which may result in little to no
system alert and/or vehicle braking
due to road curvature.

The host vehicle is traveling
on a straight road and
encounters a pedestrian
near the front of the vehicle.

The system may not recognize a
pedestrian standing close to the
front of the vehicle. The vehicle
hood creates a front blind spot (red
area) where the camera cannot
detect pedestrians. As hood length
increases, the size of this blind spot
also may increase (purple area).

The host vehicle is traveling
on a road with a highcontrast environment (e.g.,
the edge of the road, a
guardrail, or snow).

Road edges, guardrails, or other
scenarios where there is a transition
between dark and light may be
interpreted as lane lines, which
may result in a system alert and/or
vehicle braking.

The host vehicle is traveling
on a road with markings
other than lane markings
(e.g., tar lines, skid marks,
cracks on the roadway,
or severe high-contrast
shadows).

Tar lines, skid marks, cracks, or
severe or high-contrast shadows
may be interpreted as lane lines,
which may result in a system alert
and/or vehicle braking.

Illustration

IMPORTANT Illustrations are representative only and not to scale.

You, the driver, are responsible for the control and safe operation of the
vehicle. Never wait for an ADAS system to intervene.

CHALLENGING SCENARIOS (continued)
Challenging Scenario

Description

The host vehicle is
traveling on a road where
the lane markings begin
to converge, diverge, or
narrow (e.g. temporary lines
in construction areas, offramps, or merge zones).

If lane markings do not follow a
consistent pattern or lane width,
the system may trigger a system
alert and/or vehicle braking, or may
result in little to no system alert and/
or vehicle braking.

The host vehicle is
traveling where a shift
in traffic patterns (e.g.
construction zones) forces
the host vehicle to utilize the
shoulder.

The system may interpret this
situation as a roadway departure,
which may result in a system alert
and/or vehicle braking.

The host vehicle is traveling
near a parallel or frontage
road.

The system may detect speed limit
signs from a nearby road, which
may result in a system alert and/or
vehicle dethrottle.

The host vehicle is traveling
on a road with multiple
speed signs shown together
or digital speed signs.

The system may misinterpret
multiple speed limit sign values,
advisory speed limit signs, or digital
speed signs, which may result
in a system alert and/or vehicle
dethrottle.

The host vehicle is traveling
on a road with other signs
that include numbers.

The system may misinterpret signs
with numbers as speed limit signs,
which may result in a system alert
and/or vehicle dethrottle.

The host vehicle is traveling
on a road with tilted, rotated,
or partially blocked speed
signs.

The system may not detect speed
signs in these conditions, which
may result in a system alert and/or
vehicle braking, or little to no system
alert and/or vehicle dethrottle.

Illustration

IMPORTANT Illustrations are representative only and not to scale.

You, the driver, are responsible for the control and safe operation of the
vehicle. Never wait for an ADAS system to intervene.

F3.0

40

CHALLENGING SCENARIOS (continued)
Challenging Scenario

Description

The host vehicle is traveling
in unusual lighting conditions
or adverse weather
conditions like dense fog or
heavy precipitation.

HBA may or may not react
with the expected high beam
recommendation in areas with
unusual lighting or adverse weather
conditions.

The host vehicle is traveling
around tight curves,
hilltops, depressions, or
intersections.

HBA may or may not react
with the expected high beam
recommendation when traveling
around tight curves, hilltops,
depressions, or intersections.

The host vehicle is traveling
toward a solid or flashing red
or yellow traffic light.

HBA may or may not react
with the expected high beam
recommendation when traveling
toward a solid or flashing traffic
light.

The host vehicle is passing
or being passed by a long
vehicle such as a tractor/
trailer.

If the host vehicle is being passed
or being slowly overtaken by a long
vehicle, HBA may not recommend
low beams until the taillights of
the overtaking vehicle are in sight.
Similarly, while passing or slowly
overtaking a long vehicle, HBA may
recommend a high beam after the
taillights of the overtaken vehicle
are no longer in sight.

Illustration

IMPORTANT Illustrations are representative only and not to scale.

You, the driver, are responsible for the control and safe operation of the
vehicle. Never wait for an ADAS system to intervene.

