What is an Infiniti Red Sport Q50 airbag control unit?
The Infiniti Red Sport Q50 airbag control unit is the heart of the occupant protection system and continuously monitors all airbags and seatbelt pretensioners. It processes sensor data, stores important crash information, and is crucial for reliably deploying the safety systems in the event of a collision to provide optimal occupant protection.
This central electronic module, also known as the SRS Control Module or Safety Diagnostic Module (SDM), evaluates signals from crash and seat occupancy sensors. If necessary, it precisely controls the activation of the airbags and seatbelt pretensioners to minimize injuries.
Proper function of the control unit is essential, as it coordinates the vehicle's entire safety architecture. It also communicates with other vehicle systems via the CAN bus, enabling precise diagnostics and tuning.
Why is the Infiniti Red Sport Q50 airbag control unit defective?
An Infiniti Red Sport Q50 airbag control unit often fails because it stores crash data after an accident, requiring reprogramming, or because internal components fail due to overvoltage or aging. Water or corrosion damage are also common causes that make repair or replacement of the module unavoidable, necessitating airbag control unit repair.
The most common cause of a defect is the storage of crash data after an accident, which results in the deactivation of the system. This requires either a reset or replacement of the module to restore functionality.
Internal errors such as faulty EEPROM memory, communication problems, or power supply issues can also lead to failure. Such failures are often signaled by specific error codes that indicate a problem within the control unit itself.
Less obvious causes include internal hardware or software errors caused by aging or voltage spikes. A defective control unit can impair the functionality of the entire airbag system and is a reason to have the airbag control unit repaired.
Common error codes for Infiniti Red Sport Q50 airbag control unit repair
When diagnosing a faulty Infiniti Red Sport Q50 airbag control module, specific OBD-II B codes will occur that directly indicate internal errors of the SRS Control Module, such as communication problems, memory errors, or power supply issues, which will identify the exact cause of the necessary airbag control module repair.
- B1000: Internal Control Unit Communication Fault – Indicates an error in the internal communication of the airbag ECU.
- B1001: Monitoring Circuit Error – Indicates a malfunction in the control unit’s internal monitoring circuit.
- B1002: Internal Memory Error – Indicates a problem with the airbag control unit’s internal memory, often after a crash.
- B1003: Invalid Software Version – Indicates an incompatible or corrupted software version in the module.
- B1004: Power supply fault – Indicates problems with the power supply to the airbag control unit, for example due to faulty wiring.
- B1005: EEPROM Error – Reports an error in the control unit’s EEPROM memory, where crash data is stored.
- B1010: Self-test failed – Indicates that the airbag module’s internal self-test failed.
- B1015: Airbag Control Module Memory Error – A generic message for various memory problems in the SRS module.
- B1020: Faulty CAN bus communication – Indicates problems with the control unit communicating with other systems via the CAN bus.
- B1025: Watchdog Timeout – Indicates an error in the ECU’s internal monitoring system.
- B1030: Calibration Error – Indicates an incorrect calibration of the airbag control module, which may be required after a replacement.
These specific B-codes aid in the targeted diagnosis and repair of the airbag control unit, as they point directly to problems within the SRS control module, not to sensors or airbag modules. These codes are crucial for Infiniti Red Sport Q50 airbag control unit repair.
What part numbers are available for the Infiniti Red Sport Q50 airbag control unit repair?
Two primary OEM part numbers are relevant for the Infiniti Red Sport Q50 airbag control module repair: 988206HE0A and K8820-4HL0A, both of which refer to the central SRS control module. These numbers are crucial for identifying the correct control module for your vehicle and ensuring a successful replacement or repair.
The 988206HE0A is a genuine Infiniti OEM part number specifically verified for the airbag control module (SRS) for 2017-2018 Infiniti Q50 models, including the Red Sport variants. This ensures compatibility for a targeted airbag control module repair.
Another verified OEM part number is K8820-4HL0A , which is listed as SDM Module (Safety Diagnostic Module) and also refers to the airbag control unit for Infiniti Q50 models from 2016 to 2019. Both numbers are crucial for identifying the correct replacement part.
It's important to note that part number K8510-5CJ0A is not a control unit, but a driver airbag module, and is often mistakenly considered a replacement control unit. When repairing the Infiniti Red Sport Q50 airbag control unit, always pay attention to the exact name of the required part.
Since the control unit must be programmed to a specific VIN, it is always recommended that it be adjusted by a specialist workshop after a replacement. Prior verification via the vehicle identification number (VIN) is advisable to ensure the full functionality of the airbag system.