Bentley Bentayga Mk1 Airbag Control Unit Repair

What is a Bentley Bentayga Mk1 airbag control unit?

The Bentley Bentayga Mk1 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 occupant safety.

It acts as the brain of the passive safety system and processes real-time signals from crash and acceleration sensors.

The control unit controls the deployment of front, side and head airbags as well as the seat belt tensioners in milliseconds after an impact.

In addition, it performs self-diagnostic functions and stores important crash data for later analysis.

Why is the Bentley Bentayga Mk1 airbag control unit faulty?

A Bentley Bentayga Mk1 airbag control unit can fail due to an accident, internal component failure, or age-related wear and tear. This is often indicated by an illuminated airbag warning light, signaling the need for immediate inspection and repair of the system.

Common causes of failure are internal short circuits or damaged capacitors after an accident.

An overvoltage in the vehicle electrical system or the ingress of moisture can also irreversibly damage the sensitive control unit.

A correct diagnosis in a specialist workshop is crucial to identify the exact cause of the defect.

Common error codes for Bentley Bentayga Mk1 airbag control unit repair

When repairing the Bentley Bentayga Mk1 airbag control unit, specific error codes are crucial, indicating problems directly with the control unit. Codes like B1000 or B0091 signal internal defects or communication problems that require precise diagnosis and expertise to resolve the failure.

• B1000 → Control unit communication error → There is a fault in the data transmission of the airbag control unit.
• B0091 → Control Unit Internal Error → The Airbag Control Module has an internal defect or malfunction.
• U0073 → Communication interruption with airbag control unit (CAN bus) → The connection between the control unit and the vehicle CAN bus is interrupted.

These codes directly indicate problems with the airbag ECU and are essential for troubleshooting.

For the Bentley Bentayga Mk1 airbag control unit repair, these codes should be a priority in the diagnosis in order to specifically fix the defect.

What part numbers are available for the Bentley Bentayga Mk1 airbag control unit repair?

For a successful Bentley Bentayga Mk1 airbag control unit repair, the exact OEM part number 4M0959655G is essential. Only this specific module is validated for the Bentley Bentayga Mk1 from 2015 onwards. Different part numbers from other VAG models are incompatible and could pose serious safety risks.

The officially confirmed OEM part number for the Bentley Bentayga Mk1 (model series from 2015) is 4M0959655G.

This part number is used by Bentley (OEM) and is the only one verified to be correct for this vehicle model.

Other supplier numbers could not be clearly assigned to the Bentayga Mk1 airbag control unit in professional databases.

When repairing the Bentley Bentayga Mk1 airbag control unit, please ensure that you only use this validated part number.

Compatibility with similar control units from Audi Q7/Q8 or Porsche Cayenne is not possible due to different programming.