Airbag control unit with part number 8200435005

What does the airbag control unit 8200435005 do?

The airbag control unit 8200435005 controls the restraint system in the Renault vehicle. From the data of the crash sensors it calculates in an accident, within fractions of a second, which airbags and seatbelt pretensioners are triggered. After an accident it stores crash data and locks itself.

It also monitors the entire circuit of the safety device and shows faults via the airbag warning light.

The display in the instrument cluster is therefore the most important indication of the system's condition.

Why does the control unit 8200435005 fail?

The most common cause is stored crash data after an accident, even if no airbag was triggered; a normal diagnostic tool cannot erase it. Other causes include aged electronic components, cold solder joints, moisture and corrosion on connectors, and voltage spikes.

The crash data is created in the control unit as soon as it registers an accident. Whether airbags trigger afterwards or not makes no difference to it.

The other causes lie in the electronics and their environment. Components age, solder joints come loose over time, and moisture attacks contacts. Voltage spikes arise, for example, when starting with jump leads.

How can you tell that the 8200435005 is defective?

A defect makes itself known through the airbag warning light, which stays on permanently or intermittently, through an error message in the instrument cluster, and through a diagnostic tool that cannot reach the control unit. In an emergency, airbags and seatbelt pretensioners may therefore fail to trigger.

You can see the light while driving, without any tools. It is therefore the first sign you will notice.

A fault memory that cannot be cleared also points to a fault that you should have checked.

Which vehicles is the 8200435005 fitted in?

The control unit 8200435005 is fitted in this vehicle type: Renault Espace IV (2002-2014).

The overview sorts the vehicles by model so that you can match them quickly.

• Renault Espace IV (2002-2014)

You should compare the part number with the label before removal. It only shows that the unit is the correct one. Which cause is present is shown only by the fault memory read out.

For the same vehicles, we also repair control units with the part numbers 603785400, 603785500, 605487700, 8200313338, 8200343319, 8200343319A.

How does the repair of the 8200435005 work?

You have the fault memory read out and add the log to the package. Then disconnect the battery and remove the control unit. Next create a repair order online and pack the unit well before sending it in.

Airbag24 examines the unit on the test bench, replaces defective components, removes stored crash data and carries out a function test. Processing usually takes 3–4 working days.

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 8200435005 get to Airbag24?

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

Pack the printed repair order into the package and pack the unit in shock-resistant packaging.