57

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

F1.6 US/Metric
From this menu item, the user may select whether English or Metric units are displayed. For instance in
“metric” mode, the following distance is shown in meters. In “US” mode, the following distance is shown in feet.

F1.7 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 Bendix™ Driver Interface Unit (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.
NOTE: 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

F1.8 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.

Bendix
Wingman ACB OK
Wingman Adv. OK

(No LEDs
Illuminated)

F1.9 Diagnostics
Selecting Diagnostics from the main menu displays any active Bendix® Wingman® Advanced™ 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
SPN:00886 FMI:012

(No LEDs
Illuminated)

Call the Bendix Tech Team at 1-800-AIR-BRAKE (1-800-247-2725), option 2 for troubleshooting assistance.
58

Appendix F

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

F2.0 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 Bendix™ Driver Interface Unit (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. The 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.”

F3.0 Following Distance Alerts (FDAs)
One of the features of the Bendix® Wingman® Advanced™ 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.
The radar sensor uses the DIU to communicate the FDA alerts to the driver. This system can be configured
through a current version of Bendix® ACom® Diagnostic Software, for use by a fleet as a driver training tool
with or without coordinating the data made available by the Bendix Wingman Advanced 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 Bendix ACom Diagnostic Software, in order
to change the configuration. The volume can not be turned all the way down, but other adjustments may be
made by the fleet. See Section B1.3 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 B4.0: 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 Advanced 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® Advanced™ 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 F

59

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

F3.1 Object Detected
When there is no valid object detected and no other high priority alert is displayed, the Bendix™ Driver Interface
Unit (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 following 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

F3.2 Following Distance Alert (FDA) Level I (Slow audible two-tone alert/single LED illuminated)
When FDA Level I is issued, the following distance to the object/vehicle ahead has been reduced to the
distance determined in the current configuration for FDA Level I. 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 I, 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.

Object Detected

Single Yellow LED
Illuminated

F3.3 Following Distance Alert (FDA) Level II (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 II, the audible alert will be a repeating double tone, and the visual alert is two 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.
60

Appendix F

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

F3.4 Following Distance Alert (FDA) Level III (Fast audible two-tone alert/three yellow LEDs illuminated)
The Bendix™ Driver Interface Unit (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 III, the audible alert will be
a continuously repeating tone, and the visual alert is three yellow LEDs and a screen with the vehicles close
as shown below:

All Yellow LEDs
Illuminated

Object Detected

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

FDA Level I:
Single Yellow
LED Illuminated

Object Detected

FDA Level II:
Two Yellow
LEDs Illuminated

FDA Level III :
All Yellow LEDs
Illuminated

Object Detected

(Single
Repeating
Double Tone)

(Repeating
Double Tone)

(Continuously
Repeating
Tone)

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

61

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

F4.0 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
Bendix™ Driver Interface Unit (DIU™) will illuminate and “Wingman Adv. Requires DRIVER INTERVENTION”
will flash using the two screens below:
All Red LEDs Illuminated
ACB REQUIRES

Screen
flashes
between
these two
displays

ACB REQUIRES
DRIVER INTERVENTION

DRIVER INTERVENTION

ACB REQUIRES
DRIVER INTERVENTION

When the Impact Alert activates, the driver must immediately act to potentially avoid, or lessen the severity
of, a collision.
The impact alert can not be configured or turned off.
NOTE: At most, the adaptive cruise control with braking feature of Bendix® Wingman® Advanced™ system
will apply up to one-third of the vehicle’s braking capacity. The driver must apply additional braking, when
necessary, in order to maintain a safe distance from the vehicle ahead.

F4.1 Collision Mitigation
If a collision is likely to occur, and the collision mitigation feature activates the foundation brakes, the tone
of the alert will typically change and the display will be as shown below. The driver must immediately act to
potentially avoid, or lessen the severity of, a collision.
All Red LEDs Illuminated
WINGMAN Adv.

Screen
flashes
between
these two
displays

WINGMAN Adv.

BRAKING

BRAKING
WINGMAN Adv.

BRAKING

NOTE: At most, the collision mitigation feature of Bendix® Wingman® Advanced™ system will apply up to twothirds of the vehicle’s braking capacity.

