What is a Lexus NX NX350h airbag control unit?
The Lexus NX NX350h airbag control unit is the central safety unit that activates all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures the proper functioning of all airbag modules in the vehicle. This critical component is essential to safety in the Lexus NX NX350h.
It acts as the brain of the Supplemental Restraint System (SRS), which responds to signals from acceleration sensors and crash sensors. The control unit analyzes the severity of an impact and triggers the appropriate safety measures.
After an accident, it often needs to be reset or replaced to restore full functionality of the safety system and ensure a successful Lexus NX NX350h airbag control unit repair.
Why is the Lexus NX NX350h airbag control unit defective?
A Lexus NX NX350h airbag control unit often fails because it permanently stores crash data after an accident, has internal circuit faults, or has been damaged by an overvoltage. These internal faults can impair the functionality of the entire airbag system and require repair or replacement for your safety.
The most common cause of a defect is the storage of crash data after an accident, which puts the module into a locked state. This causes the airbag warning light to remain permanently illuminated and the system to remain inactive.
Aging, material fatigue, or corrosion of internal components can also lead to failure. A faulty control unit often indicates specific error codes and an activated warning light on the dashboard.
In rare cases, software errors or incompatible programming can lead to malfunctions that require a Lexus NX NX350h airbag control unit repair.
Common error codes for Lexus NX NX350h airbag control unit repair
Typical error codes that indicate a defect in the Lexus NX NX350h airbag control unit itself include general internal malfunctions or memory errors. These codes typically require specialized diagnostics and often require a Lexus NX NX350h airbag control unit repair or module replacement.
- B1000: SRS control unit error → General internal control unit error, requires diagnosis and repair.
- B1020: SRS control unit internal malfunction → Impairment of the internal control unit functions, must be checked and repaired.
- B1810: SRS-ECU memory error → Problem with the internal memory (EEPROM) of the control unit, may cause data loss.
- B2200: SRS-ECU self-test error → Error during the control unit's internal diagnostic self-test.
- B2223: SRS-ECU self-test error → Another specific error in the module's internal self-diagnosis.
These error codes primarily indicate problems within the control unit rather than peripheral components. A professional diagnostics at a workshop is essential.
What part numbers are available for the Lexus NX NX350h airbag control unit repair?
For Lexus NX NX350h airbag control unit repair, two OEM part numbers are primarily relevant: the current 89170-F6010 and the previous version 89170-78090. Both are genuine Lexus parts and are designed for compatibility with the NX350h model.
- 89170-F6010: This is the main OEM part number for the airbag control unit in the Lexus NX350h, suitable for model years 2022-2025. It is available from official Lexus parts dealers and specialized workshops.
- 89170-78090: This part number is an older, but also genuine Lexus part number, which was replaced by 89170-F6010. However, it is still compatible and can be used in a Lexus NX NX350h airbag control unit repair.
No different OEM part numbers from external suppliers such as Bosch or Continental were found for this specific control unit. For a successful Lexus NX NX350h airbag control unit repair, using the correct part number is crucial to ensure full functionality and safety.