41

F3.0

Systems Covered in this Overview

This document covers some – but not all – aspects of Bendix ADAS systems
with an emphasis on conditions that may limit their performance. If after
becoming familiar with the contents of this document you, the driver, still
believe the ADAS system is not performing properly, Bendix recommends the
following:
• Fully understand when the braking event occurred. Driver training may be
required to fully understand how the system operates.
• Run the most current version of Bendix® ACom® Diagnostic Software to
determine if an active fault exists with the system. Correct the fault(s) prior
to placing the vehicle back in service.
• Verify the radar is operating the latest software version. The software version
can be determined by using ACom Diagnostic Software or by contacting your
Bendix account manager. The proper radar software version is intended to
reduce sensitivity to road conditions that may cause a radar blind condition.
Refer to B2Bendix.com for related product documentation.

Bendix technologies complement safe driving practices. No commercial vehicle
technology replaces a skilled, alert driver exercising safe driving techniques and
proactive, comprehensive driver training. Never wait for the system to intervene.
Responsibility for the safe operation of the vehicle remains with the driver at all times.

F3.0

42

DIMINISHED OR LIMITED BENDIX® FUSION™
SYSTEM FUNCTIONALITY
The performance of the Bendix ® Fusion™
system may be diminished or limited when the
radar or camera becomes blocked or has not
detected a forward vehicle for an extended
period of time.

CHECK FORWARD
COLLISION SYSTEM

Figure 27 shows an example of the alert that
may be issued on the integrated display to
Figure 27 – Blocked Sensors
warn you of this condition.
When the radar is blocked, Active Cruise with Braking (ACB), Autonomous
Emergency Braking (AEB), and Following Distance Alert (FDA) will not function.
When the camera is blocked, ACB, AEB, FDA, Lane Departure Warning (LDW),
Highway Departure Braking (HDB), and Overspeed Alert and Action (OAA)
will not function.
NOTE: When a camera is initially installed, it may potentially enter a calibration
sequence where it may take up to 20 minutes of driving above 25 mph (40 kph)
on well-marked roads in clear weather for the camera to be ready and fully
calibrated. The camera should not be returned for any calibration faults found in
this time period. If a calibration fault appears while driving, system functionality
may be diminished or limited. Check the camera for looseness or misalignment
and continue driving to clear the fault. If there are active camera faults present
after 20 minutes, system performance is diminished or limited, and the vehicle
should be serviced. Refer to SD-29-50024, Bendix ® Fusion™ FLC-25™ Camera
Sensor Service Data sheet on B2Bendix.com for more information.

A

B

C

D

SPEED
LIMIT

DRIVER ASSISTANCE
ERROR – SEE ALERT
MENU FOR DETAILS

CHECK LANE
DEPARTURE SYSTEM

CHECK SPEED
SIGN RECOGNITION
SYSTEM

CHECK FORWARD
COLLISION SYSTEM

Figure 28 – Potential Camera Calibration Alerts

If the Fusion system has detected a problem, depending on the vehicle
manufacturer, there may typically be a warning message on the display, a
Diagnostic Trouble Code (DTC) may be set, and you may be alerted.
When the radar or camera becomes unblocked or is able to detect forward
vehicles again, the system should return to expected operation and the driver
notification(s) should no longer display.
43

F3.0

Speed Only Mode
In the case of blocked radar or detection
of a problem with the radar, the system will
determine – depending on the type of problem
detected – if the vehicle may continue to
DRIVER ASSISTANCE ERROR
have normal cruise control functions (without
SEE ALERT MENU
FOR DETAILS
the benefits of the Bendix® Fusion™ system),
or if all Active Cruise with Braking (ACB)
functions need to be disabled until the vehicle Figure 29 – Driver Assistance
is serviced. The system should be serviced Error
as soon as possible to restore full Fusion
functionality.
Conventional engine cruise control may be re-engaged by the driver when
the radar is disabled. Camera-based functions, such as Lane Departure
Warning (LDW) will remain. Figure 29 shows messages you may receive on
the integrated vehicle display when Speed Only Mode is active.

SYSTEM MAINTENANCE AND TROUBLESHOOTING
Preventive Maintenance
The Bendix Fusion system is relatively maintenance-free. The key items to
keep the system functioning properly include:
• Keep the area in front of the radar sensor and camera lens clean and
free of obstructions.
• Visually inspect for any damage to the bumper or the Fusion cover,
bracket, or radar to ensure the alignment has not been compromised.
Never use the radar unit as a step.
• Verify there are no active system Diagnostic Trouble Codes (DTCs).

