Description
Steering Wheel Airbag, Driver’s Airbag for Peugeot 407.
High-quality replacement steering wheel airbag designed for Peugeot 407 models. This driver’s airbag module is commonly searched by part numbers 96445891ZD and 4112HA and provides the primary frontal restraint for the driver in a collision. Ideal for professional garages and experienced DIY mechanics, the module restores SRS protection after deployment or fault diagnosis. The unit should be handled with care and installed by someone familiar with airbag and steering system procedures to ensure safety and correct operation.
Technical Information
- Manufacturer: Peugeot (Stellantis)
- Model: Peugeot 407
- Product Codes: 96445891ZD, 4112HA
- Other Numbers: 96445891ZD; 4112HA
Function and Typical Service Life
The steering wheel airbag is a key component of the Supplemental Restraint System (SRS). It inflates in milliseconds during a qualifying frontal impact to reduce injury to the driver. Airbags have no defined service interval, but they must be replaced after deployment. Faults that trigger the airbag warning lamp (SRS light) indicate that the system should be diagnosed and repaired without delay.
Installation Recommendations
- Always disconnect the battery before starting work and wait at least 10 minutes (manufacturer recommendations may specify up to 30 minutes) to allow residual charge to dissipate.
- Follow the vehicle manufacturer’s removal and installation procedure. Remove trim and steering wheel components carefully to avoid damage to the clockspring (spiral cable).
- When disconnecting electrical connectors, do so gently and avoid bending pins. Do not apply power to the airbag connector outside the vehicle.
- Ensure the clockspring/spiral cable is correctly aligned before fitting the steering wheel; if damaged, replace the clockspring to avoid steering angle or airbag faults.
- Tighten the steering wheel retaining nut/bolt to the manufacturer’s torque specification.
- After installation, clear SRS fault codes and perform a system check with a compatible diagnostic tool; the airbag warning light must extinguish for normal operation.
- Handle and store the airbag module with the padded face upwards, avoid impacts, heat sources and static discharge.
Why This Part Most Commonly Fails
- Deployment in a Collision: Airbags are single-use components and must be replaced after activation.
- Electrical Faults: Damage or wear to the clockspring (spiral cable) or connectors can cause open circuits or short circuits, triggering SRS faults.
- Corrosion or Water Ingress: Moisture in connector areas can lead to intermittent faults or failure to fire.
- Improper Handling During Repairs: Dropping or incorrect storage can damage the inflator or initiator.
- Age-Related Degradation: While not a scheduled wear item, long-term exposure to harsh environments can affect connectors and mounting hardware.
Notes For Mechanics and DIYers
- This part is commonly identified by part numbers 96445891ZD and 4112HA; always verify part numbers against the vehicle’s service literature when possible.
- Replacement often involves steering wheel removal and possibly steering angle sensor recalibration; factor diagnostic and coding time into the job.
- If the airbag has deployed, replace any associated components (clock spring, steering wheel, impact sensors) as required by the vehicle manufacturer.
