OBDSTAR ECU MASTER D – Airbag, Battery and SAS Reset

The OBDSTAR ECU MASTER Configuration D is designed for automotive electronics, body repair and collision repair professionals. Operated from a Windows PC, it brings together the AIRBAG RESET, OTHER/ECM RESET, BATTERY RESET and SAS RESET applications available in OBDSTAR software. Operations vary by control unit, exact reference, software version and connection mode.

Configuration D highlights

• Airbag / SRS: diagnose and restore compatible control units after the vehicle has been repaired, including crash data clearing where supported.
• Battery: reset functions for selected compatible battery management modules.
• SAS: reset or calibrate selected steering angle sensors, depending on the application.
• Other modules: additional repair and reset applications according to the OBDSTAR coverage list.
• Upgradeable platform: ECU MASTER Configurations A, B and C can be added through separate activations.

Product description

• Common automotive protocols: CAN communication and other supported protocols depending on the module; OBD, BENCH, BOOT, JTAG or BDM reading and writing where the application provides it.
• Multiple functions on one platform: airbag/SRS, other compatible modules, battery and SAS with Configuration D activated.
• Targeted repairs: dedicated procedures for common modules to address repair and recommissioning needs after a collision.
• Simpler connections: dedicated cables are available as options for certain references to reduce jumper-wire connections; check the procedure and required cable.

Airbag and collision repair

Depending on the SRS control unit, functions may include reading ECU information, reading and clearing fault codes, EEPROM or Flash reading and writing, data backup and crash data clearing. Each operation must be confirmed against the coverage list for the exact module reference. Some references provide only a subset of these functions.

The modes OBD, BENCH, BOOT or JTAG/BDM are used according to the procedure. BENCH allows direct work on a removed control unit. Low-level access requires the connections and precautions specified by OBDSTAR.

Battery, SAS and other applications

ECU MASTER D or OBDSTAR P50?

Configuration D is designed for tasks comparable to those of the OBDSTAR P50 range for airbag, battery and SAS work. On the ECU MASTER platform, functions associated with the MP001, RH850 and CAN FD adapters are integrated as specified for this configuration; separate purchase is generally unnecessary for covered procedures. Similar functions do not mean the devices have identical coverage. Check the ECU reference and accessories in the current procedure.

How to use it

1. Install ECU MASTER software on a compatible Windows PC and activate Configuration D.
2. Find the brand, module and exact reference in the OBDSTAR coverage list.
3. Check available functions and follow the corresponding connection diagram.
4. Read and back up the original data before any work.
5. Carry out the authorised repair, then check the complete system and any remaining faults according to the vehicle manufacturer's instructions.

Specifications and updates

Software already downloaded remains usable after the update period ends; access to new features and downloads requires an active subscription. Confirm the exact hardware package or activation supplied in the Keyfirst offer.

ECU MASTER platform: STM32H723 and STM32F407 processors; 14/24 V DC operating voltage; approximate dimensions 176 × 115 × 31.7 mm; weight approximately 0.7 kg. Stated operating temperature: −10 °C to 55 °C. These specifications refer to ECU MASTER hardware; available functions depend on the activated configurations.

Frequently asked questions

Can ECU MASTER D clear crash data from every airbag module?

No. This function depends on the exact SRS control unit reference and software coverage.

Do I need to buy the MP001, RH850 and CAN FD adapters separately?

Their associated functions are advertised as integrated into ECU MASTER D. Nevertheless, check the connection method and any specific accessory required by the module procedure.

Does Configuration D also program engine ECUs and TCMs?

Applications under Configurations A, B and C require separate activations.

The brand, model and manufacturer names mentioned are registered trademarks of their respective owners. They are used solely to identify compatible applications.

Warnings and liability

For trained professionals working on vehicles they are authorised to service. Before any operation, identify the exact module, stabilise its power supply, follow the OBDSTAR wiring diagram and back up its original data. Incorrect wiring or writing can render a control unit unusable or compromise a safety function.

After a collision, inspect and replace all components required by the vehicle manufacturer's procedures, then verify the entire SRS system. Clearing crash data does not replace repair or validation of the safety system. Work on batteries and high-voltage systems requires appropriate qualifications and protective equipment.

Keyfirst cannot be held responsible for damage resulting from use contrary to the instructions, unauthorised work or handling without the necessary skills and precautions, subject to liabilities and warranties that cannot be excluded by law. This description does not guarantee support for every reference: the current OBDSTAR coverage list and the procedure for the specific module govern compatibility.

© Keyfirst 2026. Text and presentation of this product page: all rights reserved, subject to the rights of their respective owners. Unauthorised reproduction is prohibited to the extent permitted by law. Any manufacturers' trademarks, model names, images and documents mentioned or reproduced remain the property of their respective owners; references to them identify compatible applications.