Airbag control unit with part number 8200435342

What does the airbag control unit 8200435342 do?

The airbag control unit 8200435342 is the switching centre of the restraint system for Renault. It constantly checks the messages from the crash sensors, decides in a crash within fractions of a second which airbags and seatbelt pretensioners are triggered, and monitors the system in the background.

If it detects a fault, it indicates it via the airbag warning light. After an accident, it creates crash data and locks itself.

Why does the control unit 8200435342 fail?

The most common cause is the storage of crash data after an accident, even if no airbag has triggered; a standard diagnostic tool cannot erase this data. Ageing electronics, cold solder joints, moisture and corrosion on plugs, and voltage spikes are also possible causes.

That no airbag has fired is irrelevant to the storage.

The other causes include ageing of components. Solder joints can go cold, moisture and rust affect plug connections, and voltage spikes from a weak battery or a jump start can be hard on the electronics.

How can you tell that the 8200435342 is defective?

The airbag warning light in the instrument cluster lights up constantly or intermittently, and an error message appears in addition. The diagnostic tool does not reach the control unit, and the fault memory cannot be cleared. During this fault, airbags and seatbelt pretensioners may not trigger in an emergency.

The light is a clear message from the control unit and not a random finding.

An error message alone does not reveal the cause. Only reading out the fault memory provides clarity.

Which vehicles is the 8200435342 fitted in?

Vehicles in which the control unit 8200435342 is fitted are: Renault Trafic II (2001-2014). The decisive factor for installation is the part number on the unit itself.

Here you can see the vehicles to which the assignment belongs:

• Renault Trafic II (2001-2014)

Have the fault memory read out before you remove the unit; only this result shows whether the control unit is defective or a plug or cable is the cause. Afterwards compare the part number on the label with this page, which only confirms that it is the right unit.

For the same vehicles, we also repair control units with the part numbers 608361600E, 7701071459, 8200177654, 8200402592, 8200435339, 8200676895E.

How does the repair of the 8200435342 work?

You first have the fault memory read out and enclose the log. Then disconnect the battery, only then remove the control unit, and afterwards create a repair order online; send the unit well packed. Airbag24 checks it on the test bench, repairs defective components, deletes the stored crash data and carries out a function test.

The sequence is important for safety. Processing at Airbag24 usually takes 3–4 working days, and this time covers only checking, repairing and testing.

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 8200435342 get to Airbag24?

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

Make sure the packaging is shockproof and enclose the printed repair order.