Airbag control unit with part number 7700569000

What does the airbag control unit 7700569000 do?

The airbag control unit 7700569000 is the central control unit of the SRS restraint system in Renault vehicles. In an accident it decides within milliseconds which airbags and seatbelt pretensioners are triggered, and it monitors the system continuously.

The crash sensors deliver their measured values to the unit, which evaluates them continuously. It keeps an eye on the state of the system even when no accident occurs.

It indicates faults via the airbag warning light. After a crash, it stores crash data and locks itself.

Why does the control unit 7700569000 fail?

Crash data stored after an accident are the most common cause, even without an airbag having triggered. An ordinary diagnostic tool cannot remove them. Other causes include aged components, cold solder joints, moisture and voltage spikes.

Aged electronic components lose reliability over time. Cold solder joints can lead to sporadic faults.

Moisture and corrosion at connectors worsen the contact. Voltage spikes, for example with a weak battery or jump-starting, additionally stress the electronics.

How can you tell that the 7700569000 is defective?

A defect is first indicated by the airbag warning light, when it stays on constantly or only intermittently. Fault messages in the instrument cluster and a missing connection to the diagnostic tool are added. In an emergency, airbags and seatbelt pretensioners may then not trigger.

Typical signs at a glance:

• Airbag warning light constantly on
• Airbag warning light intermittently on
• Fault message in the instrument cluster
• Diagnostic tool does not reach the control unit
• Fault memory cannot be cleared

If any of these signs occur, have the fault memory read out and note the messages.

Which vehicles is the 7700569000 fitted in?

The control unit 7700569000 is fitted in these vehicles: Renault Scénic I (1996-2003). The information follows this part number.

The assignment looks like this:

• Renault Scénic I (1996-2003)

First compare the part number on the label with this page. This only confirms that it is the right unit. Also have the fault memory read out beforehand; its contents show whether the control unit is defective or a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 600639500, 7700415232, 8200117651, 8200117652, 8200402397.

How does the repair of the 7700569000 work?

Before you remove the control unit, have the fault memory read out, enclose the log and disconnect the battery. Then create a repair order online and send the well-packed unit. For inspection, repair and testing at Airbag24 we usually allow 3–4 working days.

Airbag24 inspects the unit on the test bench and repairs defective components. Stored crash data are erased by Airbag24 before the functional test starts.

Afterwards you receive your own unit back.

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 7700569000 get to Airbag24?

You send the unit as a parcel, or you book a UPS collection for an extra charge. Airbag24 sends it back via UPS after the repair.

The printed repair order belongs in the parcel, and the control unit must be packed shock-resistant.