What is a Lexus LC LC500h airbag control unit?
The Lexus LC LC500h airbag control unit is the central safety unit in your vehicle, precisely activating all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors sensor signals, stores important crash data, and ensures the correct functioning of all airbag modules for maximum occupant safety.
This electronic control unit, also known as the SRS module, coordinates and monitors the entire airbag system logic. It is crucial for the reliable and situation-appropriate deployment of the passive safety systems.
Thanks to its advanced sensor integration, the module reacts adaptively to impact severity and occupant position, ensuring that the airbags and seatbelt pretensioners optimally contribute to protecting vehicle occupants in an emergency.
Why is the Lexus LC LC500h airbag control unit defective?
A Lexus LC LC500h airbag control unit can fail for a variety of reasons, often after an accident, as it stores crash data and requires reprogramming or a reset. Internal electronic errors, voltage spikes, or age-related wear and tear can also lead to failure or malfunction, making an immediate Lexus LC LC500h airbag control unit repair essential.
After an accident, these modules store so-called crash data, which prevents them from further operation. In such cases, a reset service is often a more cost-effective alternative to purchasing a new one.
Other causes of failure include internal memory errors, problems with the communication interface to the vehicle, or disturbances in the control unit's power supply. These often lead to a permanently illuminated airbag warning light.
Common error codes for Lexus LC LC500h airbag control unit repair
Specific, publicly documented trouble codes exclusively for the Lexus LC LC500h airbag control module with part number 89170-11140 are rare; diagnostics often indicate general problems such as "crash data stored" or communication problems. However, generic airbag trouble codes can indicate internal module problems that require a specific Lexus LC LC500h airbag control module diagnosis and repair.
Although manufacturer-specific codes for this particular control unit aren't publicly available, generic B-codes provide insight into the problem. A precise trouble code query requires specialized diagnostic equipment.
During Lexus LC LC500h airbag control unit repairs, generic errors such as "Crash Data Stored" or "Internal ECU Error" are often detected after an accident. Specialized services can correct these errors and reset the module.
- B1000 → Control unit communication error → Problems with data transmission with other vehicle systems
- B1100 → Internal memory error → Damage or overflow of the control unit's internal data memory
- B1200 → Crash data memory full → Data saved after an accident blocks the module
- B1233 → Power supply error → Problems with the power supply to the airbag control unit
- B1240 → Control unit initialization error → The module could not start or calibrate correctly
What part numbers are available for the Lexus LC LC500h airbag control unit repair?
For the Lexus LC LC500h airbag control unit repair, the exact and 100% verified OEM part number 89170-11140 is the only known original part number, valid for Lexus LC 500h models from 2018 to 2024. According to official sources, there are no alternative OEM part numbers from suppliers for this specific airbag control unit, which clearly defines the spare parts procurement process.
This part number is the genuine Lexus part for the airbag control unit in the LC 500h. It is confirmed by several official Lexus dealers and parts catalogs.
When purchasing or repairing, please ensure that this OEM number matches to ensure compatibility. An incompatible control unit may cause malfunctions or compromise safety.