Infiniti QX4 R50 airbag control unit repair

What is an Infiniti QX4 R50 airbag control unit?

The Infiniti QX4 R50 airbag control unit is the central electronic unit responsible for monitoring and activating your vehicle's entire passive safety system. It processes signals from impact sensors and reliably controls the deployment of airbags and seatbelt pretensioners in the event of an accident. This module also stores crash data and faults for diagnostic purposes.

The module is crucial for vehicle safety and ensures that the airbags deploy correctly in an emergency. It is connected to all airbag sensors, seat belt pretensioners, and the vehicle's electrical system. An integrated diagnostic function logs crash events and system errors.

Why is the Infiniti QX4 R50 airbag control unit defective?

A defective Infiniti QX4 R50 airbag control unit often occurs after an accident, as it stores non-volatile crash data that must be erased. Internal malfunctions, voltage spikes, or age-related material fatigue can also necessitate repair. A failure compromises vehicle safety and requires immediate action.

Often, stored crash data is the primary cause of a failure, requiring a special reset. A flashing airbag warning light in the QX4 R50 also indicates a malfunction or power supply issues with the control unit. Restoring the airbag control unit with a reset service is a cost-effective and quick solution for Infiniti QX4 R50 airbag control unit repair.

Common error codes for Infiniti QX4 R50 airbag control unit repair

When repairing the Infiniti QX4 R50 airbag control unit, specific error codes are crucial for a precise diagnosis of the module. These B and U codes signal problems directly within the control unit, such as communication problems or configuration requirements after a replacement. Understanding them is essential for a successful repair.

• B1000 → Control unit communication error → Typical for internal or external communication problems of the airbag control unit.
• B1427-55 → Airbag control module has been replaced and needs to be configured → Indicates that a new module has been installed and requires programming or initialization.
• B14XX → Airbag control unit error (general, reset required) → Often occurs after an accident or when crash data is stored and requires a reset of the module.
• U1010 → Airbag control unit CAN communication error → Indicates problems with the CAN bus connection to the control unit, e.g. bad wiring or a failure.

What part numbers are available for the Infiniti QX4 R50 airbag control unit repair?

For the Infiniti QX4 R50 airbag control unit repair, specific original OEM part numbers are verified, ensuring full compatibility and safety standards. These are exclusively genuine Infiniti parts; supplier numbers from Bosch or Continental are not confirmed for this model. These precise numbers are crucial for a successful repair.

The reliably verified original OEM part numbers for the Infiniti QX4 R50 airbag control unit are K851M-5W621 and K85102W400. These numbers come directly from Infiniti or from reputable used parts databases that use original part numbers.

There are no confirmed alternative spare part or supplier numbers from Bosch, Continental, Siemens, or Autoliv for this specific model. For proper repair or replacement, you should use only these original OEM part numbers to ensure compatibility and compliance with safety standards.