Airbag control unit with part number 89170-48341

What does the airbag control unit 89170-48341 do?

The 89170-48341 controls the SRS restraint system in Toyota. The crash sensors continuously report their measured values to the unit, and in an accident it triggers the matching airbags and seatbelt pretensioners within milliseconds. Faults appear on the airbag warning light. After an accident the unit stores crash data and locks itself.

The system checks its components all the time. If something falls outside the normal range, the control unit creates an entry in the fault memory, which the workshop reads later.

The lock after an accident is part of the basic design of the unit, and Airbag24 lifts it through the repair.

Why does the control unit 89170-48341 fail?

Most often the cause is crash data stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot access this data and therefore cannot remove it.

Airbag24 deletes the stored crash data as part of the repair, so this point is taken care of on your unit.

Other causes are aged electronic components, cold solder joints, and moisture and corrosion at plug connections. Voltage spikes, such as those from a weak battery or a jump start, can also overload the unit.

How can you tell that the 89170-48341 is defective?

A defect can show on the airbag warning light in the instrument cluster, which stays on permanently or intermittently. A fault message, a missing connection to the diagnostic tool or a fault memory that cannot be cleared are also signs. In this condition the airbags and seatbelt pretensioners may not deploy in an emergency.

• Airbag warning light stays on permanently or flickers intermittently
• Fault message in the instrument cluster
• Diagnostic tool does not find the control unit
• Fault memory cannot be cleared

The symptoms alone prove nothing, because cables and plugs can cause the same symptoms. A test provides clarity.

Which vehicles is the 89170-48341 fitted in?

The 89170-48341 is fitted in these vehicles: Toyota Highlander XU40 (2007-2013).

The overview shows which vehicles Airbag24 assigns to this unit.

• Toyota Highlander XU40 (2007-2013)

Read out the fault memory before removal. Only then will it show whether the control unit is actually defective or whether a plug or a cable is the cause. Afterwards compare the part number on the label with the number you have read off.

For the same vehicles, we also repair control units with the part numbers 89170-48090, 89170-48240.

How does the repair of the 89170-48341 work?

First you read out the fault memory and enclose the log, then you disconnect the battery and remove the control unit. After that you create a repair order online. Airbag24 generally needs 3–4 working days for checking, repairing and testing.

Pack the unit carefully before you send it. A well-padded box prevents damage in transit.

Airbag24 checks the unit, repairs defective components, deletes stored crash data and carries out a function test. The 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 89170-48341 get to Airbag24?

Either you send the 89170-48341 yourself as a parcel, or you arrange a UPS collection for an extra charge. After the repair UPS brings the unit back to you.

Include the printed repair order in the parcel, and the unit must be packed shock-proof.