Original AUTOLIV airbag control unit (SRS ECU) for Citroën Xsara Picasso. A used, fully functional part from a PSA car – an ideal replacement for a faulty airbag module. Also searched for airbag ECU, SRS unit, airbag module.

Main advantages
– Original AUTOLIV/PSA – reliability and 100% compatibility of the interface with the car
– Economical repair compared to a new unit
– Proven functionality, ready for professional assembly

Part numbers (for exact tracking)
– PSA/Citroën/Peugeot: 9650137080
– AUTOLIV/PSA: 602327400
– Service/PSA code: 6556RA
Tip: Always compare the number on your original unit – if it matches the above, the match is very likely.

Compatibility
– Citroën Xsara Picasso (N68), approximately 1999-2010
– Suitable for various equipment and engines (petrol and diesel)
Note: For airbag ECUs, the exact OEM number and vehicle equipment (number of airbags, presence of side/front bags, etc.) decide. When in doubt, verify compatibility by VIN.

Technical information
– Function: SRS system control unit (airbags and belt pretensioners)
– Power supply: 12 V, communication via PSA diagnostics (OBD)
– Manufacturer: AUTOLIV (original supplier for PSA)
– Location in the car: usually center tunnel/under the center console (may vary by year and equipment)

Status and testing
– Used, fully functional disassembled part
– Visually inspected, no mechanical damage to the unit body
– The unit communicates in diagnostics; the specific configuration may require customization of the car

Assembly and service recommendations
– Before any work on the SRS, always disconnect the battery and wait min. 10-15 minutes
– Entrust installation to an expert – this is a safety system
– After installation, carry out diagnostics, erase any errors and, if necessary, code the SRS configuration to your car’s equipment
– For some units, it may be necessary to delete the so-called crash data before use

Who is the piece intended for?
– Auto mechanics and experienced repairers who need to quickly replace a faulty SRS unit
– Anyone searching exactly by part number 9650137080 / 602327400 / 6556RA for Xsara Picasso

Package contents
– 1× AUTOLIV airbag control unit (ECU SRS)

Search keywords
Citroën Xsara Picasso Airbag ECU, AUTOLIV SRS Unit, Airbag Control Unit 9650137080, 602327400, 6556RA, Citroën Airbag Module, PSA Airbag ECU Xsara Picasso

This is a used but fully functional Airbag Electronic Control Unit (ECU) manufactured by Autoliv for the Citroen Xsara Picasso. The unit is a direct-fit replacement often sought by part number: 9652276980, 9650137080, 602327400, 6556RA. It is designed to manage the vehicle’s airbag deployment logic and crash event recording for occupant protection.

Function And Common Symptoms Of Failure

The airbag ECU coordinates deployment timing and verifies sensor inputs to trigger airbags and seatbelt pretensioners during a collision. When the unit fails or is damaged, common symptoms include:

• Airbag warning light illuminated on the dashboard
• Inoperative airbags or restraint system faults reported by diagnostic tools
• Error codes related to crash data, sensor communication, or internal faults

Causes And When To Replace

Typical causes of ECU failure are impact damage from an accident, water ingress or corrosion, electrical surges, connector damage, or internal electronic degradation over time. Replace the unit if fault codes identify ECU errors, if crash-related memory prevents normal operation, or if airbags are disabled and cannot be reset by standard diagnostics.

Replacement And Installation Guidance

Professional installation is recommended. Basic replacement steps used by experienced mechanics:

• Disconnect the vehicle battery and wait the manufacturer-recommended time to avoid accidental deployment.
• Locate and remove the instrument panel or trim as needed to access the airbag ECU mounting point.
• Carefully unplug the ECU connectors, inspect wiring and connectors for damage, and install the replacement unit.
• Perform a full diagnostic scan and clear stored crash codes if appropriate. Some vehicles require coding or calibration of the new unit using manufacturer-level tools.
• Verify system operation and that no airbag or restraint faults remain.

Because the airbag system is a critical safety component, any uncertainty should be resolved by a qualified automechanic with the correct diagnostic equipment.

Technical Information

• Manufacturer: Autoliv
• Model: Citroen Xsara Picasso
• Product Codes: 9652276980, 9650137080, 602327400, 6556RA
• Other Numbers: Not Available

Compatibility And Notes

This ECU is intended for use on Citroen Xsara Picasso vehicles and is referenced under the PSA group parts listings (Citroen and Peugeot part numbers appear in common searches). Buyers often locate this part by its product codes, so listing those numbers helps ensure correct fitment. Always confirm compatibility against your vehicle’s VIN and current part references before purchase.

If you are a professional mechanic or a competent DIYer, this Autoliv airbag ECU offers a practical replacement to restore the safety functions of the restraint system. Ensure proper diagnostics, secure installation, and any required coding to return the vehicle to full operational condition.