Airbag control unit with part number 9652276980

What does the airbag control unit 9652276980 do?

The airbag control unit 9652276980 is the central control unit of the restraint system (SRS) of Citroën. It evaluates the signals from the crash sensors, decides in a collision within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously. It shows faults via the airbag warning light.

During driving, the unit continuously checks whether all connected components are working. The decision in an emergency is made so fast that it happens without any action by the driver.

After an accident, the unit stores crash data and locks itself.

Why does the control unit 9652276980 fail?

The most frequent cause is crash data stored after an accident, even if no airbag was triggered; a normal diagnostic tool cannot erase it. In addition, there are aged electronic components, cold solder joints, moisture and corrosion at connectors, and voltage spikes, for example from a weak battery or jump-starting.

The crash data remains in the unit's memory even if the vehicle drives normally afterwards. That is why storage comes first when the cause is being sought.

The other causes lie in the electronics themselves. Components age over time, solder joints can go cold, and moisture or corrosion disturb the contact at connectors. Voltage spikes can damage components when the battery is weak or a jump start was needed.

How can you tell that the 9652276980 is defective?

A defect shows up as the airbag warning light staying on permanently or intermittently, and as error messages in the instrument cluster. A diagnostic tool without connection to the control unit, or a fault memory that cannot be cleared, is also a sign.

• Airbag warning light in the instrument cluster stays on permanently or intermittently
• Error message in the instrument cluster
• Diagnostic tool receives no connection to the control unit
• Fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may then not deploy. If the warning light is on, have the system checked promptly.

Which vehicles is the 9652276980 fitted in?

The control unit 9652276980 is fitted in these vehicles: Citroën Xsara Picasso I Facelift (2004-2010) and I (1998-2004); Citroën Xsara I Facelift (2000-2006) and I (1997-2000). You check whether your vehicle is among them by comparing it with the details in this section.

The following overview serves as a reference:

• Citroën Xsara Picasso I Facelift (2004-2010)
• Citroën Xsara Picasso I (1998-2004)
• Citroën Xsara I Facelift (2000-2006)
• Citroën Xsara I (1997-2000)

Compare the part number on the label of the removed unit with this page. This only ensures that you have the right unit in front of you. Have the fault memory read out beforehand, because only the result shows whether the control unit is defective or a connector or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 550535300, 550741100, 550776300, 550893100, 9632167780, 9633504180.

How does the repair of the 9652276980 work?

First have the fault memory read out and attach the log, then disconnect the battery and only afterwards remove the control unit. Then create a repair order online and send the unit well packed. Processing at Airbag24 takes 3–4 working days as a rule.

Airbag24 checks the unit on the test bench, replaces defective components, deletes stored crash data and carries out a function test. The own, repaired unit is then returned to you.

The sequence matters for safety: the control unit is removed only once the battery is disconnected. Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit 9652276980 get to Airbag24?

You send the unit as a parcel, or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back by UPS.

Put the printed repair order into the parcel and pack the control unit shock-proof.