F3.0

44

Equipment Maintenance
Importance of Antilock Braking System (ABS) Maintenance – Optimal
Bendix® Fusion™ system braking requires a properly maintained ABS
system, without any active ABS Diagnostic Trouble Codes (DTCs).
Have active DTCs repaired by a qualified technician. Any ABS DTCs
will cause the Fusion system to deactivate.
Importance of Vehicle System Maintenance – The Bendix Fusion
system will not operate and will set a DTC if any of the following
vehicle systems also show a relevant DTC: engine, engine cruise,
instrument cluster, Bendix® ABS, Bendix® Automatic Traction Control
(ATC), Bendix® Electronic Stability Program (ESP®), or transmission.
Importance of Brake Maintenance – Optimal Fusion system braking
requires properly maintained truck service brakes (drum, wide-drum,
or air disc), which meet appropriate safety standards and regulations.
Brake performance also requires the vehicle be equipped with
properly sized and inflated tires with a safe tread depth.
Radar Inspection – You should visually inspect the radar and
mounting bracket regularly and remove any mud, snow, ice buildup, or other obstructions. An alert may be issued when the radar
detects it is blocked. After clearing any obstructions, you will need
to turn the vehicle off and then on to clear the fault code. Installing
aftermarket deer, bumper, or grille guards is not recommended and
could impair the operation of the radar.
Radar Damage / Tampering – In cases where the bumper and/or radar
have sustained any damage, or if you suspect the radar has been
tampered with, do not use Active Cruise with Braking (ACB) until the
vehicle has been repaired. In addition, an indicator on the display
typically will illuminate if the system detects any of these conditions.
Consult your vehicle’s Operator’s Manual or contact Bendix for more
information.
Camera Inspection – The Bendix Fusion system camera is mounted to
the windshield of the vehicle. The camera will be mounted inside the
wiper pattern and should be clear of any obstructions. An alert may
be issued to the driver when the camera is blocked. After clearing
any obstructions, you will need to turn the vehicle off and then on
to clear the fault code.

45

F3.0

ADDITIONAL OPERATIONAL NOTES
Adjusting the Alert Volume
The Bendix Fusion system audible alerts are pre-set at the factory for fully
integrated systems and cannot be turned off.
®

™

Other Information
Federal Communications Commission (FCC) Part 15: These devices comply
with Part 15 of the FCC rules with the limits for a Class B digital device and
with RSS-210 of Industry Canada. Operation is subject to the following two
conditions: (1) these devices may not cause harmful interference; and (2)
these devices must accept any interference received, including interference
that may cause undesired operation.
Additional Information Sources for Bendix® Systems on Your Vehicle
Visit B2Bendix.com to download the Service Data sheets listed below. Consult
the vehicle manufacturer’s documentation.
•

SD-29-50022 Bendix ® Fusion™ FLR-25™ Radar Sensor

•

SD-13-4986 Bendix ® EC-80™ ESP ® Controllers

•

SD-29-50024 Bendix ® Fusion™ FLC-25™ Camera Sensor

•

(Optional) SD-61-5010 Bendix™ BlindSpotter ® Side Object Detection
System

For additional support, contact your local sales representative, visit B2Bendix.
com, or call the Bendix Tech Team at 1-800-AIR-BRAKE (1-800-247-2725).
Representatives are available to assist you Monday through Thursday, 8:00
a.m. to 6:00 p.m. and Friday, 8:00 a.m. to 5:00 p.m. ET.

F3.0

46

Acronyms and Definitions
ABS

Antilock Braking System

ACB

Active Cruise with Braking

ACC

Adaptive Cruise Control

Bendix® ACom

Bendix Diagnostic Software

AEB

Autonomous Emergency Braking

ATC

Automatic Traction Control

CMS

Collision Mitigation System

Detected Forward
Vehicle

The forward vehicle identified by the safety system that can
cause a system reaction (alert or automatic braking).

DTC

Diagnostic Trouble Code

ESP

Electronic Stability Program

FDA

Following Distance Alert

Forward Vehicle

A car/truck/other vehicle in front of the host vehicle.

HBA

High Beam Assist

HDB

Highway Departure Braking

HDW

Highway Departure Warning

IA

Impact Alert

LDW

Lane Departure Warning

LED

Light Emitting Diode

OAA

Overspeed Alert and Action

OBC

On-board Computer

PAEB

Pedestrian Autonomous Emergency Braking

SVB

Stationary Vehicle Braking

Your Vehicle/
Host Vehicle

The truck/tractor/specialty vehicle equipped with the Bendix
safety system.

Unless otherwise indicated, the trademarks used in this document, including Bendix, are United
States trademarks owned by, or licensed to, Bendix Commercial Vehicle Systems LLC.

BW8278 Rev 000 © 5/2026 Bendix Commercial Vehicle Systems LLC, a member of Knorr-Bremse • F3.0 • All Rights Reserved