ZF WABCO OnGuardACTIVE Collision Mitigation System

Quick Facts

Manufacturer: ZF Commercial Vehicle Solutions, WABCO product family.
Product: OnGuardACTIVE.
Equipment type: Radar-based forward collision mitigation system.
Core functions: Forward collision warning, active braking, and adaptive cruise control.
Primary sensor: Forward-looking radar.
Driver warnings: Visual, audible, and supported haptic warnings.
Installation: Compatible factory installations and application-specific retrofit arrangements.
Compatibility: Verify vehicle, braking equipment, radar version, software, and approved installation requirements.

Overview

ZF WABCO OnGuardACTIVE is a radar-based driver assistance system that monitors the road ahead and supports the driver with collision warnings and active braking. It also provides adaptive cruise control in compatible installations.

OnGuardACTIVE belongs to a broader OnGuard product family. It should be identified separately from OnGuardALERT, OnGuardASSIST, and OnGuardMAX rather than assigning every family’s capability to one product.

This page describes OnGuardACTIVE at the product-family level. Vehicle-specific documentation determines the actual warning behavior, braking capability, operating thresholds, and service procedures.

Key Characteristics

Uses radar for its core forward-detection functions.
Combines collision warnings with supported braking intervention.
Provides adaptive cruise control in compatible configurations.
Supports responses to moving and stationary forward vehicles under documented conditions.
Requires compatible vehicle controls and correct setup.
Supports an attentive driver rather than replacing vehicle control.

Major Components

Identify the complete installation before ordering parts. Radar, mounting, display, harness, and supporting vehicle equipment must match the approved application.

Forward radar sensor.
Approved radar bracket and fascia or cover arrangement.
In-cab display or supported vehicle-integrated interface.
Power and communication harnesses.
Compatible braking and vehicle-control equipment.
Application-specific software and configuration.

Product Type and Construction

OnGuardACTIVE is an integrated electronic assistance system, not a standalone warning device. Its radar information supports functions carried out through compatible vehicle controls.

A radar sensor purchased separately is not a complete collision mitigation installation. Verify the required display, wiring, braking interfaces, mounting components, and software.

Sensor, Hardware, and Software Design

ZF describes OnGuardACTIVE as a radar-only forward assistance architecture. A separately installed camera does not automatically give it the radar-and-camera capabilities of another OnGuard product.

Record the radar identity, vehicle application, and software information together. Similar product names and housings do not establish interchangeable hardware or identical performance.

How the Safety System Works

The forward radar provides information about detected traffic ahead. The system evaluates that information and vehicle inputs to determine whether a supported warning or intervention condition exists.

The response can include driver warnings, engine-torque reduction, and a request for foundation braking. Adaptive cruise and collision mitigation are distinct functions with their own operating conditions.

Position and Function Within the Vehicle

The radar is mounted at the vehicle front to observe the forward area. The display communicates information in the cab, while supporting vehicle electronics connect the assistance system to approved controls.

Forward monitoring does not establish side blind-spot coverage or rear obstacle detection. Specify those functions separately when required.

Common Specifications

A useful specification identifies the actual installation. Do not apply one regional brochure’s stopping claim, following interval, or activation threshold to every OnGuardACTIVE vehicle.

Vehicle make, model, model year, and identification number.
Radar part number and hardware version.
Software and application configuration.
Compatible braking and stability equipment.
Driver interface and supported warning functions.
Documented operating thresholds and braking capability.
Electrical requirements, mounting specifications, and setup procedures.

Detection Coverage and Operating Performance

OnGuardACTIVE monitors the forward traffic situation within its supported sensing and operating conditions. Detection does not guarantee that a collision will be avoided.

Compare the installed system’s documented braking capability with the truck’s loading, brake condition, speed, and available traction. A radar range is not a guaranteed warning distance or stopping distance.

Supported Targets and Detection Zones

ZF describes OnGuardACTIVE assistance for moving and stationary forward vehicles. Recognition remains subject to the installed system’s limits.

Do not assume universal pedestrian, cyclist, animal, or crossing-traffic detection. Capabilities advertised for OnGuardMAX or another product should not be transferred to OnGuardACTIVE.

Operating Speeds and Activation Conditions

Collision mitigation and adaptive cruise have separate activation conditions. Check the correct driver documentation for speed thresholds, required inputs, and manufacturer settings.

Collision mitigation can operate without cruise being set under supported conditions. Turning cruise off should not be interpreted as disabling every warning or braking function.

