Airbag control unit with part number 285550990R

What does the airbag control unit 285550990R do?

The airbag control unit 285550990R controls the restraint system (SRS) in the Renault. It evaluates the crash sensors, decides within milliseconds in a crash whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously. It shows faults via the airbag warning light.

After an accident the unit stores crash data and locks itself. In everyday use, monitoring carries on in the background.

Why does the control unit 285550990R fail?

The most common cause is stored crash data, even without a deployed airbag; a normal diagnostic tool cannot erase it. Other causes are aged components, cold solder joints, moisture, corrosion and voltage spikes.

• Aged electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example from jump-starting

Airbag24 erases the crash data during the repair. Which cause applies in the individual case is only determined by the test.

How can you tell that the 285550990R is defective?

A defect shows up as an airbag warning light in the instrument cluster that stays on permanently or intermittently, and as a fault message in the instrument cluster. In addition, the diagnostic tool fails to establish a connection to the control unit, and the fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then fail to deploy. Have the system checked promptly while the warning light is on, rather than continuing to drive as if everything were fine.

Which vehicles is the 285550990R fitted in?

The control unit 285550990R is fitted in these vehicles: Renault Kangoo III (from 2021).

The overview shows the assignment to this part number.

• Renault Kangoo III (from 2021)

Compare the part number on the label of the removed unit with this page; that only confirms that it is the right unit. Also have the fault memory read out beforehand, because only this result shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 0 285 021 150, 285A41756R.

How does the repair of the 285550990R work?

The processing at Airbag24 usually takes 3–4 working days. Before that, have the fault memory read out, attach the log, disconnect the battery and remove the control unit.

Afterwards, create a repair order online and send the unit in well packed. Airbag24 tests the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test.

Afterwards your own unit is 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 285550990R get to Airbag24?

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

Place the printed repair order in the parcel and pack the unit shock-proof.