NHTSA ID Number: 10203566
Manufacturer Communication Number: MERITOR
TP 1577
Summary
OnGuard system parameter update to increase the following distance alert at highway speeds
Hazard Alert Messages
Read and observe all Warning and Caution hazard alert messages in this publication. They provide information that can help prevent serious personal injury, damage to components, or both.
WARNING
To prevent serious eye injury, always wear safe eye protection when you perform vehicle maintenance or service.
Park the vehicle on a level surface. Block the wheels to prevent the vehicle from moving. Serious personal injury and damage to components can result.
How to Obtain Additional Maintenance, Service and Product Information
For more information about OnGuard™, refer to Maintenance Manual MM-1306, OnGuard™ Collision Mitigation System. If you have any questions about the material covered in this publication, or for more information about the Meritor WABCO product line, please contact the Meritor OnTrac™ Customer Call Center at 1-866-OnTrac1 (866-668-7221) or visit our website: www.meritorwabco.com.
Purpose of this Parameter Update
OnGuard™ provides a visual and audible following distance alert through the OnGuard™ display. The alert display changes to yellow and emits an audible double chirp. Currently, the OnGuard™ system has a fixed alert interval of 1.5 seconds at all speeds. This programming tool increases the alert interval to 3.0 seconds at speeds greater than 37 mph (60 kph). At speeds less than 37 mph (60 kph), the alert will remain at a 1.5-second following interval.
The alert interval is the following distance of the vehicle relative to a tracked vehicle. At lower speeds, the system will warn if the vehicle gets closer than 1.5 seconds. At above 37 mph (60 kph), the system will warn if the vehicle gets closer than a 3.0 second following interval.
Description and Function
OnGuard™ is an Adaptive Cruise Control (ACC), Collision Warning System (CWS) and Collision Mitigation System (CMS). ACC is a radar-based tracking system that works in conjunction with standard Cruise Control to maintain the set cruise speed when no vehicle is being tracked and maintains a safe following distance when a lead vehicle is being tracked. The safe following distance is maintained by controlling engine throttle, engine retarder and requesting foundation brake application as necessary. This automatic brake application is intended only to provide early braking until the driver has recognized and reacted to the situation. The driver must also apply the brakes in response to the Collision Warning.
Failsafe radar monitoring is designed to alert the driver of a blocked radar sensor. If the radar sensor is blocked, all OnGuard™ functions are disabled: ACC, Distance warnings, Forward Collision Warnings, Haptic Warnings and collision mitigation braking. The driver is informed through the OnGuard™ display.
Procedures
Freightliner tractors that have the current OnGuard™ System (SOP Jan 2013) installed require an update of the OnGuard™ Radar Software and Parameters. Freightliner tractors equipped with 2013 Detroit engines GHG 14, and have the current OnGuard™ System (SOP Jan 2013) installed require an update of the Radar Parameters.
This update requires installation of OnGuard™ Programming Tool software. This software is distributed by e-mail. Once installed, you must run the update, and then e-mail the VIN number and parameter files back to Meritor WABCO. Send the e-mail to OnTrac@Meritor.com. Write ’OnGuard Following Distance Update’ in the subject line.
SEOCONTENT-START
TP-1577
Issued 02-16
Technical Bulletin
OnGuard™ System Parameter
Update to Increase the Following
Distance Alert at Highway Speeds
IT1s PsT-ue1ec5dh7 n07ic2a-1l B6ulletin
Hazard Alert Messages
Read and observe all Warning and Caution hazard alert messages in
this publication. They provide information that can help prevent
serious personal injury, damage to components, or both.
WARNING
To prevent serious eye injury, always wear safe eye protection
when you perform vehicle maintenance or service.
Park the vehicle on a level surface. Block the wheels to
prevent the vehicle from moving. Serious personal injury and
damage to components can result.
How to Obtain Additional Maintenance,
Service and Product Information
For more information about OnGuard™, refer to Maintenance
Manual MM-1306, OnGuard™ Collision Mitigation System. If you
have any questions about the material covered in this publication, or
for more information about the Meritor WABCO product line, please
contact the Meritor OnTrac™ Customer Call Center at
1-866-OnTrac1 (866-668-7221) or visit our website:
www.meritorwabco.com.
Purpose of this Parameter Update
OnGuard™ provides a visual and audible following distance alert
through the OnGuard™ display. The alert display changes to yellow
and emits an audible double chirp. Currently, the OnGuard™
system has a fixed alert interval of 1.5 seconds at all speeds. This
programming tool increases the alert interval to 3.0 seconds at
speeds greater than 37 mph (60 kph). At speeds less than 37 mph
(60 kph), the alert will remain at a 1.5-second following interval.
The alert interval is the following distance of the vehicle relative to a
tracked vehicle. At lower speeds, the system will warn if the vehicle
gets closer than 1.5 seconds. At above 37 mph (60 kph), the
system will warn if the vehicle gets closer than a 3.0 second
following interval.
