2026 OBDSTAR MT203 CAN Driver/Gateway Simulator Support Dash, Audio, Gear Lever, AC Panel and Other Test Functions

OBDSTAR MT203 CAN Driver/Gateway Simulator Support CAN Driver & Gateway Simulation

OBDSTAR MT203 CAN driver/Gateway simulator is a tool designed for automotive electronics maintenance and repair with 2-year free update. It provides CAN driver and gateway simulation function, supports multiple vehicles, and is a compact device, which is a good helper for automotive electronics maintenance engineers.

OBDSTAR MT203 Features:

1. Using STM32H723 high-performance MCU, fast running speed;
2. Support standard CAN, Low speed(fault-tolerant CAN), CANFD protocols: 
3. Automatic scanning, manual baud rate selection, custom input baud operation;rate and other modes to simulate different types of gateways;
4. Integrated design, comes with 120Ω resistor switch, easy to operate;
5.Simple and intuitive menu allows you to quickly master the device;
6. Mini USB upgrade cable directly connected to the PC for one-key upgrade

Applicable Maintenance Scenarios:

Automotive electronic ECU repair (Airbag, Dash, BCM and other modules simulation gateway diagnostictest by BENCH)
Automotive electronic ECU repair (Dash, Audio, Gear Lever, AC panel and other modules CAN drive test by BEHCH)
E-Car components repair (Compressor, DCDC, On-board charger and other modules simulation gateway diagnostic test by BENCH)

Supports Dash, Audio, Gear Lever, AC Panel and other test functions for below models:

for AUDI, for FORD, for PORSCHE, for BENZ, for JAGUAR, for ROLLS-ROYCE, for BMW, for LAMBORGHINI, for VOLKSWAGEN, for DODGE, for LAND ROVER, for VOLVO.

OBDSTAR MT203  Supported Protocol Types/Functions:

1. Gateway Supported Protocols

Standard CAN/Standard CAN
500K/250K 500K/125K 
Custom Baud Rate

Standard CAN/Tolerant CAN
500K/83.3K
500K/100K
500K/125K
125K/125K
Custom Baud Rate

Standard CAN/CAN FD
500K/5M
500K/2M
Custom Baud Rate

2. CAN Driver Supported Functions

Supports Dash, Audio, Gear Lever, AC Panel and other test functions for AUDI, BENZ, BMW, DODGE, FORD, JAGUAR, LAMBORGHINI, LAND ROVER, PORSCHE, ROLLS-ROYCE, VOLKSWAGEN, VOLVO and other brands.

Function Display: (From OBDSTAR APP)

Main Page:



Gear Lever Pinout:



Dash Pinout:



Radio Pinout:



OBDSTAR MT203 FAQs:

Q: Can the device be upgraded?
A: Yes, you can download the software from the official website "Service-Download-One Click Upgrade Tool", and then connect the device to the computer with USB to upgrade it.

Q: Why does the automatic scanning fail?
A: The success of the automatic scanning depends on a number of factors:

1. Make sure that the diagnostic instrument and ECU are connected correctly first, and the ECU is powered up before the automatic scanning is performed;
2. ECU power on for a period of time (a few seconds or minutes) did not communicate, may enter the hibernation mode, can not communicate, need to re-power on;
3. Part of the ECU will not take the initiative to send CAN signals, at this time you need to manually set the device;
4. CANFD currently doesn't support automatic scanning, please set it manually.

Q: Where to check the wiring diagram of CAN driver?

A: You can download the OBDSTAR APP from the Apple Store and Google Play Store. There are wiring diagrams for Dash, Audio, Gear Lever, etc. in the APP.

Q: What does the 120Ω resistor do?
A: If the ECU itself does not come with a 120Ω resistor, you need to switch the unit's resistor switch to ON for the CAN line to communicate properly.

Q: Is the Flexray protocol supported?
A: It is not supported.

Package includes:

1pc x OBDSTAR MT203 main unit
1pc x Mini USB upgrade cable