What is a Lexus LS LS500h airbag control unit?
The airbag control unit for the Lexus LS 500h is a central electronic module that monitors and controls the airbag system in this luxury hybrid vehicle. It performs the critical task of precisely controlling airbag deployment in the event of an accident to maximize occupant safety.
This electronic control unit is microprocessor-based and boasts high computing power for real-time evaluation of all sensor signals. It analyzes inputs from acceleration and crash sensors, seat belt pretensioners, and other safety sensors.
The module is networked with other vehicle control units via the CAN bus system and communicates precisely for fault diagnosis and feedback. Its primary function is the controlled, multi-stage ignition of the airbag modules within milliseconds of an impact.
Why is the Lexus LS LS500h airbag control unit defective?
A Lexus LS LS500h airbag control unit often becomes defective due to internal memory errors, communication problems in the CAN bus, or power supply issues, which cause the system to stop functioning properly and compromise the safety systems.
Internal diagnostic errors or a faulty self-test of the control unit can cause the airbag warning light to stay on. An EEPROM error in the unit's memory can also impair functionality and require a Lexus LS LS500h airbag control unit repair.
Power supply errors or configuration problems within the module prevent proper initialization or operation of the entire airbag system. Such defects render the vehicle unsafe and require immediate attention at the workshop.
Common error codes for Lexus LS LS500h airbag control unit repair
Specific B-codes are typical for Lexus LS LS500h airbag control unit repairs. These codes directly indicate malfunctions within the module itself, such as internal memory, communication, or power supply problems, which can limit the airbag system's operational readiness.
- B1000 → Control unit communication error → A malfunction in the data transmission between the airbag control unit and other systems.
- B1020 → Internal control unit memory error → A defect in the internal data memory of the airbag control unit.
- B1066 → Airbag control unit power supply error → Problems with the voltage supply to the airbag module.
- B1610 → EEPROM error in the control unit → Damage to the non-volatile memory (EEPROM) of the airbag control unit.
- B1800 → Internal diagnostic error in the control unit → The airbag control unit detects an internal error during its self-diagnosis.
- B1820 → Error in the control unit “self test” → The airbag control unit failed the internal function test.
- B1930 → Configuration error in the control unit → An incorrect or damaged software configuration in the airbag control unit.
What part numbers are available for the Lexus LS LS500h airbag control unit repair?
For the Lexus LS LS500h airbag control unit repair, several verified Lexus OEM part numbers are available, ensuring the compatibility and originality of the replacement part and an exact match to the vehicle model.
These part numbers are released directly by the manufacturer Lexus and are taken from official parts catalogs. They also include compatible replacement or alternative numbers within the Lexus OEM series, whose functionality and compatibility are guaranteed.
When repairing the Lexus LS LS500h airbag control unit, it is critical to use one of the following genuine part numbers to ensure safety and system integration:
- 89970-50090
- 89970-50031
- 89970-50030
- 89170-50K83
- 89970-50021
- 89170-0E310
- 89170-50K81