Airbag control unit with part number 8200307802

What does the airbag control unit 8200307802 do?

The airbag control unit 8200307802 is the central control of the airbag system of Renault. It constantly checks the crash sensors and, in an accident, selects within a very short time which airbags and seatbelt pretensioners are triggered.

If a fault occurs, the unit issues a message via the airbag warning light so that you can recognise the malfunction. Monitoring runs without interruption throughout.

After an accident, the unit stores crash data and remains in a locked state.

Why does the control unit 8200307802 fail?

Stored crash data is the most common cause, even in an accident where no airbag deployed. It cannot be erased with an ordinary diagnostic tool. Other possible causes are aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

Crash data stays in the memory until it is specifically removed. The other causes develop gradually, because components age and solder joints become brittle over time.

Excessive voltage, for example when a jump-start is connected or when a battery is weakening, puts strain on the electronics.

How can you tell that the 8200307802 is defective?

A defect becomes visible in several places: the airbag warning light in the instrument cluster lights up permanently or intermittently, a fault message appears, the diagnostic tool cannot find the control unit, and the fault memory cannot be cleared. In that case the airbags and seatbelt pretensioners may fail to deploy in an emergency.

These signs suggest that the control unit itself may be affected, but only fault diagnosis shows what the cause is.

The warning light and the fault messages are therefore a reason to have the system checked promptly.

Which vehicles is the 8200307802 fitted in?

The airbag control unit 8200307802 is fitted in these vehicles: Renault Mégane II (2002-2009). The most reliable way to check whether your own car is included is with the label on the removed unit and the read-out fault memory.

The list shows the vehicles recorded for this part number:

• Renault Mégane II (2002-2009)

Comparing the part number on the label with this page ensures that you have the right unit in front of you. Whether it is defective only becomes clear when the fault memory is read out, because then it shows whether the control unit itself or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 8200257044E, 8200337245, 8200337247, 8200412026, 8200412026B, 8200682381.

How does the repair of the 8200307802 work?

First have the fault memory read out and attach the log. Then disconnect the battery, and only after that remove the control unit, create a repair order online and send the unit in well packed. Airbag24 needs 3–4 working days as a rule for the check, repair and function test.

Airbag24 examines the unit on the test bench, repairs defective components, removes the stored crash data and carries out a function test. At the end, your own unit is returned 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 8200307802 get to Airbag24?

You send the unit to Airbag24 as a parcel, or you book a UPS collection for an extra charge. The return after the repair is made by UPS.

Pack the printed repair order into the parcel, and wrap the unit in shockproof padding.