Airbag control unit with part number 8200381671

What does the airbag control unit 8200381671 do?

The airbag control unit 8200381671 is the heart of the restraint system (SRS) for Renault. It processes the signals from the crash sensors, selects the right airbags and seatbelt pretensioners within milliseconds in a crash, and monitors the system constantly. After a crash it stores crash data and locks itself.

During operation the unit checks its sensors, wiring and output stages. It registers every deviation and stores it for later evaluation.

Without this ongoing check, the system would not reliably know which restraint devices it may trigger in an emergency. The airbag warning light makes faults visible to the driver.

Why does the control unit 8200381671 fail?

The most frequent cause is crash data stored after a crash, even if no airbag deployed; a normal diagnostic tool cannot delete it. Airbag24 deletes it during the repair. Other causes include aged components, cold solder joints, moisture and corrosion, and voltage spikes.

The other causes at a glance:

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

Which of these causes applies in an individual case is shown on the test bench.

How can you tell that the 8200381671 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and an error message appears. The diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

Typical signs at a glance:

• the airbag warning light, permanently or intermittently on,
• an error message in the instrument cluster,
• no connection of the diagnostic tool to the control unit,
• a fault memory that cannot be emptied.

With such signs, a check without delay is advisable.

Which vehicles is the 8200381671 fitted in?

Whether your vehicle belongs to this overview can be determined quickly. The 8200381671 is fitted at Renault in these vehicles: Renault Master II (1997-2010).

The following list names the vehicles in which the control unit has been recorded so far:

• Renault Master II (1997-2010)

Compare the part number on the label of the removed unit with this page, and you know it is the correct unit. This comparison does not provide any information about a defect. Therefore have the fault memory read out, because only that shows whether the control unit itself is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 605045200, 8200098404, 8200381668, 8201001327.

How does the repair of the 8200381671 work?

First have the fault memory read out and the log attached, then disconnect the battery and remove the control unit. Next, create the repair order online and send the unit well packed. Processing at Airbag24 usually takes 3–4 working days.

At Airbag24 the unit is checked on the test bench, defective components are repaired, the stored crash data is deleted and a function test is carried out. The stated 3–4 working days cover only this work.

Afterwards your own unit goes back 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 8200381671 get to Airbag24?

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

Put the printed repair order in the parcel and pack the unit shock-proof so it arrives undamaged.