Airbag control unit with part number LR118105

What is the function of the LR118105 airbag control unit?

The LR118105 airbag control unit is the central control module for the occupant protection system in the Land Rover Range Rover Velar L560. It analyzes data from crash sensors and, within milliseconds, determines whether to deploy airbags and seatbelt pretensioners, ensuring passenger safety in the event of a collision.

As an original Land Rover module, this control unit is precisely tailored to the vehicle architecture of this premium SUV. It manages and monitors all airbag sensors as well as the complex deployment logic, ensuring that the restraint system operates accurately and reliably when needed.

Why does the LR118105 control unit fail?

Malfunctions in the LR118105 control unit are often caused by electronic component failures resulting from aging, vibrations, or moisture. A common issue is complete loss of communication, where the module becomes unresponsive via the OBD interface. Internal faults can also lead to the airbag warning light remaining constantly illuminated.

The sophisticated electronics inside the control unit may degrade over time. Defective components such as capacitors or integrated circuits (ICs) are typical causes of failure. These hardware defects prevent the control unit from performing its safety-critical functions correctly.

How do you recognize a fault in the LR118105?

A malfunction of the LR118105 airbag control unit usually manifests as a continuously illuminated airbag warning light on the Range Rover Velar’s instrument cluster. Additionally, the control unit may no longer communicate with diagnostic tools, making it impossible to perform error diagnostics via the OBD interface. Sensor-related error messages can also indicate an internal fault within the module.

The most obvious sign is the persistently lit airbag indicator light, which fails to turn off after starting the vehicle—this points to a serious, safety-relevant system error.

Another clear symptom occurs when the workshop loses access to the control unit. A communication breakdown with the diagnostic tool via the OBD port often confirms an internal electronic fault in the module.

Sometimes, error codes for individual sensors are mistakenly stored in the fault memory, even though the actual cause lies within the control unit itself rather than in external components.

In which vehicles is the LR118105 airbag control unit installed?

The airbag control unit with part number LR118105 is exclusively designed for the Land Rover Range Rover Velar of the L560 series. This includes all model variants produced from 2017 to the present, including the facelifted model launched in 2023. Airbag24 specializes in repairing this specific module.

At Airbag24, we repair the LR118105 part number for the following models:

Land Rover Range Rover Velar (L560 series, model years 2017–2023)

Land Rover Range Rover Velar (L560 facelift, model year 2023 onward)

Compatibility with other Land Rover models or older vehicles is not supported due to system limitations.

Is it worth repairing the LR118105 control unit?

Yes, repairing the LR118105 is both economically and technically sensible compared to purchasing a new unit. According to the manufacturer, a new part costs between €820 and €980, whereas repair offers significant cost savings. Moreover, the original vehicle coding remains intact, eliminating the need for time-consuming reprogramming at the workshop.

The biggest advantage is the substantial cost reduction compared to buying a new component. You can save a high three-digit sum while receiving a fully functional, tested replacement part.

Since the original device is refurbished, there’s no need to relearn or recode the control unit for the vehicle—it can be used immediately after installation.

Furthermore, refurbishing electronic components is more environmentally friendly than manufacturing a new part. Each repair also comes with 2 years' statutory liability for defects.

How does the repair process work at Airbag24?

The repair process at Airbag24 is standardized to ensure top quality. After removal and shipment of the control unit, a precise diagnosis is performed on Land Rover‑calibrated test benches. Defective electronic components are replaced with OEM‑grade equivalents, and the circuit board is overhauled. Finally, the unit undergoes testing and is returned with 2 years’ statutory liability for defects.

Once the removed control unit arrives at Airbag24, it undergoes a comprehensive incoming inspection. Using specialized diagnostic software and test adapters, the exact fault on the circuit board is identified.

In the next step, defective electronic components, such as ICs or capacitors, are professionally replaced. Only original‑equipment‑manufacturer‑quality replacement parts are used.

After repair, the control unit undergoes an extensive functional test that simulates correct communication and all safety‑critical functions. The device is released for return shipping only upon passing this test.