F5.0 Stationary Object Alert (SOA)
Stationary Object Alert (SOA) is an alert given to the driver when the radar detects a sizeable, nonmoving
metallic object in the vehicle's path of travel. To reduce the number of false detections, such as bridges and
overhead signs, an advanced set of filters are put in place so the SOA will not warn on every stationary object.
The SOA can be configured to be on or off through the display.
If a SOA is issued, the DIU will very briefly send out an alert identical to a very brief FDA Level II: continuous
tone and two yellow LEDs, with the display image switching between the two shown below.
“Object”
icon
flashes
between
these two
symbols

Two Yellow
LEDs
Illuminated

Call the Bendix Tech Team at 1-800-AIR-BRAKE (1-800-247-2725), option 2 for troubleshooting assistance.
62

Appendix F

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

F6.0 ACB (Adaptive Cruise Control with Braking) Icon
The ACB icon appears in the upper left-hand corner of the Bendix™ Driver Interface Unit (DIU™) screen to
indicate to the driver that the adaptive cruise control with braking feature of the Bendix® Wingman® Advanced™
system is ready and able to intervene.
Once the driver sets cruise, the DIU will display the set speed and the ACB icon as shown below.
(No LEDs
Illuminated)

ACB
Set
Speed

55

mph

When a forward vehicle is detected and either the distance to the vehicle or a following distance alert is
shown, the ACB icon should remain on the screen if the adaptive cruise control feature of Bendix Wingman
Advanced System is still engaged and ready to intervene.

ACB Object Detected

Two Yellow LEDs
Illuminated

NOTE: If the ACB icon is not displayed on the screen, the driver must assume that the adaptive cruise control with
braking feature of the Bendix Wingman Advanced System is not ready, or able, to intervene!
Call the Bendix Tech Team at 1-800-AIR-BRAKE (1-800-247-2725), option 2 for troubleshooting assistance.

Appendix F

63

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

F7.0 Brake Overuse Alert
Using cruise control on downhill runs is the primary cause for this alert to be activated.

Approach grades as you would normally, with the appropriate gear selected and at a safe speed. Cruise
control should NOT be used on downhill grades.
To guard against foundation brake overuse by the adaptive cruise control with braking feature of the Bendix® Wingman®
Advanced™ system, the frequency of foundation brake interventions is monitored. If the system detects a situation where
the brakes are being applied too frequently by the system in a given time period, the brake overuse alert will activate.
This is designed to help prevent overheating of the brakes, which may lead to brake fade and reduced vehicle braking
capability. In this situation, the Brake Overuse Alert (BOA) will flash a message requesting driver intervention. Also, an
audible alert will sound and a blue LED will blink on the Bendix Driver Interface Unit (DIU™), as illustrated below:
ACB REQUIRES

Blue
LED
Blinks

Screen
flashes
between
these two
displays

ACB REQUIRES
DRIVER INTERVENTION

DRIVER INTERVENTION

ACB REQUIRES
DRIVER INTERVENTION

This alert will continue for 15 seconds, during which time the driver should step on the brake or turn off cruise
control using the cruise control on/off switch.
•
•

If the system
detects that
the driver has
intervened
within 15
seconds after a
brake overuse
alert

•
•
•

(Typically by
applying the
brakes, or
cancelling cruise
control)

The intervention cancels cruise control.
After a Brake Overuse Alert, for a period of time (typically 20 minutes), the Bendix Wingman
Advanced System will not use the foundation brakes when intervening. The system
will be limited to de-throttling the engine and applying the engine retarder. Note: In all
cases, the driver still has the ability to apply the foundation brakes if necessary. The
driver should take care since overheated brakes may reduce the vehicle’s braking
capability.
The time period for this mode is measured from the time the Brake Overuse Alert was
activated and lasts approximately 20 minutes.
Note: The driver will continue to receive all three alerts Following Distance Alert (FDA), Impact
Alerts (IA), and Stationary Object Alerts (SOA).
Additionally, the DIU message will change to “ACB Braking Overuse” and the blue LED will
remain lit, as shown below:

Bendix

Blue LED
Stays On

If the system
does not detect
an intervention
by the driver
within 15
seconds after a
brake overuse
alert

•
•
•
•

_____________________
ACB BRAKING OVERUSE
Press OK for Menu

At the end of the
“cooling-off” period, the
“ACB Braking Overuse”
message and the blue
LED will turn off.

The system will shut itself off, and set a Diagnostic Trouble Code (DTC).
All intervention features of the Bendix Wingman Advanced System will be disabled
until the next ignition cycle.
Note: The driver will continue to receive all three alerts (FDA, Impact, and Stationary Object).
Note: In all cases, the driver still has the ability to apply the foundation brakes if
necessary. The driver should take care since overheated brakes may reduce the
vehicle’s braking capability.

