Airbag control unit with part number 89170-0E211

What does the airbag control unit 89170-0E211 do?

As an SRS control unit, the airbag control unit 89170-0E211 controls the airbags and seatbelt pretensioners of Toyota. In the event of a crash, it calculates within milliseconds from the crash sensor signals which restraint devices deploy, and continuously checks the entire system.

It indicates a detected fault via the airbag warning light. After an accident, the unit stores crash data and locks itself.

Why does the control unit 89170-0E211 fail?

The most common cause is crash data from an accident, even if no airbag has triggered, and a normal diagnostic tool cannot delete it. Other causes are ageing, cold solder joints, moisture and voltage spikes.

The other causes in detail:

• Ageing of the electronic components, which declines over the years
• Cold solder joints on the circuit boards
• Moisture and corrosion on plug connections
• Voltage spikes, for example from a weak battery or a jump start

How can you tell that the 89170-0E211 is defective?

A defect shows itself through an airbag warning light that is lit permanently or intermittently, an error message in the instrument cluster, a missing connection between the diagnostic tool and the control unit, or a fault memory that cannot be cleared. In these cases, airbags and seatbelt pretensioners may not trigger in an emergency.

The light signals a fault that the control unit itself has detected, and it must therefore not be ignored.

Whether a fault lies only in the control unit or in the wiring can hardly be told without reading out the fault memory.

Which vehicles is the 89170-0E211 fitted in?

The control unit 89170-0E211 is fitted in these vehicles: Toyota Highlander XU70 (from 2019). The assignment is determined solely by the part number.

The list contains the vehicles to which this part number is assigned:

• Toyota Highlander XU70 (from 2019)

Compare the part number on the label of the removed unit with this page. This only confirms that it is the right unit. Have the fault memory read out before removal: only this result shows whether the control unit is defective or 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 89170-0E211 work?

First have the fault memory read out and enclose the log with the unit, then disconnect the battery and remove the control unit; afterwards create a repair order online and send the well-packed unit. At Airbag24, the test bench checks it, defective components are repaired, the crash data is deleted and a function test is carried out; this usually takes 3–4 working days.

The sequence for battery and removal is mandatory because it serves safety.

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 89170-0E211 get to Airbag24?

The control unit goes to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair, UPS brings your own unit back to you.

Put the printed repair order into the parcel, and the control unit must be packed shockproof.