Airbag control unit with part number 89170-12G11

What does the airbag control unit 89170-12G11 do?

The airbag control unit 89170-12G11 manages the restraint system (SRS) of Toyota. It processes the signals from the crash sensors, decides on the triggering of airbags and seatbelt pretensioners in an emergency, and monitors the system continuously.

The unit makes its decision within fractions of a second, because triggering is only effective if it happens in time. Outside an accident it constantly checks whether the components of the system are working correctly.

Detected faults are stored in memory and reported via the airbag warning light. After a crash it secures crash data and locks itself. Only the repair lifts this lock.

Why does the control unit 89170-12G11 fail?

Stored crash data after an accident is the most common cause, even if no airbag has deployed. Such data cannot be erased with a standard diagnostic tool. Other possible causes are aged components, moisture and voltage spikes.

Crash data remains in the unit after an accident, even if no airbag was triggered. The diagnostic tool cannot access it, so the fault can reappear at every later check.

The other causes affect the electronics themselves. Components age, solder joints can go cold, and moisture attacks plug connections. Voltage spikes from the vehicle's electrical system, for example with a weak battery, also put strain on the circuits.

How can you tell that the 89170-12G11 is defective?

The airbag warning light in the instrument cluster lights up permanently or switches on intermittently. A fault message may also appear in the instrument cluster, and the diagnostic tool may not find the control unit.

In addition, the fault memory shows that a fault cannot reset itself. Together these are a clear reason to have the system checked.

In an emergency, airbags and seatbelt pretensioners may then fail to trigger. Please arrange a check straight away.

Which vehicles is the 89170-12G11 fitted in?

The control unit 89170-12G11 is listed for these vehicles: Toyota Corolla E170 (2013-2018).

This unit is on record for the following models:

• Toyota Corolla E170 (2013-2018)

First, compare the part number on the label of the removed unit with this page. This only tells you that you have the right unit. Second, have the fault memory read out beforehand, because the log shows whether the control unit is defective or whether a plug or a cable is the cause.

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 89170-12G11 work?

Processing at Airbag24 usually takes 3–4 working days. This time applies only to testing, repairing and function testing in-house.

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

Airbag24 tests the unit on the test bench, repairs defective components, erases the crash data and runs a function test. Your own unit then goes back 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 89170-12G11 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.

Put the printed repair order into the parcel and pack the unit shock-proof.