Call the Bendix Tech Team at 1-800-AIR-BRAKE (1-800-247-2725), option 2 for troubleshooting assistance.
64

Appendix F

APPENDIX G - HOW TO GENERATE, READ, AND RESET THE BENDIX® WINGMAN® SYSTEM
DIAGNOSTIC TROUBLE CODES (DTC ) USING BENDIX® ACOM® DIAGNOSTIC SOFTWARE

Appendix G
G1: How to Generate a DTC Report with Bendix ACom Diagnostic Software
1. Connect a current version of the Bendix® ACom®
Diagnostic Software with the vehicle.

2. Once the roll call is complete, you can select the DTC Report
icon on the top menu.

3. The DTC report drop-down gives you the following
options:

4. Select “Print Preview” to generate and save the report.

•

Print DTC Report

•

Print Preview of the DTC Report

•

Submit DTC Report

For assistance with the ACom Diagnostic Software, contact the Tech Team at 1-800-AIR-BRAKE
(1-800-247-2725), option 2.

Appendix G

65

Appendix G
G2: How to Read the Bendix Wingman Advanced™ System Diagnostic Trouble Code (DTC)
Reports with Bendix® ACom® Diagnostic Software
®

1. Connect a current version of the Bendix® ACom®
Diagnostic Software with the vehicle.

®

2. Once the roll call is complete, you can view active and inactive
DTCs and clear DTCs from all vehicle components or only from
a selected Bendix controller.

3. To read and clear DTCs from all vehicle components at
4. To read and clear DTCs from a specific Bendix Electronic
the same time, select the vehicle on the roll call and click
Control Unit (ECU),, select the Bendix ECU on the roll call and
‘“Clear Faults.”
click “Clear Faults.”

For assistance with the ACom Diagnostic Software, contact the Tech Team at 1-800-AIR-BRAKE
(1-800-247-2725), option 2.

66

Appendix G

APPENDIX H - HOW TO READ KEY SYSTEM INDICATORS
AND RESET ALIGNMENT VALUES
Appendix H
How to Read Key System Indicators and Reset Alignment Values
Read System Key Indicators (Configuration)
1. Connect to a current version of the Bendix® ACom® Diagnostic Software and select “Bi-Directional” from the main menu.
2. Select the FLR20 controller from the menu.
3. Select the “Wingman FLR Configuration” from the available tests, which will display all the FLR20 configuration parameters.

System Key Indicators
Attribute

Description

See Section:

ACC Lateral
Mounting Offset

This value should equal 0 if the radar sensor is mounted on the center line of the
vehicle. If the service technician believes the radar sensor should be mounted offset
from center, call 1-800-AIR-BRAKE (1-800-247-2725), option 2.

Stationary Object This is a status indicator for the function of stationary object warning. Available for use
Warning Indicator in Bendix® Wingman® Advanced™ system versions since 2010.
Following
Distance Alert
(FDA)Table

This indicates the distance setting and FDA that are configured for the vehicle. Refer
to Table 7 for setting information.

Appendix A
1.8
Appendix J

How To Reset The “Alignment Value”
1. In the “Bi-Directional” menu, select the FLR20 controller.
2. Select the “Reset Lateral Alignment Value” from the available tests.
3. Follow the instructions on the window and click “Reset.”
4. Cycle the vehicle ignition power to complete the process.

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

Appendix H

67

APPENDIX J - HOW TO CHANGE THE FOLLOWING DISTANCE ALERT
(FDA) SETTINGS AND ENABLE MOMENTARY BEEPING
Appendix J
How to Change the Following Distance Alert (FDA) Settings and Enable Momentary Beeping
Read Key System Indicators (Configuration)
1. Connect a current version of Bendix® ACom® Diagnostic Software and select “Bi-Directional” from the main menu.
2. Select the FLR20 controller from the menu.
3. Select the “Wingman FLR Configuration” from the available tests, which will display all the FLR20 configuration parameters.
4. To update the FDA settings, enter the desired value in “Update Value” and select “Write Values.”
5. Turn the “Momentary FDA” on or off as needed and select “Write Values.”

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

68

Appendix J

69

1-800-AIR-BRAKE (1-800-247-2725)
[email protected]

Trademark acknowledgements:
The ACOM, AD-IS, BENDIX, EC-60, ESP, and WINGMAN trademarks are licensed to or owned by Bendix
Commercial Vehicle Systems LLC.
Any references in this manual to MICROSOFT and any other company or trademark are solely for
identification and cross reference purposes. The trademarks are the property of their respective companies
and are not affiliated with or endorsing Bendix Commercial Vehicle Systems LLC. Bendix Commercial
Vehicle Systems LLC does not represent any parts shown as products manufactured or remanufactured
by the companies so named herein.
SD-61-4960 Rev 008 © 11/2024 Bendix Commercial Vehicle Systems LLC, a member of Knorr-Bremse • All Rights Reserved

70