Key Features
- GPS & 4G LTE
- Operates in extreme temperatures
- Multi-satellite connectivity
- Dynamic geofencing
- True idle, speed, odometer & diagnostic codes
Questions? Contact us.
Questions? Contact us.
Questions? Contact us.
Questions? Contact us.
Make strategic decisions based on deep, detailed visibility. Know each asset’s precise location, diagnostic, activity, performance and engine data readings, in near real time. And put that insight to work enhancing efficiency and optimizations across your operation.
Anything else may as well be guesswork.
ROI acrossoperational areas
higher levels offleetwide efficiency
vehicle, asset& driver utilization
safety & compliancewith accurate data
Each Zonar telematics control unit (TCU) installs directly on the vehicle, and ensures continual, near real-time connectivity using multiple systems. GPS, 4G LTE and multi-satellite connectivity deliver better positional accuracy and real-time data streaming—regardless of location, weather, terrain or obstacles such as mountains and tall buildings.
Reduce downtime and prevent major repairs by maintaining a healthier, more reliable fleet. The Zonar V4™ and Zonar LD™ capture comprehensive engine data, including Level 1 and Level 2 fault codes, which you can see at a glance on our secure, Zonar Ignition™ fleet management platform.
Identify, understand and address issues sooner. Know what’s minor and what’s critical.
Zonar telematics control units (TCUs) are tethered, meaning they install directly onto the vehicle. Each TCU streams location and telematics data in near real time—directly from the vehicle to Zonar Ignition for your immediate access.
Constant connection. Comprehensive vehicle data. One continuous stream that updates every few seconds. This is how you stay on top of your entire fleet.
OEM-grade. Designed for light-, medium- and heavy-duty vehicles, plus off-highway fleet assets.
The Zonar V4 installs to the engine control unit (ECU) and pulls a detailed, comprehensive array of diagnostic, activity, performance and engine data. Monitor location, movements and usage from Key On to Key Off. Across distances and in detail, know how each fleet vehicle and asset in your inventory is performing, in detail, at any given moment.
Use our API to extend your Zonar data into other platforms, such as for transportation management, enterprise resource planning, maintenance, and other third-party software.

Designed and reinforced for off-highway assets as well as light-, medium- and heavy-duty vehicles deployed in tough conditions. Bring on extreme temperatures, flying filth and weather that never relents.
Track with precision, even in tough conditions and demanding environments. The Zonar V4R is our reinforced version of the OEM-grade Zonar V4. Meets IP67 and IP69K ratings, and has the same reliable, long-lasting battery life as is non-ruggedized version.
Monitor location, movements and usage from Key On to Key Off. Know how each fleet vehicle and asset in your inventory is performing, in detail, at any given moment. Across distances and more-than-difficult working environment.

Designed for easy installation and more-than-fundamental tracking light-duty vehicles such as passenger cars, trucks, vans and SUVs. Plug-and-play in minutes.
Know where your light-duty fleet vehicles are and what they’re doing—at all times. Connect light-duty vehicles and start collecting telematics data with almost zero downtime. The Zonar LD TCU installs to the vehicle’s OBDII port in minutes. No special tools, cables, wire-splicing, antennas or technician experience required.
Add your core light-duty inventory to your fleet management platform and manage your entire fleet together. Expand, decommission and right-size your light-duty fleet with flexibility. Access detailed vehicle telematics data and diagnostics so you can improve performance, efficiency and security.

Prevent accidental HoS violations. The Zonar V4 pulls precise driver hours data directly from the vehicle and streams it to our ELD solution. Real-time, accurate driver hour data. Ready at the roadside at a moment’s notice.
Automatically perform remote emissions scans to comply with the California Air Resources Board’s (CARB’s) Clean Truck Check (CTC) program. Physically connected to the engine, the Zonar V4 can be set up to automatically perform required scans remotely, regardless of location. No special tools. No third parties. No downtime.
Real-world, granular insight into usage and performance is worth its weight in enhanced efficiency. In addition to precision location information, the Zonar V4 captures every power on and off event, idling, accessory use and discreet I/Os such as Power Take-off (PTO), opening and closing school bus doors, and when a snowplow is engaged and disengaged. When it occurred, at what location, and for how long.
Exclusive to the Zonar V4
The Zonar V4 passes all OEM manufacture testing. Our TCU is built to the highest standards for reliability and durability featuring best-in-class electrical, environmental and databus validation. Leading manufacturers trust the Zonar V4; so can you.
Exclusive to the Zonar V4
What is a Zonar Telematics Control Unit (TCU) and how does it benefit fleet operations?
CARB compliance refers to meeting the California Air Resources Board (CARB) regulations that govern vehicle emissions standards. These rules are designed to reduce air pollution and ensure that CARB-compliant vehicles meet strict environmental standards. For fleets operating in or traveling through California, compliance with CARB emissions standards is mandatory to avoid penalties, fines, and registration holds.
What types of vehicles and environments are Zonar TCUs compatible with?
Zonar offers three TCU models tailored to different needs.
How do Zonar TCUs help reduce vehicle downtime and maintenance costs?
Zonar TCUs capture Level 1 and Level 2 fault codes and other detailed engine data in real time, which enables fleet managers to identify and address issues early. Taking this proactive approach reduces downtime and helps avoid costly repairs, instead of a reactive approach of fixing what’s already happened.
How to Zonar TCUs stay connected and streaming what types of data?
Zonar TCUs capture dynamic geofencing, true idling, vehicle speed, odometer readings, and diagnostic code reporting. The devices use GPS, 4G LTE and multi-satellite connectivity to ensure precise and continuous data streaming, regardless of terrain, weather, or if they’re in an urban environment with tall buildings.
Can Zonar TCUs help with compliance and regulations, including the CARB Clean Truck Check program?
Yes, the Zonar V4 can automatically perform remote emissions scans to comply with the California Air Resources Board’s Clean Truck Check (CTC). The Zonar V4 also captures records and reports accurate driver hours to help fleets prevent Hours of Service (HoS) violations using Zonar Logs™.
Do top vehicle manufacturers trust Zonar TCUs?
Yes. The Zonar V4 passes all OEM testing for durability and reliability. The device integrates with platforms such as Daimler Trucks North America and International. And comes pre-installed or ready for retrofit in many Thomas Built Buses and IC Bus® vehicles.