What is a Lexus ES ES350 airbag control unit?
The Lexus ES ES350 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 the proper functioning of all airbag modules and seatbelt pretensioners in the vehicle for maximum occupant safety.
This sophisticated electronic module is critical to your Lexus ES350's Supplemental Restraint System (SRS). It receives signals from crash sensors and deploys the appropriate airbags in an emergency.
Why is the Lexus ES ES350 airbag control unit defective?
The Lexus ES ES350 airbag control unit can fail because it stores crash data after an accident, preventing it from restarting, or due to internal electronic faults such as overvoltage damage and component aging. Water damage or age-related wear of the internal circuitry can also cause failure.
Because a Lexus ES ES350 airbag control unit irreversibly stores crash data after a collision, it often needs to be repaired or replaced to restore full functionality of the safety system.
Other common causes of failure include internal hardware defects, which manifest themselves as communication errors or the SRS warning light remaining permanently lit. Such damage can be caused by aging components or external influences that damage the module.
Common error codes for Lexus ES ES350 airbag control unit repair
During Lexus ES ES350 airbag control unit repairs, specific error codes such as B1000 and B1861 often occur, which directly indicate problems with the airbag control unit itself or its circuitry. These codes indicate communication errors or interruptions in the airbag system and require a precise diagnosis to resolve the issue.
- B1000 → Control unit communication error → Cause: Problem with the data connection or internal hardware of the airbag control unit.
- B1861 → Open circuit in the driver knee airbag pulse circuit → Cause: Problems with the wiring or connectors in the airbag control module for the knee airbag harness.
What part numbers are available for the Lexus ES ES350 airbag control unit repair?
For Lexus ES ES350 airbag control unit repairs, only genuine Lexus OEM part numbers from the 89170-xxxxx series are relevant and 100% verified. These specific numbers ensure correct fit and function for your vehicle and are crucial for a successful airbag system repair.
Validated original OEM part numbers include 89170-06880, 89170-33571 (or alternative 89170-33570), 89170-33860 (with alternative 89170-33660), 89170-06B81, and 89170-50220. These numbers cover various model years of the Lexus ES350, so an accurate match is critical.
Compatibility of these control units typically extends to Lexus ES350 models from 2011 to 2021, depending on the respective part number and vehicle-specific VIN. A professional diagnosis is always recommended before Lexus ES ES350 airbag control unit repair.