Airbag control unit with part number 8200054938

What does the airbag control unit 8200054938 do?

The airbag control unit 8200054938 controls the restraint system (SRS) for Renault. It processes the signals from the crash sensors and, in an emergency, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

It monitors the entire system continuously. If it discovers a fault, the airbag warning light in the instrument cluster lights up.

After an accident it stores crash data and locks itself. The lock is lifted only by the repair.

Why does the control unit 8200054938 fail?

Stored crash data from an accident is the most common cause for the 8200054938, even without a triggered airbag. A normal diagnostic tool cannot erase it. Other causes are aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

That no airbag triggered does not mean nothing was stored. Airbag24 erases the data during the repair.

Furthermore, aged electronic components, cold solder joints, and moisture and corrosion at plug connections contribute to the failure. Voltage spikes, for example from a weak battery or jump starting, additionally stress the electronics.

How can you tell that the 8200054938 is defective?

A defect on the 8200054938 is indicated by the airbag warning light, which stays on constantly or intermittently in the instrument cluster. Error messages in the instrument cluster, a diagnostic tool without connection to the control unit, or a fault memory that cannot be erased confirm the suspicion. In that case airbags and seatbelt pretensioners may not trigger in an emergency.

The warning light calls for clarification. Anyone who sees it should have the system read out promptly.

Which vehicles is the 8200054938 fitted in?

The 8200054938 is fitted in these vehicles: Renault Twingo II (2007-2014).

The list shows the vehicles to which this part number is assigned:

• Renault Twingo II (2007-2014)

Matching the number on the label with this page ensures that you have the right unit. Also have the fault memory read out. Only this result shows whether the control unit is defective or whether a plug or a cable is responsible.

For the same vehicles, we also repair control units with the part numbers 7700423313A, 8200 491 652, 8200018835A, 8200111668, 8200491655, 8200896811.

How does the repair of the 8200054938 work?

Checking, repairing and testing the 8200054938 at Airbag24 takes 3–4 working days as a rule. This time covers only the work on the unit itself.

First have the fault memory read out and attach the log. Then disconnect the battery and only afterwards remove the control unit. Online you create the repair order, then pack the unit and send it in.

Airbag24 checks the unit on the test bench, replaces defective components, erases the stored crash data and carries out a function test. Your unit comes back to you afterwards.

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 8200054938 get to Airbag24?

You send the control unit 8200054938 as a parcel or book a UPS collection for an extra charge. After the repair it comes back to you by UPS.

Pack the unit shock-proof and enclose the printed repair order.