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® Fusion™ system Diagnostic Trouble Code (DTC) using the procedure
in Section 2.6: Clearing Diagnostic Trouble Codes (DTCs) and reset the alignment value by connecting the
vehicle to a PC with Bendix® ACom® PRO™ 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 to the level surface the vehicle is parked on. Follow the manufacturer’s
instructions (typically digital inclinometers have a “SET” button for this purpose). Calibrate (or “zero”) the digital
inclinometer on the level surface the vehicle is parked on in the direction 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 during calibration. Verify that the display shows 0° (± 1.0°) from vertical. If the display does not show
0° (± 1.0°) from vertical, go on to step C1.13 to complete a vertical adjustment.

46

Appendix C

Appendix C
Bendix FLR-20™ Radar Alignment
™

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 diagram 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.
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.

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

IMPORTANT:
Do not adjust
this stand-off!!

NOTE: The alignment process is complete after the vertical alignment has been checked
(and adjusted, if necessary.) Test-driving the vehicle is not necessary.
Call the Bendix Tech Team at 1‑800‑AIR‑BRAKE (1‑800‑247-2725), option 2, for troubleshooting assistance.

Appendix C

47

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.
D1 Lateral Alignment Using The Dynamic Alignment Method
Use the flowchart B1.0 – page 37 of this document – to ensure the correct alignment procedure is used. 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

D1.2

D1.3

Tools needed: DIU (with software version 12.220 or above), and a Torx® T-20 screwdriver. The assistance of
another vehicle will be necessary, plus 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.
To perform the inspection, the vehicle must be traveling behind a cooperative vehicle on a straight, level length
of highway where the speed limit is >35 mph. 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 lefthand 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.
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. halfway 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.

CW = Clockwise

CCW = Counterclockwise

Dynamic Alignment Screen

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

D1.4

Alignment values less than 1.1 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.
48

Appendix D

APPENDIX E - DRIVER INTERFACE UNIT (DIU™): DISPLAYS AND ALERTS
Appendix E
Bendix™ Driver Interface Unit (DIU™): Displays & Alerts
E1 Operator Interface
The Bendix® Wingman® Fusion™ 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 Fusion 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, two (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.

E1.1 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
Single Blue
LED Illuminated
Single Orange
LED Illuminated

(No LEDs
Illuminated)

Buttons

Wingman®

(No LEDs
Illuminated)

A Collision Mitigation
Technology by
Bendix

(No LEDs
Illuminated)

NOTE:
Wingman®

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 E

49

Appendix E
Bendix™ Driver Interface Unit (DIU™): Displays & Alerts (continued)
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 Fusion

Next, the DIU will enter normal operation. Under normal operation, the screen is:

(No LEDs
Illuminated)

If the Bendix® Wingman® Fusion™ system goes into the 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 “PowerUp Self-Test” in this Service Data Sheet Section 1.1: Troubleshooting Basics for further information.

Bendix

Single Yellow LED
Illuminated

(Followed
by a Single
Orange
LED
Illuminated)

Self Test

Bendix

Self Test Failed

E1.2 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)
• U.S./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 (
with the “OK” button. The following sections describe each menu item.

) arrow buttons and selected

Settings should only be changed when the vehicle is stationary.
Call the Bendix Tech Team at 1‑800‑AIR‑BRAKE (1‑800‑247-2725), option 2, for troubleshooting assistance.
50

Appendix E

Appendix E
Bendix™ Driver Interface Unit (DIU™): Displays & Alerts (continued)
E1.3 Volume
Selecting “Volume” from the main menu displays the following screen:

(No LEDs
Illuminated)

Use the up (
menu item.

)/down (

Volume

123.4

Software
Version

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

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 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.

E1.4 Distance Setting (Dist. Setting)
On systems where changes are permitted, the “Dist. Setting” option from the main menu will adjust the following
distance that the Bendix® Wingman® Fusion™ 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 driver in Bendix®
ACom® PRO™ diagnostic software. Generally, 4 relates to the farthest distance setting available and 1 relates to the
closest distance setting available. In many of the Fusion system configurations available in ACom PRO software,
two or more distance settings may be made equivalent to one another.
For more information on user configurations available through the Bendix ACom PRO diagnostic software, see Section 3.4:
Configuring Bendix Wingman Fusion 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

E1.5 Distance Units (Dist. Units) (See also E1.6 for metric units)
From the “Dist. Units” menu item, the driver 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 driver selects feet, the DIU will
display the approximate distance from the bumper to the selected forward vehicle in feet. If the driver 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 Fusion 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 Wingman Fusion system-equipped truck, and the Fusion
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 E

51

Appendix E
Bendix™ Driver Interface Unit (DIU™): Displays & Alerts
E1.6 U.S./Metric
From this menu item, the driver may select whether English (U.S.) or Metric units are displayed. For instance
in “Metric” mode, the following distance is shown in meters. In “U.S.” mode, the following distance is shown
in feet.

