Diagnostic Equipment for Heavy-Duty Trucks and Commercial New Energy Vehicles

1. Product Overview

The HUMZOR M400 is a professional diagnostic platform designed for heavy-duty trucks and commercial new energy vehicles (NEVs). It combines comprehensive brand coverage, 21 commonly used special functions, fast wireless connectivity and an industrial-grade tablet to deliver a complete workshop solution.

Key Highlights

A comprehensive diagnostic platform covering all brands, all systems and all functions

Supports 19 special features (21 functions in the full version)

Covers over 270 vehicle models across trucks, buses, construction, agriculture and NEVs

Supports 12–24 V vehicles with one-touch quick scan

Industrial-grade tablet with reliable Wi-Fi connectivity

Easy to use, reliable performance, comprehensive features

2. Why Choose the M400?

Supports common special features, including post-processing, calibration, speed limit programming and one-click intelligent quick scan.

Core Capabilities

Supports diesel, natural gas and new energy vehicles

Supports the standard truck OBD2 protocol (J1939 and J1708)

Automatic vehicle type recognition via VIN

Supports 12V and 24V light-duty and heavy-duty trucks

One-click code reading, code clearing and quick scanning

Supports post-processing (DPF) and speed tuning features

3. 21 Special Functions

A variety of commonly used special functions, such as reset and configuration, assist with vehicle maintenance.

Function List

Odometer Adjustment

Idle Speed Adjustment

Broken Cylinder Test

Clear Spec DTC

SAS

SUSPENSION

IMMO KEY

DCDC TEST

OBC TEST

HVPO

PRV Valve Test

Tire Change

Speed Limit

INJECTOR (HD)

DPF (HD)

VIN Modification

Oil Reset

Clutch Matching

TPMS

ECU Reset

Gear Learn

4. Wide Vehicle Coverage

Supports testing of trucks, buses, pickup trucks, construction machinery, new energy commercial vehicles and agricultural machinery.

270+ Brands & Models

With a wide range of vehicle models and comprehensive coverage, the M400 can test both diesel vehicles and commercial new energy vehicles.

Coverage Structure

Diesel Coverage: Trucks, Buses, Pickup Trucks, Construction Equipment, Agricultural Machinery, Engines, Electronic Control Systems, OBD II, China VI Special Inspection

New Energy Coverage: China (BYD, Denza, SAIC Maxus, FAW Commercial Vehicle, BAIC NEV and more), Asia (Toyota series), OBD II New Energy

Key brands: Mercedes-Benz (HD), Scania, Volvo, Isuzu (HD), MAN, Caterpillar, Komatsu, John Deere, Cummins, Weichai, Perkins, Bosch and more

5. New Energy Testing

New energy vehicle testing covers more than 80 commercial vehicle brands.

Three Core Modules

Automotive Diagnostics — full system scanning for NEVs

Battery Pack Diagnostics — battery health and cell-level analysis

Special Features — NEV-specific resets, HVPO (high voltage power-off), DCDC / OBC testing

6. Wireless & Multi-Device Connectivity

Long-Range Wi-Fi Diagnosis

Equipped with a new 2.4G Wi-Fi module, the M400 offers an effective transmission range of up to 100 meters. Perform remote diagnostics from the comfort of your workshop without ever having to leave the premises.

PC & Mobile Device Support

Supports seamless connectivity and switching between three major devices: smartphones, tablets and PCs.

Gasoline Diagnostics, Diesel Diagnostics, New Energy, ECU Programming, Special Features, Key Programming

PC version with full dashboard: DTC query, software management, remote assistance

Mobile version with quick functions: odometer adjustment, VIN modification, DPF (HD), TPMS (HD), SAS (HD), DCDC TEST (EV) and more

7. Technical Specifications

8. Package Contents & Color Options

Package Includes

HUMZOR M400 tablet

VCI (Vehicle Communication Interface)

Carrying case

Password sheet (S/N + activation code)

Data cable (Type-C to USB-A)

Instruction manual

Color Options

Choose between two professional colors: Black or Green.

9. About Us & Contact

Shenzhen Talentcar Electronic Co., Ltd. is a 14+ year Gold Supplier on Alibaba.com, specializing in automotive diagnostic tools and key programming equipment. OEM / ODM and wholesale orders are welcome.