What is a Lexus RX AL30 airbag control unit?
The Lexus RX AL30 airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It monitors sensors, stores crash data, and ensures the proper functioning of all airbag modules in the vehicle to provide maximum protection.
This critical module, also known as the SRS-ECU (Supplemental Restraint System Electronic Control Unit), processes signals from crash sensors and precisely deploys the airbags and seatbelt pretensioners. It is therefore essential for the safety of the driver and passengers.
Why is the Lexus RX AL30 airbag control unit defective?
The Lexus RX AL30 airbag control unit often fails after an accident because it permanently stores crash data, which requires reinitialization or repair. It can also fail due to internal circuit faults, communication problems in the CAN bus, or age-related corrosion.
A common cause of a defect or malfunction is the storage of crash data after a collision. This data prevents the module from being reused until a professional reset is performed, necessitating an airbag control unit repair.
Internal circuit faults or problems communicating with other vehicle systems can also lead to failure. Such failures often manifest themselves as an illuminated airbag warning light or specific error codes. A comprehensive diagnosis is crucial in this case.
Error codes like B1000 indicate communication problems, while B1861 or B1866 signal open circuits. A professional diagnostic at the workshop is crucial. This determines the exact cause and enables an effective Lexus RX AL30 airbag control unit repair.
Common error codes for Lexus RX AL30 airbag control unit repair
During Lexus RX AL30 airbag control unit repair, specific error codes occur that directly affect the airbag ECU. These codes indicate internal module problems, communication failures, or malfunctions in the monitored airbag circuits that require repair after an accident or failure.
- B1000 → Control unit communication error → Communication between airbag ECU and other modules is disturbed.
- B1861 → Open short circuit driver's knee airbag → Problem in the driver's knee airbag circuit, often caused by a wiring defect or ECU error.
- B1866 → Passenger side knee airbag open short → Problem in the passenger side knee airbag circuit, requires troubleshooting.
- B1941 → Airbag control unit error (light bypass) → Internal error in the airbag control unit that triggers the airbag light.
What part numbers are available for the Lexus RX AL30 airbag control unit repair?
For Lexus RX AL30 airbag control unit repairs, specific Lexus OEM part numbers are relevant to ensure compatibility with your vehicle model. It is crucial that these numbers match the defective module to ensure a smooth restoration of the airbag systems.
These original manufacturer (OEM) part numbers are verified for various model years and VIN blocks of the Lexus RX AL30.
- 89170-0E031 / 891700E031 – Genuine Lexus OEM part number, compatible with Lexus RX AL30 models.
- 89170-0E430 / 891700E430 – Another verified OEM part number for Lexus RX AL30 airbag control units.
- 89170-30F00 / 8917030F00 – Specific OEM number for Lexus RX 450h models within the AL30 series.