Description
Steering Wheel Airbag, Driver Airbag for Peugeot 407
This steering wheel airbag is a direct-fit replacement for Peugeot 407 models and carries the manufacturer reference numbers shown below. Designed for mechanics and experienced DIY enthusiasts, the unit restores full frontal occupant protection when installed correctly. The part is commonly searched by OEM codes (96445891ZD, 4112HA), so including these identifiers in your order will help you locate the correct item quickly. Suitable for workshop installation, this airbag meets the original form, fit and function expected for Peugeot 407 steering systems.
Technical Information
- Manufacturer: Peugeot (Stellantis)
- Model: Peugeot 407 (Sedan, Estate / SW, Coupe)
- Product Codes: 96445891ZD
- Other Numbers: 4112HA
Function
The steering wheel airbag (driver airbag) is a core component of the Supplemental Restraint System (SRS). In the event of a significant frontal or near-frontal collision, the module deploys to reduce the risk of head and chest injuries. The airbag module works together with the crash sensors, control unit and the clock spring (spiral cable) to ensure signal and deployment integrity.
Typical Failure Modes
Airbag modules most commonly become unusable after deployment in a crash. Other reasons for failure or a persistent SRS warning light include electrical faults in the clock spring (spiral cable), damaged or corroded connector pins, previous improper removal/installation, water ingress to the steering column area, or internal connector faults. A persistent SRS warning typically indicates the system requires diagnostic attention and fault clearance with an appropriate tool.
Replacement Procedure (Overview)
- Disconnect the battery negative terminal and wait at least 10 minutes to allow the SRS capacitors to discharge.
- Center the steering wheel and note its alignment to ensure correct reinstallation.
- Access and remove the retaining fasteners for the airbag module (follow vehicle-specific service manual for exact fastener types and locations).
- Carefully disconnect the airbag electrical connectors using a non-metallic tool where possible; avoid pulling on wires.
- Remove the airbag module and place it face up on a stable surface away from heat sources and electrical equipment.
- Fit the replacement module, reconnect connectors securely, reinstall fasteners to the manufacturer’s torque values and confirm steering wheel alignment.
- Reconnect the battery and use a diagnostic tool to read/clear SRS fault codes and confirm system readiness.
Installation Recommendations
- Always disconnect the battery negative terminal and wait a minimum of 10 minutes before starting work to reduce the risk of accidental deployment.
- Follow the vehicle manufacturer’s service manual for removal and installation procedures and torque specifications.
- Handle the airbag module with the trim facing upward and never place heavy objects on top of the module.
- Inspect the clock spring (spiral cable) and steering column connectors for damage or corrosion; replace if any defects are found.
- After installation, verify SRS system status and clear fault codes with an appropriate PSA/Peugeot diagnostic tool (e.g., DiagBox/Lexia/PP2000) to ensure the airbag readiness indicator behaves correctly.
- If you are not experienced with SRS systems, have the replacement carried out or checked by a qualified technician. Incorrect handling can render the system inoperative or cause unintended deployment.
Reason This Part Most Commonly Fails
The most frequent cause of airbag module failure is deployment in a collision. Outside of impacts, the leading causes of service complaints are electrical issues tied to the clock spring or connector corrosion, and damage sustained during improper removal or prior repairs. Regular inspection after water leaks or steering column work helps prevent unexpected SRS warnings.