E1.7 Brightness
Selecting Brightness from the main menu displays the following screen:
(No LEDs
Illuminated)

Brightness

The driver uses the up (
)/down (
) arrow buttons to change the LCD backlighting, LED brightness and
button backlighting. Pressing the OK button exits this menu item.
The light sensor reading determines whether the current cab lighting mode is bright (day) or dark (night).
When the light mode is bright, any brightness adjustment made by the driver is applied to only the bright
mode setting. Likewise, when the light radar sensor sets the light mode to dark, any brightness adjustment
made by the driver is applied to only the dark mode setting. This functionality allows the driver to adjust the
brightness setting for the two cab lighting conditions after which the DIU will automatically toggle between the
two settings based on the light radar sensor’s input. Both the bright mode setting and the dark mode setting
are stored across power cycles.
NOTES: The DIU does not allow the brightness control to completely shut off the LEDs.
DIU units without a light sensor will use signals from the vehicle's J1939 CAN bus to
determine and configure the day and night setting.

E1.8 System Status
This screen shows the configured features of the system and their current operational status (i.e., “Failed”
or “OK”). The failed status means that some system malfunction is preventing the feature from properly
operating and that the feature is not available for use by the driver at this time. Pressing “OK” exits this menu
item.

(No LEDs
Illuminated)

Bendix

E1.9 Diagnostics
Selecting Diagnostics from the main menu displays any active Bendix® Wingman® Fusion™ system Diagnostic
Trouble Code (DTC) conditions – including SAE standard diagnostic codes called J1939 SPNs (Suspect
Parameter Numbers) and J1939 FMIs (Failure Mode Identifiers) – that may be present in the DIU and radar
sensor. The following is a typical screen displayed in this mode when an active DTC is present:

DIU DIAGNOSTICS
(No LEDs
Illuminated)

SPN:00886 FMI:012

Note: The Forward Looking Radar
(FLR) will not report newly active
J1939 DTCs until the engine has
been running for 15 seconds. Do
not attempt to diagnose FLR J1939
DTCs without the engine running.

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

Appendix E

Appendix E
Bendix™ Driver Interface Unit (DIU™): Displays & Alerts
E2.0 Driver Demonstration Mode
Selecting Demo from the main menu starts a demonstration mode that shows the various lights, display
screens, and sounds produced by the DIU – along with a brief explanation of their meaning – for the configured
features. Pressing the down (
) arrow button advances through the screens. The up (
) arrow button
has no functionality in this mode. Demonstration mode may be exited at any time by pressing the OK button.
NOTE: This mode can only be entered while the vehicle is not moving. Also, while in the demonstration
mode, if the vehicle begins to move, the demonstration mode terminates.
If a screen is associated only with a configurable feature, and that feature is not configured, then that screen
will not be shown in the demonstration mode.
The screens presented to the driver in the demonstration mode are shown with the following text: “Error!
Reference source not found.”

E3.0 Following Distance Alerts (FDAs)
One of the features of the Bendix® Wingman® Fusion™ system is the Following Distance Alert (FDA). A
proprietary system combining vehicle speed, forward vehicle speed, distance, and driving scenario, FDAs are
used to provide the driver with distance alerts which are intelligent, in that they will give appropriate distance
alerts for the given situation. They alert the driver to objects far ahead in highway and country road driving
situations, while not over-alerting in dense city traffic. They are available when the vehicle is traveling at
speeds above 5 mph / 8 kph.
The radar sensor uses the DIU to communicate the FDAs to the driver. This system can be configured
through Bendix® ACom® PRO™ diagnostic software, for use by a fleet as a driver training tool with or without
coordinating the data made available by Bendix Wingman Fusion system. In addition to being a reminder
of when a driver may be dangerously close to the vehicle ahead, the following distance alerts may also be
configured to reinforce safe following distance habits taught by the fleet.
The FDA is based on the following interval between the host vehicle and the object ahead. In other words,
this is the time required by the host vehicle to travel forward and reach the object’s current location. With the
exception of the volume, the FDA may not be adjusted by the driver through the DIU. A qualified technician
must connect to the vehicle through the diagnostic port and run ACom PRO diagnostic software, in order to
change the configuration. The volume cannot be turned all the way down, but other adjustments may be
made by the fleet. See Section E1.3 for more details on volume adjustment.
The FDA system is intended only to alert the driver about following distance. For more information on alerts
for forward objects with high relative velocities and sudden decelerations, see Section E4.0: Impact Alert.
Only objects detected in the vehicle's lane, traveling in the same direction, are considered valid objects for the
FDA. For more information on stationary objects, see Section B5.0: Stationary Object Alert.
See Section 5.4: Configuring Bendix Wingman Fusion system Following Distance Alerts.
Call the Bendix Tech Team at 1‑800‑AIR‑BRAKE (1‑800‑247-2725), option 2, for troubleshooting assistance.

