Airbag control unit with part number 8200435346

What does the airbag control unit 8200435346 do?

The airbag control unit 8200435346 forms the central control of the restraint system (SRS) for Renault. It evaluates the signals from the crash sensors, decides within milliseconds in an impact which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. It reports faults via the airbag warning light.

After an accident, the unit stores crash data and locks itself. Only the repair lifts this lock.

Why does the control unit 8200435346 fail?

The most common cause is crash data stored after an accident, even without an airbag deployment; an ordinary diagnostic tool cannot remove it. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, such as from a weak battery or a jump start.

The crash data stays stored until it is erased. During the repair, Airbag24 removes it.

Electronics age over time, and solder joints can give way with time. Damp plug contacts and corrosion create transition resistances that distort the signals.

How can you tell that the 8200435346 is defective?

A fault shows up as an airbag warning light in the instrument cluster that stays on or flickers, as an error message in the display, as a diagnostic tool without connection to the control unit, or as a fault memory that cannot be cleared. In that case, airbags and seatbelt pretensioners may not deploy in a real crash.

The signs in detail:

• The airbag warning light stays on or flickers.
• An error message appears in the instrument cluster.
• The diagnostic tool finds no connection to the control unit.
• The fault memory cannot be cleared.

The light indicates the fault, so have the system checked promptly.

Which vehicles is the 8200435346 fitted in?

The 8200435346 is fitted in these vehicles: Renault Trafic II (2001-2014).

The vehicles at a glance:

• Renault Trafic II (2001-2014)

Two steps help before removal. Comparing the part number on the label of the removed unit with this page only confirms that it is the correct 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 the cause.

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 8200435346 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only afterwards remove the control unit. Online, you create the repair order and send in the well-packed unit. Airbag24 generally needs 3–4 working days for the check, repair and test.

At Airbag24, the unit is first checked on the test bench, and defective components are replaced. Airbag24 erases the crash data, and a function test completes the work. Your own unit is then 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 8200435346 get to Airbag24?

Shipping runs in two directions: you send the unit in as a parcel, or book a UPS collection for an extra charge. UPS handles the return journey as soon as the repair is complete.

Put the printed repair order into the parcel and pack the unit shock-proof.