Airbag control unit with part number 89170-02P10

What does the airbag control unit 89170-02P10 do?

The airbag control unit 89170-02P10 controls the restraint system (SRS) at Toyota. It evaluates the crash sensors, determines in an accident within a fraction of a second which airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

The unit responds to faults with an entry in the fault memory. Its status is shown via the airbag warning light in the instrument cluster.

An accident causes crash data to be stored, and the unit locks itself.

Why does the control unit 89170-02P10 fail?

Stored crash data after an accident is the most common cause with the 89170-02P10, even if no airbag was triggered. Aged electronic components, moisture and corrosion on plug connections, and voltage spikes are also possible triggers.

Crash data cannot be deleted with a normal diagnostic tool, which is why it is a natural starting point for every diagnosis.

The other triggers affect the electronics themselves, their contacts or the vehicle electrical system. Cold solder joints, wet plugs and a weak battery with voltage spikes belong to them.

How can you tell that the 89170-02P10 is defective?

A defect on the 89170-02P10 shows up as the airbag warning light, as messages in the instrument cluster and as a diagnostic tool without connection. In addition, the fault memory cannot be cleared.

• Airbag warning light lit continuously or intermittently
• Error message in the instrument cluster
• No connection between the diagnostic tool and the control unit
• Fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may then not be able to trigger.

The light shows that there is a defect and must not be ignored. It does not, however, reveal where the fault comes from.

Which vehicles is the 89170-02P10 fitted in?

The 89170-02P10 is fitted in these vehicles: Toyota Corolla E210 (2018-2022) and E210 Facelift (from 2022).

The vehicles for this part number are listed in the overview below.

• Toyota Corolla E210 (2018-2022)
• Toyota Corolla E210 Facelift (from 2022)

Compare the part number on the label of the removed unit with this page. This only ensures that you have the right unit. Regardless of this, have the fault memory read out, because only this log shows whether the control unit is defective.

For the same vehicles, we also repair control units with the part numbers 89170-02N50, 89170-02T10, 89170-02W80, 89170-0F150.

How does the repair of the 89170-02P10 work?

The fault memory is read out first, and you enclose the log. This is followed by disconnecting the battery and removing the control unit 89170-02P10. Only then do you create the repair order online and send in the packed unit.

At Airbag24, the unit is first checked on the test bench. Defective components are repaired, the crash data is deleted and a function test is carried out. Afterwards, your own unit is returned to you.

Processing at Airbag24 usually takes 3–4 working days, and that applies only to checking, repairing and testing.

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 89170-02P10 get to Airbag24?

You can send the control unit 89170-02P10 as a parcel or book a UPS collection for an extra charge. After repair, UPS brings the unit from Airbag24 back to you.

Pack the unit shockproof and enclose the printed repair order.