The driver is always responsible for the control and safe
operation of the vehicle at all times. The Bendix Wingman
Fusion system does not replace the need for a skilled,
alert professional driver, reacting appropriately and in a
timely manner, and using safe driving practices.
Appendix E

53

Appendix E
Bendix™ Driver Interface Unit (DIU™): Displays & Alerts
E3.1 Object Detected
When there is no valid object detected and no other high priority alert is displayed, the DIU will stand by with
the following screen:

(No LEDs
Illuminated)

When a valid object is detected, and is outside the range of the first level of alert, and no other higher priority
alert is displayed, the DIU will display the image shown below and no audio tones will be issued. The distance
to the object will be displayed in large characters in the white space at the center of the screen (not shown) in
seconds, feet, or meters, depending on the menu-selected preferences. By default, seconds will be displayed.

(No LEDs
Illuminated)

Object Detected

E3.2 Following Distance Alert (FDA) Level 3 (Slow audible two-tone alert/single LED illuminated)
When FDA Level 3 is issued, the following distance to the object/vehicle ahead has been reduced to the
distance determined in the current configuration for FDA Level 3. The DIU will begin to give the driver audio
and visual alerts for as long as the forward vehicle is in this zone and traveling at the same speed or slower.
The DIU will not display following distance units while in an FDA Level. For FDA Level 3, the audible alert will
be a single repeating tone, and the visual alert is a single yellow LED and a screen with the vehicles slightly
closer as shown below.

Single Yellow LED
Illuminated

Object Detected

E3.3 Following Distance Alert (FDA) Level 2 (Medium audible two-tone alert/two LED’s illuminated)
The DIU will give the driver audio and visual alerts for as long as the object/vehicle ahead is in this zone and
traveling at the same speed or slower. The DIU will not display following distance while in an FDA Level. For
FDA Level 2, the audible alert will be a repeating double tone, and the visual alert is two (2) yellow LEDs and
a screen with the vehicles closer as shown below.
Object Detected

Two Yellow LEDs
Illuminated

Call the Bendix Tech Team at 1‑800‑AIR‑BRAKE (1‑800‑247-2725), option 2, for troubleshooting assistance.
54

Appendix E

Appendix E
Bendix™ Driver Interface Unit (DIU™): Displays & Alerts
E3.4 Following Distance Alert (FDA) Level 1 (Fast audible two-tone alert/three yellow LEDs illuminated)

The DIU provides the driver with audio and visual alerts for as long as the vehicle ahead is in this zone and
traveling at the same speed or slower. This is the closest and most urgent Following Distance Alert.
The DIU will not display following distance while in an FDA Level. For FDA Level 1, the audible alert will be a
continuously repeating tone, and the visual alert is three (3) yellow LEDs and a screen with the vehicles close
as shown below:
Object Detected

All Yellow LEDs
Illuminated

All five states of the FDA system can be seen together below.

(No LEDs
Illuminated)

(No LEDs
Illuminated)

(No Tone)

Object Detected

(No Tone)

Object Detected

(Single Repeating
Double Tone)

Object Detected

(Repeating
Double Tone)

Object Detected

(Continuously
Repeating Tone)

FDA Level 3:
Single Yellow
LED Illuminated

FDA Level 2:
Two Yellow
LEDs Illuminated

FDA Level 1:
All Yellow LEDs
Illuminated

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

55

Appendix E
Bendix™ Driver Interface Unit (DIU™): Displays & Alerts
E4.0 Impact Alert (IA)
The “Impact Alert” uses a combination of distance to the vehicle ahead, plus high relative velocity, to decide when
to issue a loud solid tone, as well as a visual indicator to the driver. The red LED bar across the top of the DIU will
illuminate and “DRIVER INTERVENTION REQUIRED” will flash using the two screens below:
All Red LEDs Illuminated
DRIVER INTERVENTION

Screen
flashes
between
these two
displays

DRIVER INTERVENTION
REQUIRED

REQUIRED

DRIVER INTERVENTION
REQUIRED

When the IA activates, the driver must immediately act to potentially avoid, or lessen the severity of,
a collision.
The impact alert cannot be configured or turned off.
NOTE: At most, the active cruise control with braking feature of Bendix® Wingman® Fusion™ system will apply