Airbag control unit with part number 9635002680

What does the airbag control unit 9635002680 do?

The 9635002680 is the airbag control unit of the restraint system (SRS) in Peugeot vehicles. It evaluates the crash sensors, decides in an accident within milliseconds on the triggering of the airbags and seatbelt pretensioners, and monitors the system constantly. It indicates faults via the airbag warning light.

Monitoring covers sensors, wiring and control. Deviations are stored in the fault memory.

An accident causes the unit to store crash data and then lock itself.

Why does the control unit 9635002680 fail?

The most common cause is crash data stored after an accident, even without an airbag deployment; a standard diagnostic tool cannot delete it. Further causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or jump-starting.

The crash data stays in the unit until Airbag24 removes it during the repair. A diagnostic tool cannot reach it.

The remaining causes are technical in nature: ageing of components, moisture in the contacts and electrical stress from voltage spikes.

How can you tell that the 9635002680 is defective?

The airbag warning light in the instrument cluster lights up constantly or intermittently. In addition, a fault message appears in the instrument cluster, the diagnostic tool receives no connection to the control unit, and the fault memory cannot be cleared.

The light indicates the finding immediately, and it is built to do so. Even intermittent lighting is a message that must be taken seriously.

In an emergency, airbags and seatbelt pretensioners may not deploy with such a defect.

Which vehicles is the 9635002680 fitted in?

The 9635002680 is fitted in these vehicles: Peugeot 106 S2 (1996-2003).

The list of vehicles appears directly below:

• Peugeot 106 S2 (1996-2003)

On the one hand, compare the part number on the label of the removed unit with this page, which ensures the correct unit. On the other hand, have the fault memory read out beforehand. Only this result shows whether the control unit or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 261204625, 550404200, 550579000, 654779, 9623738080, 9630551480.

How does the repair of the 9635002680 work?

First have the fault memory read out and enclose the log, then disconnect the battery and only then remove the control unit. Next, create a repair order online and send the unit in, well packed. Testing, repairing and checking at Airbag24 usually take 3–4 working days.

The order protects at every step and is therefore mandatory.

Airbag24 examines the unit on the test bench, replaces defective components, deletes the crash data and carries out a function test. The unit then goes back to the sender.

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 9635002680 get to Airbag24?

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

Place the printed repair order in the parcel and pack the control unit shock-proof.