Warning Functions and Alert Behavior

OnGuardACTIVE warning sequences can include visual information, audible alerts, and a short brake pulse providing a haptic warning. Learn the sequence used by the installed vehicle.

The driver should take appropriate action when a hazard develops rather than wait for a particular warning stage. No alert does not establish that the path ahead is clear.

Active Braking Functions

Active braking supports collision mitigation when the installed system identifies a qualifying threat. The available intervention must be confirmed for the specific version and application.

ZF publications describe different braking capabilities across applications. Do not promise full braking, a complete stop, or a particular deceleration without documentation for the vehicle. The driver must apply the braking required by the situation.

Stationary-Vehicle Response

OnGuardACTIVE documentation includes warnings and braking responses to supported stationary forward targets. This distinguishes it from equipment that provides stationary-object warnings only.

That capability does not establish reliable recognition of every stopped object. Review the installed system’s target and operating limitations.

Adaptive Cruise Control Functions

Adaptive cruise adjusts supported vehicle controls to manage speed relative to detected traffic ahead while cruise is set. Following settings and operating behavior must be checked for the application.

Confirm cancellation and reengagement instructions. Do not assume automatic restart, low-speed following, or stop-and-go operation from the adaptive cruise label alone.

Electrical Requirements, Wiring, and Connections

Use the electrical specifications and wiring diagrams for the installed radar and vehicle. Confirm approved power, circuit protection, grounding, and communication connections.

Inspect harness routing near the bumper, radar, and cab display. Replacement harnesses and repairs should follow the approved application rather than general accessory-wiring practices.

Vehicle Network and System Integration

OnGuardACTIVE requires compatible vehicle information and control interfaces. Diagnosis should consider relevant braking, engine, and communication faults as well as the radar itself.

Event-data connections are a separate integration question. Verify supported telematics hardware and services before describing fleet reporting or remote access as included.

Controls, Indicators, and Driver Feedback

Identify normal startup and system-status information.
Learn the display’s detected-vehicle and cruise indications.
Recognize collision warnings and supported haptic alerts.
Understand cruise controls and available following settings.
Recognize fault messages and unavailable functions.

Driver Override and System Availability

Learn how driver inputs affect each installed function. Do not assume that braking, accelerator input, or cruise cancellation changes every assistance function in the same way.

When a function becomes unavailable, follow the vehicle instructions and fleet reporting procedure. System operation should not be inferred solely from the absence of an audible alert.

System Status, Fault Indicators, and Diagnostics

Faults can affect some or all OnGuardACTIVE functions. Record messages and diagnostic information before component replacement.

Use qualified personnel and supported tools to identify the cause. After repair, complete required setup and verification rather than treating a cleared warning as proof that the installation is correct.

Materials, Environmental Protection, and Durability

Inspect radar housing, fascia, brackets, connectors, and harness protection. Environmental ratings should be checked for the actual components.

Keep the sensing area free from unapproved stickers, coatings, guards, or accessories. A protective fascia does not remove the need to check for obstruction and damage.

Duty Cycle and Operating Conditions

Review the system against actual routes, traffic, loading, and weather exposure. Radar operation in reduced visibility does not establish that road traction or stopping conditions are suitable for the selected speed.

Use the documented cruise and assistance limitations when planning driver familiarization for highway, regional, and other supported applications.

Mounting and Installation

Use the approved radar bracket, fascia arrangement, and clearances. Confirm whether bumper repairs or new accessories affect the sensing area before modifying the vehicle.

Retrofit installation requires an application-specific compatibility review. A radar and display kit should not be assumed suitable for every commercial truck.

Calibration and Configuration

Determine required alignment, software, and commissioning procedures for the exact installation. Radar replacement, bracket work, and relevant vehicle repairs may require renewed setup.

Retain configuration and service records. Verification should follow approved procedures without deliberately creating a collision threat.

Vehicle and System Compatibility

Confirm suitability through ZF, the vehicle manufacturer, or an authorized provider using the vehicle identification number and equipment records.

North American retrofit documentation specifies compatible WABCO ABS and electronic stability equipment, with application-specific software requirements. Confirm the current approved arrangement before ordering.

Related Component Compatibility

Match the radar, driver interface, harnesses, mounting hardware, and software to the supported vehicle application. Communication and powertrain variants should be verified through the parts and installation records.

A component from another OnGuard product should not be treated as an approved substitute without confirmation.

Common Applications

Approved commercial highway truck installations.
Regional freight vehicles with compatible equipment.
Existing fleets maintaining OnGuardACTIVE installations.
Eligible vehicles being evaluated for approved retrofit kits.

