This SRS (Supplemental Restraint System) control unit is a direct-fit replacement designed for Citroën C5 II vehicles. It manages deployment logic for up to seven airbags and the pyrotechnic pretensioners, ensuring coordinated activation in the event of a collision. Suitable for professional workshops and experienced DIY mechanics, the unit is often searched by its product codes, so listing all relevant numbers below improves findability.

The control unit is ideal when you see SRS warning lights, stored airbag faults or after replacing crash sensors or wiring that affect the airbag circuit. Replacing the ECU restores correct fault reporting and deployment logic when the original module is malfunctioning or has been removed.

Technical Information

• Manufacturer: Citroën / Stellantis
• Model: Citroën C5 II (Second Generation)
• Product Codes: 9659532380, 603481900
• Other Numbers: 6545V0, 6545V1, NFP

Compatibility

Intended primarily for Citroën C5 II models. The same product codes may appear across related Stellantis models; verify parts numbers when searching. Commonly referenced by the codes above, which customers and workshops use to locate the correct unit.

Installation Recommendations

• Disconnect the negative battery terminal and wait at least 10 minutes to allow capacitors to discharge before beginning work.
• Locate the airbag control unit (typically mounted under the center console or under a seat depending on the vehicle specification) and remove mounting fasteners carefully.
• Avoid static discharge and handle connectors by the housings; inspect wiring and connector pins for corrosion or damage before installation.
• Fit the replacement unit securely, reconnect connectors and battery. Clear SRS fault codes with an appropriate diagnostic tool and confirm that no residual faults remain.
• Reprogramming or coding with a diagnostic interface may be required in some vehicle configurations to fully integrate the unit into the vehicle network.

Why This Part Fails Most Often

Airbag control units are robust but can fail due to moisture ingress or corrosion at connector points, electrical surges, damaged wiring, or the effects of a previous crash. Connector damage during interior repairs and long-term exposure to damp conditions are common causes. In some cases, internal component degradation such as capacitor failure can lead to intermittent faults and SRS warning lights.

When replacing the unit, also inspect associated crash sensors, wiring harnesses and mounting points. Addressing the root cause—corrosion, wiring faults or physical damage—prevents repeated failures and ensures the airbag system remains fully operational.

Part numbers printed above are the quickest way to find the correct replacement in catalogs and search engines. For professional diagnosis and safe installation follow standard SRS procedures and use appropriate diagnostic equipment to confirm correct operation after fitment.

This unit controls seven airbags equipped with pyrotechnic belts, delivering comprehensive protection for all passengers inside the vehicle. Airbags are a critical component of your vehicle’s safety system, and their proper operation is essential for occupant protection during accidents.

Technical Information

• Manufacturer: PSA Group
• Model: Citroën C5 II
• Product Codes: 9658177080, 603481900
• Additional Numbers: 6545V0, 6545V1, NFP

When choosing this airbag control unit, keep in mind that regular inspection and replacement of damaged components in the airbag system significantly enhance vehicle safety. This unit is ideal for replacing old or malfunctioning parts, helping to maintain the optimal performance of your airbag system.

Take advantage of this opportunity to acquire a high-quality, verified automotive part at an affordable price, improving your vehicle’s safety and providing peace of mind while driving. Always ensure proper installation, as a correctly functioning airbag system acts as a lifesaving shield for you and your loved ones in the event of a collision.

Model Compatibility: Citroën C5 II
Manufacturer: PSA Citroën Peugeot

Part Numbers: 9657456680, 603481900, 6545V0, 6545V1

How to Replace: Replacing the airbag control unit typically requires disconnecting the vehicle’s battery for safety, removing any covers or panels to access the unit, unplugging the old unit, and installing the new one. After installation, it is crucial to have the system reset and checked for errors.

Common Issues: The airbag control unit may fail due to various factors including electrical issues, impact damage, or software corruption. Regular checks should be made to ensure the system is functioning correctly.

Ensure your vehicle’s safety system is reliable by replacing your airbag control unit with this quality product.

The airbag control unit is a crucial component of your vehicle’s passive safety system. It controls the timely deployment of airbags in the event of a collision, significantly enhancing the protection of the driver and passengers. Since this part is vital for occupant safety, replacing a faulty unit with a dependable, tested component is essential, especially for vehicles with higher mileage or older age.

Technical Information

• Manufacturer: Citroën
• Model: C5 II
• Product Codes: 9657456680, 603481900, 6545V0, 6545V1
• Additional Numbers: 6545V1

This unit offers a cost-effective alternative to brand new parts without compromising reliability or safety. It is designed to restore the proper functionality of your vehicle’s airbag system, ensuring peace of mind on the road. Ideal for automechanics and car enthusiasts performing their own repairs, this control unit fits seamlessly and helps maintain vehicle safety compliance.

It is important to note that the condition of this unit is unknown; however, it is fully functional. Resetting of crash data may be required before installation.

Technical Information

• Manufacturer: Citroën
• Model: C5 II
• Product Codes: 9659532380, 603, 48 19 00, 6545V0, 6545 V0, 6545V1, 6545 V1
• Additional Numbers: 6545V0, 6545V1