iCarsoft HD V4.0
Professional. Comprehensive. Powerful. A Complete Diagnostic Solution for Commercial Fleets.The iCarsoft HD V4.0 is a premium 5-inch touchscreen heavy-duty diagnostic scanner built for truck mechanics, repair shops, and owner-operators. It delivers dealership-level diagnostics across all available electronic control modules, plus essential everyday maintenance functions. Equipped with lifetime free software updates, the HD V4.0 keeps your fleet running efficiently while avoiding costly breakdowns and emergency repairs.
Thirty-seven badges on board — before the first job ticket.
From American long-haul to European cab-overs and industrial iron, the coverage is already on the device the day it arrives:
When the fleet grows, the coverage grows with it.
If the pre-installed vehicle brands cannot meet the needs, the user can purchase the extension software package to get more vehicle software. Please contact us or your local agent to purchase extended software packages for the following vehicles:
Big-screen muscle for greasy-glove work.
iCarsoft HD V4.0 truck diagnostic tool features a 5-inch HD touchscreen. Powered by a 1.3 GHz MediaTek MT6580 (ARM Cortex-A7) processor running Android, it comes with 2GB memory, 32GB storage, and a 3150mAh battery, supporting up to 3 hours of continuous operation. Boasting an intuitive interface, it delivers seamless vehicle diagnosis performance.
Pay once. Upgrade forever.
Unlike other truck scan tools on the market that require annual subscription fees, the HD V4.0 offers lifetime free software upgrades. Updates are delivered wirelessly via Wi-Fi, with new diagnostic protocols and vehicle model coverage continuously released.
No subscription fees, ever
No renewals, no unlocks, no paywalls
Wireless Wi-Fi delivery
Updates arrive over the air, no cables
New protocols & model coverage
Continuously released as fleets evolve
The eight jobs that keep trucks earning.
Pick a function below to see it on the big screen — each one is a routine job the HD V4.0 turns into a two-minute task in the bay.
DPF Regeneration:
Clears particulate matter from the particulate filter to restore exhaust performance, resolving black smoke and power loss caused by carbon buildup.
Speaks your crew’s language — all of them.
Easily switch between 28 built-in languages for global operations:
Three connectors in the case, zero adapters to hunt.
The HD V4.0 comes standard with 3 specialized heavy-duty diagnostic connectors (OBD-6, OBD-9, and CAT-9). This eliminates the need to purchase separate diagnostic cables, ensuring seamless plug-and-play compatibility with non-standard OBD interfaces across major commercial trucks, buses, and Caterpillar industrial equipment right out of the box.
One port for the semi and the pickup.
The HD V4.0 truck code reader can scan the engine module through the OBD interface on both heavy-duty and 12V vehicles.
Read and clear fault codes, and turn off the malfunction indicator light (MIL).
O2 sensor test to check fuel efficiency and vehicle emission.
Display freeze frame data and retrieve vehicle information.
EVAP test for fuel tank system (Carbon canister test).
Display I/M readiness status (non-continuously monitored system test).
Request On-Board Monitoring test results for specific monitored systems.
Old guard vs. new flagship, line by line.
Upgrading from the button-operated classic? Here is the full feature-by-feature comparison.
| Feature | Button-operated classicHD V3.0 | This modelHD V4.0 |
|---|---|---|
| Coverage | All trucks with standard protocols | 37 Vehicle Makes +34 additional vehicle makes by extra charge |
| Display Size | 2.8 inches | 5 inches |
| Interaction | Physical Buttons | Physical Buttons+Touchscreen |
| System Access | Full systems | Full systems |
| Update Method | USB | Wi-Fi |
| OBD-6 Adapter | ||
| OBD-9 Adapter | ||
| CAT-9 Adapter | — | |
| Free Lifetime Updates | ||
| DPF Regeneration | — | |
| Oil Service Reset | — | |
| Injector Coding | — | |
| Clutch Matching | — | |
| Brake-pad Reset | — | |
| SCR Aftertreatment Reset | — | |
| Speed Limit Reset | — | |
| Cylinder Cut Out Test | — |
The numbers under the hood.
Nine pieces, one latch — job-ready.
Real questions from real fleets.
A: No, absolutely not. Unlike many other commercial truck scanners on the market that charge hundreds of dollars annually, the HD V4.0 comes with Lifetime Free Software Updates. You can update the software wirelessly with a single click over Wi-Fi without any hidden costs or ongoing subscription fees.
A: Yes. The HD V4.0 comes pre-installed with 37 major global truck and engine brands. If your fleet requires additional coverage, we offer 34 optional extension software packages (including brands like Bobcat, John Deere, JCB, Volvo CE, etc.). These packages can be purchased separately and activated directly on your device via Wi-Fi.
A: The HD V4.0 supports the major heavy-duty protocols, including SAE J1939, J1708, and J1850 (PWM/VPW). It also supports ISO 9141, ISO 14230-2, ISO 14230-4 KWP, ISO 15765-4 CAN, and the latest CAN-FD high-speed communication protocol.
A: They are completely included. The HD V4.0 comes standard with three essential OEM-grade non-standard diagnostic connectors: OBD-6, OBD-9, and CAT-9. This ensures immediate, out-of-the-box compatibility with older commercial fleets and specialized Caterpillar industrial machinery without requiring extra accessory purchases.
A: The HD V4.0 is the upgraded successor to the HD V3.0. It transforms the traditional button-operated scanner into a smart 5" Android touchscreen device, adding convenient one-click Wi-Fi updates and with 8 service reset functions.
Available through authorized sellers.
The iCarsoft HD V4.0 is sold through authorized iCarsoft sellers worldwide. Contact our team to confirm compatibility for your trucks, check stock, or get a volume quote for your fleet.
Interested in the HD V4.0?
This page is for product information. Tell us what you need and our team will get back to you shortly — to confirm vehicle compatibility, request a quote, or find your nearest authorized dealer.
- Coverage check for your trucks before you buy
- Volume pricing for fleets, workshops and dealerships
- Response within one business day from a real specialist
Want to become a dealer? Apply to partner →
By submitting, you agree to be contacted about this inquiry. We never share your information.