when vehicle is not moving)
The desired menu item is highlighted using the up ( ) or down ( ) arrow buttons and selected with
the “OK” button. The following sections describe each menu item.
Call the Bendix Tech Team at 1-800-AIR-BRAKE (1-800-247-2725), option 2 for troubleshooting assistance.
56

Appendix F

Appendix F
Bendix™ Driver Interface Unit (DIU™): Displays & Alerts

F1.3 Volume
Selecting “Volume” from the main menu displays the following screen:

(No LEDs
Illuminated)

Use the up (
item.

)/down (

Volume

123.4

Software
Version

) arrow buttons to change the volume. Pressing the “OK” button exits this menu

The modified volume setting will be retained through ignition cycles unless configured not to do so. If not
configured, the volume setting will default to 100% on each new ignition cycle.
NOTE: The Bendix™ Driver Interface Unit (DIU™) can be configured to limit the minimum volume setting that
the driver can select. The bar shown above always represents the adjustable range based on minimum and
maximum values. For example, if the minimum value is set to 50% (midpoint between lowest (70 ± 3dB) and
highest (89 ± 3dB) audio levels, the bar represents an adjustable range from 50% (approx. 80dB) to 100%
(approx. 89dB). Once the minimum (or maximum) has been reached, a message will be shown indicating
that further adjustment is not allowed (e.g. “Minimum volume reached”). The step change per button press is
approximately 2dB.

F1.4 Dist. Setting (Distance Setting)
On systems where changes are permitted, the “Distance Setting” option from the main menu will adjust the
following distance that the Bendix® Wingman® Advanced™ system will attempt to maintain while in the following
distance mode. Distance Settings 1, 2, 3, and 4 will have different meanings based on the configuration chosen by
the user in Bendix® ACom® Diagnostic Software. Generally, 4 relates to the farthest distance setting available and
1 relates to the closest distance setting available. In many of the Advanced configurations available in ACom, two
or more distance settings may be made equivalent to one another.
For more information on user configurations available through the Bendix ACom Diagnostic Software, see Section 5.4:
Configuring Bendix Wingman Advanced System Following Distance Alerts in this Service Data sheet for further information.

Selecting “Dist. Setting” from the main menu displays the following screen:

(No LEDs
Illuminated)

Text
Here*

* Text may vary
depending on the
system installed

F1.5 Dist. Units (Distance Units) (See also F1.6 for metric units)
From the “Dist. Units” menu item, the user may choose to have the following distance from the forward vehicle
displayed in either seconds or feet. By default, this item is set to seconds. If the user selects feet, the DIU will display
the approximate distance from the bumper to the selected forward vehicle in feet. If the user selects seconds, the
DIU will display the approximate distance from the bumper to the selected forward vehicle in seconds.
NOTE: Following distance in seconds is calculated based on the current speed of the Bendix Wingman Advanced
System-equipped truck, and the distance, in feet, away from the selected forward vehicle. For instance, if the
selected forward vehicle is 88 feet (27 m) from the bumper of the Bendix Wingman Advanced System-equipped
truck, and the Bendix Wingman Advanced System-equipped truck is traveling 60 mph (97 kph), then the following
distance in seconds would be 1.0 seconds because a truck traveling 60 mph (97 kph) can travel 88 feet (27 m)
in one (1) second.
Call the Bendix Tech Team at 1-800-AIR-BRAKE (1-800-247-2725), option 2 for troubleshooting assistance.
Appendix F