Airbag control unit with part number 9666343280

What does the airbag control unit 9666343280 do?

As the central unit, the airbag control unit 9666343280 controls the restraint system (SRS) of Peugeot. It checks the signals from the crash sensors and, in the event of an accident, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

The housing also carries the manufacturer's part number Bosch 0285010399.

The unit monitors the system continuously and reports faults via the airbag warning light. After an accident it stores crash data and locks itself.

Why does the control unit 9666343280 fail?

Stored crash data is the most common cause of the 9666343280 failing, even if no airbag has deployed. Other causes include ageing electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Stored crash data cannot be erased with a standard diagnostic tool; Airbag24 removes it during the repair. The other causes relate to the condition of the components: over time electronic components age, solder joints can go cold, and voltage spikes, for example from a weak battery or jump-starting, put strain on the circuits.

How can you tell that the 9666343280 is defective?

The airbag warning light in the instrument cluster lights up on the 9666343280, either permanently or intermittently. In addition, a fault message may appear in the instrument cluster, there may be no connection to the diagnostic tool, or a fault memory may occur that cannot be cleared.

In this condition, airbags and seatbelt pretensioners may fail to deploy in an emergency. A prompt check of the system is therefore advisable.

Which vehicles is the 9666343280 fitted in?

You can clarify the assignment using the list below. The 9666343280 is fitted in these vehicles: Peugeot 207 I (2006-2009) and I Facelift (2009-2015).

The vehicles for which we know this number are listed here:

• Peugeot 207 I (2006-2009)
• Peugeot 207 I Facelift (2009-2015)

Compare the part number on the label of the removed unit with this page; this lets you establish whether it is the right unit. Also have the fault memory read out before you remove anything. Only this result shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 285001745, 285010110, 285010112, 285010555, 96 668 439 80, 9661440680.

How does the repair of the 9666343280 work?

First have the fault memory read out on the 9666343280 and enclose the log. Then disconnect the battery and remove the control unit; after that, create a repair order online and send it in. Airbag24 generally needs 3–4 working days for checking, repairing and testing.

On the test bench, Airbag24 checks the unit, repairs defective components, erases stored crash data and carries out a function test. At the end you receive the 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 9666343280 get to Airbag24?

Either you send the 9666343280 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns the control unit to you by UPS.

Remember to put the printed repair order in the parcel, and pack the unit shockproof.