Airbag control unit with part number 89170-0DE70

What does the airbag control unit 89170-0DE70 do?

The airbag control unit 89170-0DE70 controls the SRS restraint system in Toyota vehicles. It processes the crash sensor signals, calculates within milliseconds whether airbags and seatbelt pretensioners are triggered in an emergency, and continuously monitors the components. It reports faults via the airbag warning light.

In operation the electronics stay unobtrusively active. They check connections and triggering elements without you noticing anything.

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

Why does the control unit 89170-0DE70 fail?

Crash data that remain in the 89170-0DE70 after an accident are the most common cause, even when no airbag has deployed. A standard diagnostic tool does not erase them. Other causes include aged components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

Crash data cannot be removed with common tools. Erasing them is therefore part of the repair at Airbag24.

Electronics age, solder joints can be cold, and moisture attacks contacts. Voltage spikes from a weak battery or from a jump start place additional strain on the circuit.

How can you tell that the 89170-0DE70 is defective?

Signs of a fault on the 89170-0DE70 are the airbag warning light, fault messages, or a control unit that cannot be reached. In that case airbags and seatbelt pretensioners may fail to deploy in an emergency.

• The airbag warning light stays on permanently.
• The warning light only comes on intermittently.
• The instrument cluster shows a fault message for the airbag system.
• The diagnostic tool cannot find the control unit.
• A fault memory cannot be cleared.

If any of these messages appear, a prompt check is advisable.

Which vehicles is the 89170-0DE70 fitted in?

The control unit 89170-0DE70 is fitted in these vehicles: Toyota Yaris XP210 (from 2020).

The vehicles for which the unit is intended:

• Toyota Yaris XP210 (from 2020)

Comparing the part number on the unit with this page is sensible, to make sure you have the right unit. You should then have the fault memory read out. Only this log shows whether the control unit itself 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 89170-0D730, 89170-0DE60, 89170-0DF50, 89170-52350, 89170-K0060.

How does the repair of the 89170-0DE70 work?

You have the fault memory read out and enclose the log. Then you disconnect the battery, remove the 89170-0DE70 and create a repair order online. Finally you send in the well-packed unit.

The sequence protects you during removal and is therefore fixed.

Airbag24 checks the control unit on the test bench, repairs defective components where necessary, erases the stored crash data and carries out a function test. At Airbag24, testing, repairing and checking usually takes 3–4 working days. Afterwards your unit is returned 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 89170-0DE70 get to Airbag24?

You can send your 89170-0DE70 as a parcel, or have it collected by UPS for an additional charge. Airbag24 returns it by UPS after the repair.

The printed repair order belongs in the parcel. Please pack the control unit shock-proof.