Description and Function
OnGuard™ is an Adaptive Cruise Control (ACC), Collision Warning
System (CWS) and Collision Mitigation System (CMS). ACC is a
radar-based tracking system that works in conjunction with
standard Cruise Control to maintain the set cruise speed when no
vehicle is being tracked and maintains a safe following distance
when a lead vehicle is being tracked. The safe following distance is
maintained by controlling engine throttle, engine retarder and
requesting foundation brake application as necessary. This
automatic brake application is intended only to provide early braking
until the driver has recognized and reacted to the situation. The
driver must also apply the brakes in response to the Collision
Warning.
Failsafe radar monitoring is designed to alert the driver of a blocked
radar sensor. If the radar sensor is blocked, all OnGuard™ functions
are disabled: ACC, Distance warnings, Forward Collision Warnings,
Haptic Warnings and collision mitigation braking. The driver is
informed through the OnGuard™ display.
Procedures
Freightliner tractors that have the current OnGuard™ System (SOP
Jan 2013) installed require an update of the OnGuard™ Radar
Software and Parameters. Freightliner tractors equipped with 2013
Detroit engines GHG 14, and have the current OnGuard™ System
(SOP Jan 2013) installed require an update of the Radar
Parameters.
This update requires installation of OnGuard™ Programming Tool
software. This software is distributed by e-mail. Once installed, you
must run the update, and then e-mail the VIN number and
parameter files back to Meritor WABCO. Send the e-mail to
OnTrac@Meritor.com. Write ’OnGuard Following Distance Update’ in
the subject line.
Install the Software
NOTE: An internet connection is required to obtain the OnGuard™
Programming Tool software.
SEOCONTENT-END
1 Affected Product
Equipment
1 Associated Document
Manufacturer Communications
TP-1577
Issued 02-16
MC-10203566-9999.pdf 900.757KB
- [Wide Compatibility Heavy Duty Truck Scanner] Compatible with a wide range of 12V & 24V heavy-duty trucks across North America, including major truck brands such as Freightliner, Peterbilt, Kenworth, International, Volvo, and Western Star, with support for common diesel engines from Cummins, Detroit, and PACCAR. Whether you're an owner-operator, fleet manager, or repair technician, HD601 helps simplify routine inspections, preventive maintenance, and everyday fault checks. Vehicle coverage may vary by model year, system, and configuration
- [Full-System Diagnostic Truck Scanner] This heavy duty diagnostic scanner supports full-system diagnostics for heavy-duty trucks, including Engine, Transmission, ABS, and more.It helps quickly identify faults, pinpoint problem areas, troubleshoot faster, and understand which systems need attention before repairs. Compatible light-duty vehicles support OBD2 diagnostics only
- [DTC Library + Live Data] This truck diagnostic scanner's built-in DTC library helps truck drivers, DIY users, and more quickly understand fault information. You can also manually enter standard SPN and FMI codes to look up fault details. For roadside situations without internet access, it helps identify possible problem areas
- [2-in-1 Heavy Duty & OBDII Diagnostics] This heavy duty scanner supports both HDOBD and OBDII diagnostics. It provides essential functions including Quick Scan, Full Scan, Live Data, Freeze Frame Data, Fault Code Reading and Clearing, and more. It supports HDOBD protocols such as J1939 and J1587/J1708 for reliable vehicle communication
- [Supports Multiple Vehicle Types] Suitable for various commercial vehicles, including heavy-duty trucks, semi-trucks, buses, and more. This truck scanner diagnostic tool features 6/9/16-pin connectors to support common vehicle interfaces, making it suitable for different vehicle applications and transportation needs
- Boost DPF Performance For Smooth Truck Operation: Facing power loss, weak acceleration or constant DPF warning lights? The DPF regen scan tool offers forced DPF regeneration, DPF Reset, and DPD/DPR functions to clear soot buildup, recover engine output and keep exhaust aftertreatment working properly. Detect DPF‑related errors fast, reduce downtime, and prolong your diesel particulate filter lifespan. Vehicle compatibility varies. Please verify before purchase.
- Full-System Diagnostics with Real-Time Live Data: This truck scanner diagnostic tool covers Engine, ABS, Transmission, SRS, SAS, TPMS and other core vehicle systems. Read & clear fault codes, access live data stream, freeze frame, I/M readiness, DTC lookup and additional practical functions. Leverage real‑time data to quickly locate faults and support reliable repair judgements.
- 7+ Resets ‑ Perform Essential Service Procedures: The heavy duty diagnostic tool comes with 7+ professional service resets. It supports DPF Regen for soot removal, Oil Reset to erase service reminders, Injector Coding for new injectors, DEF Test, Speed Limit Adjustment, Cylinder Cutout for weak cylinder detection, Clutch Relearn for improved clutch engagement. Run these resets after service or component replacement to keep your truck working properly. Available functions vary by vehicle model.
- One Professional heavy duty scanner for 50+ Truck Brands: Compatible with J1939, J1708, J1587, and OBD2/CAN protocols this semi truck scanner delivers wide coverage for mainstream diesel trucks and commercial vehicles. Supported brands include Cummins, Detroit, Caterpillar, Paccar, Volvo, Freightliner, Kenworth, Peterbilt, International, Mack, Isuzu, Hino, Scania, Mercedes-Benz, and more. This single diesel diagnostic scanner lets you service more vehicles and cut down tool investment costs.
