Airbag control unit with part number 9836801080

What does the airbag control unit 9836801080 do?

The airbag control unit 9836801080 is the central control unit of the restraint system for Peugeot. It evaluates the crash sensors, decides in an accident within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. After an accident it locks itself.

The unit shows faults via the airbag warning light in the instrument cluster. The evaluation takes the full course of an impact into account.

After an accident, the unit stores crash data in its memory, and this data plays a central role in later failures.

Why does the control unit 9836801080 fail?

The most common cause of a failure of the 9836801080 is crash data stored after an accident, even if no airbag was triggered. A normal diagnostic tool cannot erase it.

Besides this, the following causes are possible:

• aged electronic components
• cold solder joints
• moisture and corrosion on the plugs
• voltage spikes from a weak battery or jump-starting

The exact cause can only be determined when the unit is examined.

How can you tell that the 9836801080 is defective?

A defect in the 9836801080 shows up as the airbag warning light, which is either permanently lit or only lights up intermittently. A fault message in the instrument cluster, a missing connection to the diagnostic tool or a fault memory that cannot be cleared also belong to this. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

The airbag warning light may catch the eye first. If it stays on or keeps coming on, do not rely on the vehicle working normally. Have the fault memory read out instead.

A single sign does not prove that the control unit itself is affected, because wiring can also cause such symptoms.

Which vehicles is the 9836801080 fitted in?

The 9836801080 is fitted in these vehicles: Peugeot 508 II (2018-2023) and II Facelift (2023-2025).

These vehicles are assigned to this part number:

• Peugeot 508 II (2018-2023)
• Peugeot 508 II Facelift (2023-2025)

Read out the fault memory before you remove the unit, so that it becomes clear whether a plug or a cable is the problem. Then compare the part number on the label of the unit with this information.

For the same vehicles, we also repair control units with the part numbers 1670945480, 9678656380, 9823741580.

How does the repair of the 9836801080 work?

Before removal, read out the fault memory, disconnect the battery and remove the 9836801080. Then create a repair order online. Processing at Airbag24 usually takes 3–4 working days.

Enclose the log of the fault memory with the unit before you pack it and send it to Airbag24.

Airbag24 checks the unit on the test bench, replaces defective components from your unit, erases the stored crash data and performs a function test. Afterwards you receive your own unit back.

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 9836801080 get to Airbag24?

You send the 9836801080 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

Print out the repair order and put it in the parcel. The unit should be packed shock-proof.