Airbag control unit with part number 8200380048

What does the airbag control unit 8200380048 do?

The airbag control unit 8200380048 is the central control unit of the restraint system (SRS) for Renault. It continuously checks the signals from the crash sensors and decides in an accident, within milliseconds, which airbags and seatbelt pretensioners are triggered.

The control unit reports faults in the system via the airbag warning light in the instrument cluster. In this way, it permanently monitors whether all the components involved are working.

After an accident, it stores crash data and locks itself.

Why does the control unit 8200380048 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a standard diagnostic tool cannot erase it. Other causes include aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data remains in memory after an accident, even if no airbag has deployed, and cannot be erased with a common diagnostic tool. That is why this point comes first in fault diagnosis.

Other possible causes come into consideration:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump start

How can you tell that the 8200380048 is defective?

A defect shows as an airbag warning light that stays on permanently or intermittently, an error message in the instrument cluster, a lack of connection between the diagnostic tool and the control unit, or a fault memory that cannot be cleared. In that case, airbags and seatbelt pretensioners may possibly not deploy in an emergency.

These signs are:

• Airbag warning light on permanently or intermittently
• Error message in the instrument cluster
• Diagnostic tool receives no connection to the control unit
• Fault memory cannot be cleared

The warning light indicates the defect as soon as the system detects it. Please follow up on a lit indicator promptly.

Which vehicles is the 8200380048 fitted in?

The 8200380048 is fitted in these vehicles: Renault Mégane II (2002-2009).

This overview shows the vehicles recorded for this part number.

• Renault Mégane II (2002-2009)

First compare the part number on the label of the removed unit with this page; this only confirms that it is the correct unit. Also have the fault memory read out beforehand, because only this result shows whether the control unit is defective or whether a connector 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 8200380048 work?

First have the fault memory read out and attach the log, then disconnect the battery and only then remove the control unit. Then create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days for checking, repair and function test.

This sequence is mandatory for safety reasons.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test.

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 8200380048 get to Airbag24?

You send the control unit 8200380048 in as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

Enclose the printed repair order and pack the unit in a shock-proof box.