Airbag control unit with part number 89170-0R470

What does the airbag control unit 89170-0R470 do?

The airbag control unit 89170-0R470 is the central control unit of the restraint system (SRS) for Toyota. It evaluates the crash sensors and, in an emergency, decides within milliseconds which airbags and seatbelt pretensioners are triggered.

While driving, the unit checks the components of the system. It stores any faults it finds and shows them via the airbag warning light in the instrument cluster.

After an accident, it stores crash data and locks itself. The lock is only lifted by the repair.

Why does the control unit 89170-0R470 fail?

The most common cause is stored crash data after an accident, even if no airbag has deployed. Other causes, in brief:

• ageing electronic components
• cold solder joints
• moisture and corrosion at plug connectors
• voltage spikes, for example from a weak battery or after a jump start

Crash data cannot be removed with a normal diagnostic tool. Airbag24 erases it during the repair.

How can you tell that the 89170-0R470 is defective?

A defect shows up as the airbag warning light in the instrument cluster staying on permanently or intermittently, a fault message in the instrument cluster, a diagnostic tool without a connection to the control unit, and a fault memory that cannot be cleared.

The warning light is the most important alert in the system. When it comes on, have the system checked promptly, even if the vehicle continues to run normally.

In an emergency, airbags and seatbelt pretensioners may fail to deploy. Every warning of this kind should therefore be taken seriously.

Which vehicles is the 89170-0R470 fitted in?

The 89170-0R470 is fitted in these vehicles: Toyota RAV4 XA50 (from 2018).

The following overview lists the vehicles assigned to this part number.

• Toyota RAV4 XA50 (from 2018)

Two steps give you certainty. Comparing the part number on the label of the removed unit with this page confirms that it is the correct unit. The fault memory then shows whether the control unit is defective or whether a plug or cable is the cause, so have it read out beforehand.

For the same vehicles, we also repair control units with the part numbers 150800-4431, 152100-0262, 152100-4560, 89170-42400, 89170-42870, 89170-42A60.

How does the repair of the 89170-0R470 work?

First have the fault memory read out and enclose the log. Then disconnect the battery, remove the control unit and create a repair order online. Testing, repair and the function test at Airbag24 usually take 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components and erases stored crash data. A function test follows, and then your own unit goes back to you.

The sequence serves safety: the battery is always disconnected before the control unit is removed.

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 89170-0R470 get to Airbag24?

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

Place the printed repair order in the parcel and pack the control unit shock-resistant so that it reaches Airbag24 undamaged.