Airbag control unit with part number 9803915780

What does the airbag control unit 9803915780 do?

The airbag control unit 9803915780 controls the restraint system (SRS) of Citroën and Peugeot. It evaluates the signals from the crash sensors, decides within milliseconds in the event of an accident which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. It reports faults via the airbag warning light.

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

The control unit is the central point where all components of the restraint system come together. If it fails, the system can no longer react as intended.

Why does the control unit 9803915780 fail?

The most common cause with the 9803915780 is crash data stored after an accident, even if no airbag has deployed; in addition, aged components, cold solder joints and moisture at plug connections play a role.

Crash data cannot be erased with a normal diagnostic tool, so it remains stored. Crash data therefore remains the main point with this control unit.

Voltage spikes, for example from a weak battery or when starting with a jump start, can also stress the unit. Aged electronic components are likewise a factor, and moisture at plug connections is a further cause.

How can you tell that the 9803915780 is defective?

The airbag warning light in the instrument cluster indicates a defect in the 9803915780 when it lights up permanently or intermittently. A fault message in the instrument cluster, a missing connection between the diagnostic tool and the control unit, or a fault memory that cannot be cleared also point to this.

As long as the defect persists, airbags and seatbelt pretensioners may not be able to trigger in an emergency. That is exactly why the warning light is an important indication of a problem in the system.

Please have the finding checked promptly.

Which vehicles is the 9803915780 fitted in?

The 9803915780 is used in these vehicles: Citroën Berlingo II B9 (2008-2012), II 2nd Facelift (2015-2018) and II 1st Facelift (2012-2015); Peugeot Partner II 1st Facelift (2012-2015), II (2008-2012) and II 2nd Facelift (2015-2019); Citroën Berlingo Multispace II 1st Facelift (2012-2015), II 2nd Facelift (2015-2018) and II B9 (2008-2012).

The following vehicles are recorded for this part number:

• Citroën Berlingo II B9 (2008-2012)
• Citroën Berlingo II 2nd Facelift (2015-2018)
• Citroën Berlingo II 1st Facelift (2012-2015)
• Peugeot Partner II 1st Facelift (2012-2015)
• Peugeot Partner II (2008-2012)
• Peugeot Partner II 2nd Facelift (2015-2019)
• Citroën Berlingo Multispace II 1st Facelift (2012-2015)
• Citroën Berlingo Multispace II 2nd Facelift (2015-2018)
• Citroën Berlingo Multispace II B9 (2008-2012)

Compare the part number on the label of the removed unit with this page. This only ensures that it is the correct unit. Also have the fault memory read out beforehand, because only the result shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 6590PK, 9665250280, 9665558380, 9665558480, 9665944180, 9673393980.

How does the repair of the 9803915780 work?

For the 9803915780, first have the fault memory read out and attach the log, then disconnect the battery and remove the control unit. Then create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components and carries out a function test. After that your own unit is sent back to you.

A repair of a defect remains possible with this control unit. This sequence also serves safety at the vehicle.

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 9803915780 get to Airbag24?

You can send the control unit 9803915780 in as a parcel or have it collected by UPS for an extra charge. After the repair, Airbag24 sends the unit back by UPS.

Put the printed repair order into the parcel and pack the unit shockproof.