Citroën XM I airbag control unit repair

What is a Citroën XM I airbag control unit?

The Citroën XM I 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 and pyrotechnic belt tensioners in the vehicle. A professional Citroën XM I airbag control unit repair ensures safety.

This electronic module continuously receives data from crash, acceleration, and deceleration sensors. It processes this information at lightning speed to precisely deploy the airbags in the event of an actual impact. The control unit is crucial to the passive safety of the Citroën XM I.

The compact, robust housing of the airbag control unit is securely protected against shocks and environmental influences. It features multi-pin connectors, typically marked yellow, for secure data transmission and power supply. These special connectors are equipped with locking devices to prevent misconnections and ensure safety.

Why is the Citroën XM I airbag control unit defective?

A Citroën XM I airbag control unit often fails because it stores crash data after an accident, requiring reinitialization or repair. Internal memory errors, software problems, or insufficient supply voltage can also lead to failure. A necessary Citroën XM I airbag control unit repair reliably resolves these issues.

After an impact, the control unit stores indelible crash data, preventing re-deployment and necessitating repair. This is an important safety measure to ensure that only fully functional systems remain in the vehicle. Without professional repair, the airbag warning light will remain active.

Internal errors in the module's memory or software can also lead to malfunctions. Such defects impair the control unit's ability to perform self-diagnostics and control the safety systems. A persistently low vehicle electrical system voltage can also damage the sensitive control unit.

Common error codes for Citroën XM I airbag control unit repair

During Citroën XM I airbag control unit repairs, specific error codes occur that indicate problems directly with the control unit. These codes help specialist workshops identify the exact cause of the defect, whether it's a communication issue, a memory error, or insufficient power supply during diagnostics.

• B1000 → Control unit communication error / control unit defective → The airbag control unit cannot communicate or has failed internally, which requires immediate diagnosis.
• B1620 → Memory error in the airbag control unit → The internal error memory of the control unit is damaged or cannot be read, often a case for repair or reset.
• B1102 → Supply voltage too low → The electrical voltage to the control unit is insufficient, which impairs its function and can lead to failure.

What part numbers are available for Citroën XM I airbag control unit repair?

For Citroën XM I airbag control unit repairs, specific OEM part numbers are essential to ensure compatibility and safety. It is crucial to use only the correct, verified original parts for your model (approx. 1996-2001) to avoid future errors or failures. Thorough research prior to repair is essential.

• 96195601ZL → Citroën / Autoliv → Original / OEM airbag control unit for Citroën XM I.
• 9628757780 → Citroën / Autoliv → Original / OEM airbag control unit for Citroën XM I, often listed as a reference number.
• A2C59512985 → Autoliv / Bosch / Continental → Original / OEM airbag control unit, suitable for Citroën XM I (1996–2001) with Teves MK 20E/IE systems.