Airbag control unit with part number 89170-0E210

What does the airbag control unit 89170-0E210 do?

The airbag control unit 89170-0E210 is the central control unit of the restraint system (SRS) for Toyota. It evaluates crash sensors, decides within milliseconds in an accident which airbags and seatbelt pretensioners to trigger, and reports faults via the airbag warning light.

During operation it checks the entire system, that is, sensors, wiring and activation. Findings go into the fault memory as soon as a deviation occurs.

After an accident the unit stores crash data and locks itself.

Why does the control unit 89170-0E210 fail?

The most common cause is stored crash data that remains in the unit after an accident, even if no airbag has deployed; an ordinary diagnostic tool cannot erase it. Other causes are aged electronic components, cold solder joints, moisture on plug connections and voltage spikes.

The further causes include the following:

• aged electronic components
• cold solder joints
• moisture and corrosion on plug connections
• voltage spikes, for example from a weak battery or a jump start

Crash data stays in the memory until it is removed during the repair.

How can you tell that the 89170-0E210 is defective?

A defect shows itself through the airbag warning light, which stays on permanently or intermittently, and through fault messages in the instrument cluster. In addition, the diagnostic tool finds no connection to the control unit, or the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

Typical signs at a glance:

• Airbag warning light permanently on
• Fault message in the instrument cluster
• No connection between the diagnostic tool and the control unit
• Fault memory cannot be cleared

If you notice any of these signs, have the system checked promptly.

Which vehicles is the 89170-0E210 fitted in?

The control unit 89170-0E210 is fitted in these vehicles: Toyota Highlander XU70 (from 2019).

The overview below lists the vehicles to which this part number belongs.

• Toyota Highlander XU70 (from 2019)

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

For the same vehicles, we also repair control units with the part numbers 89170-0E690.

How does the repair of the 89170-0E210 work?

First have the fault memory read out and attach the log. Then disconnect the battery and only then remove the control unit. Then create a repair order online and send in the well-packed unit.

Airbag24 checks the unit on the test bench, repairs defective components, deletes stored crash data and carries out a function test. Processing at Airbag24 usually takes 3–4 working days. Afterwards your own unit 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 89170-0E210 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 by UPS.

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