Airbag control unit with part number 9804502280

What does the airbag control unit 9804502280 do?

The airbag control unit 9804502280 coordinates the restraint system (SRS) of Peugeot: it checks the crash sensors, triggers the appropriate airbags and seatbelt pretensioners in an accident, and monitors the entire system.

Because the decision has to be made in milliseconds, the unit works without delay. If a fault is present, it appears on the airbag warning light. If an accident has occurred, the unit secures the crash data and stays locked. Only a repair lifts the lock.

The system checks itself continuously, and that is exactly what makes it reliable in everyday use. If you take the messages of the system seriously, you keep track.

Why does the control unit 9804502280 fail?

In practice a crash may be behind it: stored crash data remains in place even if no airbag has triggered, and a normal diagnostic tool cannot reach it.

Other causes can be inconspicuous and related to years of operation or environmental influences:

• electronic components that weaken with the years
• cold solder joints
• moisture or corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump start

Which of these points applies only becomes clear through a thorough examination in the test lab.

How can you tell that the 9804502280 is defective?

The airbag warning light in the instrument cluster lights up permanently or flickers intermittently. Accompanying this, the instrument cluster shows a fault message, the diagnostic tool does not find the control unit, and the fault memory cannot be erased.

If a diagnostic tool cannot establish a connection, the cause may lie in the control unit itself or in the wiring to it. In an emergency, airbags and seatbelt pretensioners may not trigger, so such a message should be checked promptly.

The combination of several signs is what matters most, because a single symptom says little about the cause.

Which vehicles is the 9804502280 fitted in?

The control unit 9804502280 is fitted in these vehicles: Peugeot 308 II (2013-2017) and II Facelift (2017-2021).

Here follows the assignment that we have for this part number.

• Peugeot 308 II (2013-2017)
• Peugeot 308 II Facelift (2017-2021)

Read out the fault memory before you remove the unit. This clarifies whether the control unit is really the cause or whether a connector or cable is responsible. Additionally compare the imprint on the removed unit with the part number.

For the same vehicles, we also repair control units with the part numbers 624926000, 9807568180.

How does the repair of the 9804502280 work?

You first read out the fault memory, enclose the log, disconnect the battery and remove the control unit. Then you create the repair order online and send the unit in well packed. At Airbag24 processing usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, repairs the defective components, removes the crash data from the memory and carries out a function test. These working days apply only to testing, repair and checking at Airbag24, not to the path of the parcel. Afterwards your own unit comes back to you.

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 9804502280 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 to the address you gave.

The printed repair order belongs in the parcel, and the control unit should be packed shock-resistant.