Airbag control unit with part number 89170-12690

What does the airbag control unit 89170-12690 do?

In Toyota vehicles, the airbag control unit 89170-12690 evaluates the crash sensors. In a crash, it determines within milliseconds which airbags and seatbelt pretensioners fire, and it monitors the system without interruption.

If the unit detects a fault, it reports this via the airbag warning light in the instrument cluster. The monitoring continues in the background.

After an accident, the unit stores crash data and remains locked afterwards.

Why does the control unit 89170-12690 fail?

The most common cause is crash data from an accident that remains in the unit, even without a triggered airbag; an ordinary diagnostic tool does not make it disappear. Other possible causes are ageing electronics, cold solder joints, moisture and corrosion on plugs, and voltage spikes.

The recording of the impact is held in the control unit and is only removed during a repair. It is therefore not a sign of permanent damage, but a stored event.

Electronic components age, and solder joints can turn cold or lose contact. Moisture and corrosion attack the plug connections.

Voltage spikes load the electronics, for example when the battery is weak or jump leads are connected.

How can you tell that the 89170-12690 is defective?

Typical signs are an airbag warning light that stays on permanently or intermittently, a fault message in the instrument cluster, a diagnostic tool without connection, and a fault memory that cannot be cleared. In an emergency, the airbags and seatbelt pretensioners may then fail to trigger.

• warning light in the instrument cluster stays on permanently or intermittently
• fault message in the instrument cluster
• diagnostic tool does not connect to the control unit
• fault memory cannot be cleared

If you notice these signs, a check is the next sensible step.

Which vehicles is the 89170-12690 fitted in?

The 89170-12690 is fitted in these vehicles: Toyota Corolla E170 (2013-2018).

These models are on record for this part number and appear in the overview below:

• Toyota Corolla E170 (2013-2018)

Comparing the part number on the label of the removed unit with this page only shows that it is the right unit. Whether the control unit is defective or a plug or cable is behind the fault is determined only by the fault memory, which you have read out beforehand.

For the same vehicles, we also repair control units with the part numbers 89170-02C70, 89170-12180, 89170-12G10, 89170-12N50.

How does the repair of the 89170-12690 work?

First read out the fault memory and enclose the log, then disconnect the battery. Only then remove the control unit, create a repair order online and send the unit in well packed.

At Airbag24, the unit is first examined on the test bench. Defective components are replaced, stored crash data is erased and a functional test is carried out before your own unit is returned. For all of this, allow 3–4 working days as a rule.

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 89170-12690 get to Airbag24?

Either you send the control unit as a parcel, or you arrange a UPS collection for an extra charge. UPS handles the return to you after the repair on behalf of Airbag24.

Include the printed repair order with the parcel; the unit must be packed shock-proof.