- Expert Remote Diagnostic Support: Faced with unexpected truck breakdowns? Equipped with built‑in TeamViewer and tech‑to‑tech support, this diesel truck scanner enables secure real‑time remote connection with professional technicians for diagnosis and troubleshooting. Share live vehicle data and send diagnostic feedback for quicker technical analysis to get expert guidance, no on‑site service required. Minimize downtime, prevent unnecessary repairs and get your truck back on the road sooner.
- BROAD VEHICLE & ENGINE COVERAGE: Professional heavy duty truck scanner for trucks, buses, medium-duty vehicles, construction and agricultural equipment. Supports major brands including Freightliner, Kenworth, Peterbilt, Mack, International, Volvo, Hino and Isuzu, plus Cummins, Detroit, PACCAR, Caterpillar and International A26 engines. J1939/J1708 support covers newer and legacy commercial vehicles. Verify coverage before purchase
- DPF REGEN & DEF/SCR: Diagnose supported diesel aftertreatment systems with DPF regeneration, soot load, differential pressure, exhaust temperature, NOx sensor and DEF level data. Helps identify DPF blockage, excessive soot, DEF/SCR faults, warning lights and derate-related issues, providing key data for faster aftertreatment diagnosis and service
- BIDIRECTIONAL ACTIVE TESTS: Go beyond code reading with two-way component testing. Command and monitor supported injectors, EGR/VGT actuators, cooling fans, fuel pumps and relays to help verify operation. Cylinder cut-off testing helps identify misfires, cylinder contribution and injector-related issues, reducing unnecessary parts replacement
- 40+ DIESEL SERVICE FUNCTIONS: Focused on high-frequency shop tasks including oil reset, injector coding, speed limiter adjustment and idle speed adjustment. Additional service and reset functions support chassis and other routine maintenance needs. Speed and idle adjustments remain within supported manufacturer parameters
- INDUSTRIAL-GRADE DUAL-CHIP HARDWARE: Quad-core 2.0 GHz processor and automotive-grade communication MCU support smooth multitasking and reliable vehicle communication. Wireless VCI offers up to 10 m Bluetooth connectivity. An 8-inch high-brightness display supports glove-friendly use
- Diagnose Heavy-Duty Truck Problems Fast — Read and clear fault codes and diagnose warning light issues on many Class 4–8 diesel trucks including Freightliner, Peterbilt, Kenworth, Volvo, Mack and Cummins-powered vehicles
- Help Reduce Downtime & Repair Costs — It offers full system diagnostics for major trucks meeting standard protocols, along with complete OBD2 functionality. Quickly check engine faults, view live truck data and identify issues before expensive repair shop visits or unnecessary repairs
- No complicated setup required — Simple menus and built-in DTC explanations make this truck code reader easy to use for owner-operators, mobile mechanics and small fleet maintenance
- Live Data & Built-in DTC Lookup — View real-time engine data and built-in truck fault code definitions directly on the scanner to help understand vehicle problems faster without searching through manuals
- Free Lifetime Updates & Technical Support — Includes free software updates plus responsive technical support for setup, compatibility and everyday truck diagnostics
- HANDLE MORE HEAVY-DUTY JOBS WITH ONE SCANNER — The ANCEL X7HD PRO brings full-system diagnostics, HDOBD/OBD2 diagnostics, 42+ service functions, bi-directional controls, and ECU coding into one heavy-duty scan tool. Built for diesel technicians, repair shops, and fleet maintenance teams that need one scanner for everyday diagnostics, service, active tests, and post-repair work
- TAKE ON 42+ SERVICE & RESET JOBS IN-HOUSE — Perform supported DPF regeneration, injector coding, oil reset, throttle adaptation, EPB reset, ABS bleeding, idle/speed adjustment, and more. Handle more routine maintenance and service work in your own shop or fleet yard instead of relying on a dealer or separate tools for every job
- COMMAND COMPONENTS & CHECK THEIR RESPONSE — Bi-directional control lets you command supported components such as injectors, cooling fans, throttle actuators, and ABS-related systems, then check how they respond. Use active tests to narrow down a problem before tearing things apart or replacing parts, helping you troubleshoot based on actual component behavior instead of fault codes alone
- CODE & MATCH MODULES AFTER REPLACEMENT — Perform supported ECU coding, module matching, adaptations, and relearn procedures when replacing compatible components or control modules. Complete more post-repair setup with the same scanner and help ensure replacement modules are properly configured to communicate with the vehicle
- DIAGNOSE MORE SYSTEMS ACROSS A MIXED FLEET — Read and clear codes, view live data and freeze frame information, and access supported systems including Engine, Transmission, ABS, and Body. Coverage includes compatible Freightliner, Kenworth, Peterbilt, Volvo, Mack, and International trucks; Cummins, Caterpillar, Detroit, PACCAR, and Navistar engines; plus supported OBD2/HDOBD vehicles—giving multi-brand shops and fleets broader coverage from one tool
This product presentation was made with AAWP plugin.