What is an Infiniti EX37 J50 airbag control unit?
The Infiniti EX37 J50 airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures precise airbag deployment for comprehensive occupant protection.
This electronic control unit (ECU) is responsible for controlling the INFINITI Advanced Air Bag System (AABS).
It includes the activation of the front, side and roof airbags to protect the occupants of the Infiniti EX37 or QX50 J50.
The module has integrated diagnostic functions to monitor the system status and detect errors.
It also communicates with various vehicle sensors, such as crash and seat occupancy sensors.
Why is the Infiniti EX37 J50 airbag control unit defective?
An Infiniti EX37 J50 airbag control unit often fails because it stores crash data after an accident and then freezes, or because internal components are damaged by overvoltage. Firmware errors or communication failures can also lead to failure, making repair or replacement necessary.
A control unit is often defective after an accident because it irrevocably stores the collision data and then no longer allows further activation.
In such cases, repair of the module is absolutely necessary, otherwise it cannot guarantee the safety functions.
Other causes of failure include internal electronic defects or communication problems with the vehicle system.
Errors such as B1000 or U1010 indicate serious control unit problems that require professional diagnosis.
Common error codes for Infiniti EX37 J50 airbag control unit repair
Typical error codes for Infiniti EX37 J50 airbag control unit repairs include B1000 (communication), B1425 (rear collision), and U1010 (CAN communication), which directly indicate problems with the control unit itself. These often require a reset or specialized repair of the module.
- B1000 → Control unit communication error → The airbag control unit cannot communicate with other systems.
- B1425 → Rear collision detected → The module has registered a collision and must be reset.
- B1427-55 → Airbag control unit has been replaced → The module is not correctly configured for the vehicle.
- B142A → Ignition Voltage → The control module detects an abnormal power supply or voltage.
- B142X → Collision detection → The module has registered a collision and requires a reset service.
- B14XX → Airbag control module defective → A generic defect in the module that requires repair or replacement.
- U1010 → Airbag control unit CAN communication error → Communication error via the CAN bus to the airbag control unit.
What part numbers are available for the Infiniti EX37 J50 airbag control unit repair?
For Infiniti EX37 J50 airbag control unit repairs, there are currently no 100% verified OEM part numbers publicly available from official manufacturers or professional databases. A precise determination often requires a direct inquiry to the Infiniti dealer or specialized repair shop using the VIN.
Finding exact, OEM-validated part numbers for the Infiniti EX37 / QX50 J50 airbag control unit is difficult.
Available references are often incomplete or not sufficiently confirmed by official sources such as Bosch, Continental or TecDoc.
An exemplary number such as "98820-1UR0A" exists, but without official confirmation, it should be treated with caution.
For precise identification, we recommend obtaining the chassis number (VIN) from a specialist dealer or using professional databases such as TecDoc/TecAlliance.
Compatible models and features for Infiniti EX37 J50 airbag control unit repair
The Infiniti EX37 J50 airbag control unit is primarily designed for Infiniti EX37 models from 2009 onwards (J50 series), although VIN-specific coding requires careful verification before repair or replacement. It controls all aspects of the Advanced Air Bag System and is central to vehicle safety.
The control unit is factory programmed to the vehicle identification number (VIN).
This ensures correct function and vehicle assignment, which must be taken into account when replacing the module.
It continuously monitors the airbag system and processes signals from front and side impact sensors as well as seat belt pretensioners.
After an airbag deployment event or replacement, a reset or reprogramming is required to restore operation.
Installation position and special features of the Infiniti EX37 J50 airbag control unit failure
The Infiniti EX37 J50 airbag control unit is typically installed in the vehicle interior, usually under the driver's seat or in the center console. In the event of a failure, please note that replacement modules are often delivered without VIN-specific pre-programming and require reprogramming at a specialist workshop to ensure full functionality.
Positioning under the seat or in the center console ensures a direct connection to sensors and airbag modules.
It is equipped with multi-pin connectors for signal and power supply as well as interfaces to the vehicle network (CAN bus).
The module must be mounted with special brackets to protect it from shocks and moisture.
There are variations depending on the vehicle's equipment, which makes an exact fit essential when repairing or replacing the airbag control unit.
Offered control units are often not simply reset modules, but require complete recoding to the specific VIN to guarantee safe operation.