What is a Ford Mondeo Mk3 airbag control unit?
The Ford Mondeo Mk3 airbag control unit is the central safety unit that precisely controls all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of a collision. It continuously monitors sensors, stores important crash data, and ensures the proper functioning of all airbag modules for maximum vehicle safety.
This module, often referred to as the airbag ECU, processes all incoming signals from the crash sensors in real time. It determines the precise deployment of the restraint systems.
As a safety-critical component, it must always be fully functional to protect lives in the event of an accident. Regular diagnostics of the system contribute to overall vehicle safety.
Why is the Ford Mondeo Mk3 airbag control unit faulty?
A Ford Mondeo Mk3 airbag control unit often fails because it often stores irreversible crash data after an accident. Internal electronic components can also fail, or communication errors with other systems can occur. This failure makes a specialized Ford Mondeo Mk3 airbag control unit repair essential to restore safety.
After an accident, these control units store so-called crash data, which prevents them from being used again. Even without an accident, internal circuit errors or a general control unit failure can occur, activating the airbag warning light.
Age-related wear and tear on components or sporadic communication problems via the CAN bus are also common causes of a defect. A precise diagnosis is essential before considering a Ford Mondeo Mk3 airbag control unit repair.
Common error codes for Ford Mondeo Mk3 airbag control unit repair
Common error codes are crucial for accurately diagnosing a faulty Ford Mondeo Mk3 airbag control unit. They indicate specific internal problems such as circuit faults, communication problems, or stored crash data. A detailed error analysis of these codes is a prerequisite for a successful Ford Mondeo Mk3 airbag control unit repair or module reset.
These codes indicate problems directly within the control module, not external sensors or seat belt pretensioners.
- **B1000** → Control unit communication error → Internal failure or communication problem of the airbag control unit.
- **B0001** → Driver side airbag circuit error → High resistance or open circuit in the driver side airbag internal circuit in the control module.
- **B0002** → Driver Side Airbag Second Stage Circuit Failure → Problem with the internal deployment control of the driver side airbag second stage.
- **B0003** → Driver side airbag deployment control error → Internal error in the driver airbag deployment process in the control unit.
- **B0020** → Passenger side airbag circuit failure → Internal circuit failure of the passenger side airbag in the control unit.
- **B0028** → Passenger side airbag second stage circuit failure → Internal problem with the second stage deployment of the passenger side airbag.
- **B1193** → Crash data stored in the airbag control unit → An accident event has stored trigger data in the control unit's memory that must be deleted.
- **U3000** → Control unit failure or general error → General internal defect or failure of the airbag ECU, often after a crash event.
- **U2017** → Communication error between airbag control unit and other systems → Malfunction in the data transmission between the airbag control unit and the vehicle network.
What part numbers are available for the Ford Mondeo Mk3 airbag control unit repair?
Several specific OEM part numbers are relevant for Ford Mondeo Mk3 airbag control unit repairs, as different manufacturers and model years require different control units. Precise identification of the part number, often via VIN matching, is absolutely crucial for compatibility and a successful repair of this safety-critical component.
These OEM part numbers have been carefully verified for the Ford Mondeo Mk3 Airbag Control Unit (approx. 2000-2007).
They represent genuine parts from Ford and its suppliers and are exclusively airbag control units, not other modules or sensors. A professional workshop can identify the exact number for your vehicle.
- **4S7T-14B056-AB**: Ford Original (FoMoCo), often from Autoliv.
- **3S7T-14B056-AB**: Ford Original, often produced by Visteon.
- **1S7T-14B056-BG**: Ford Original, often found in used units.
- **AM2T-14B321-AC**: Ford / Bosch OEM part number (Bosch internal: 0285010835).