Advantages

Combines forward warnings and active braking assistance.
Provides adaptive cruise functionality in supported installations.
Includes supported stationary-forward-target responses.
Uses radar-based sensing for its core functions.
Offers application-specific retrofit options.

Limitations or Considerations

Capabilities vary by vehicle application and version.
Automatic braking does not guarantee collision avoidance.
Does not establish universal road-user or obstacle recognition.
Requires compatible vehicle systems and correct setup.
Obstruction, damage, and faults can affect availability.
Driver responsibility and vehicle maintenance remain essential.

Driver and Operator Experience

Provide familiarization with the actual truck’s warnings, cruise controls, and fault messages. Explain what a haptic warning feels like and how it differs from continued braking intervention.

Drivers should maintain appropriate speed and spacing and report unexpected behavior with details about the road situation and display information.

Inspection and Wear Points

Radar and fascia obstruction.
Loose, bent, or damaged mounting hardware.
Harness abrasion and connector condition.
Display condition and warning messages.
Relevant braking or communication faults.
Evidence of bumper repairs or accessory interference.

Maintenance and Ownership Notes

Include assistance-system condition and status in preventive maintenance. Keep records of parts replacement, alignment, configuration, and fault diagnosis.

For a used truck, verify the installed version and repair history before purchase. Include specialist diagnosis and commissioning in the ownership-cost review when condition is uncertain.

Common Safety System Problems

ZF service information identifies obstruction and mounting issues as areas to investigate when radar tracking is incorrect. Fault diagnosis should also consider the relevant vehicle systems.

Record the road circumstances, cruise status, warning sequence, and diagnostic information when reviewing an event. Avoid replacing the radar without identifying the cause.

Safety and Service Precautions

Follow ZF and vehicle-manufacturer procedures for electrical work, braking-system service, radar setup, and commissioning. Secure the vehicle and use qualified personnel.

Do not reposition the sensor, alter wiring, or bypass functions through unsupported methods. Complete the required verification after repair.

Identification Information

Collect the vehicle identification number, radar material number, driver-interface details, software information, and relevant braking-system identities. Match these to current parts and service documentation.

Buying Considerations

Confirm that the installation is OnGuardACTIVE.
Verify actual warning and braking capability.
Review component condition and active faults.
Check repair, alignment, and software history.
Confirm current parts and service support.
Obtain application-specific approval for a proposed retrofit.

Variants and Configurations

Vehicle-manufacturer factory installations.
Approved application-specific retrofit kits.
Radar and software versions matched to vehicle architecture.
Different driver-interface arrangements.
Region-specific applications and documented performance capabilities.

Comparison to Similar Equipment

Compare systems by target recognition, warning sequence, documented braking capability, cruise behavior, integration, and service requirements. Radar-only and combined radar-and-camera systems should be evaluated by their actual installed functions.

Best Fit For

Operators maintaining compatible OnGuardACTIVE-equipped trucks.
Fleets evaluating radar-based collision mitigation and adaptive cruise.
Eligible vehicles being reviewed for an approved retrofit.
Buyers able to support driver familiarization and specialist maintenance.

Related Vehicle and Trailer Types

Related Truck and Trailer Models

Related Safety System Types

Related Safety System Products

Related Equipment Systems

Related Guides

Regulatory and Compliance Notes

This overview does not establish compliance for a particular vehicle or jurisdiction. Confirm applicable requirements and approved specifications before modifying the installation or describing regulatory capability.

Real World Operating Notes

ZF documentation identifies curves and complex traffic situations as potential challenges for forward tracking. A system may issue an unexpected warning, brake unexpectedly, or fail to respond in some circumstances.

Review the correct limitations with drivers and retain useful event details for investigation. The driver remains responsible for observation, speed, spacing, and braking.

Frequently Asked Questions

Is OnGuardACTIVE radar-based?

Yes. ZF describes its core forward assistance architecture as radar-only.

Can it respond to stationary vehicles?

ZF documents supported stationary-forward-target warnings and braking. Check the specific installation’s limits and capability.

Does collision mitigation require cruise to be set?

Not necessarily. Collision mitigation can remain available without cruise being set under documented operating conditions.

Will every installation apply full braking?

Do not assume that. Published capability differs across applications and versions.

Can it be retrofitted to any truck?

No universal fit should be assumed. Approved kits require a compatible vehicle, braking equipment, wiring, and software.

Availability and Where to Find

Contact ZF, the vehicle dealer, or an authorized provider for current equipment support, replacement parts, and retrofit eligibility. Provide the vehicle identification number and installed component details.

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