Airbag control unit with part number 89170-06420

What does the airbag control unit 89170-06420 do?

The airbag control unit 89170-06420 controls the restraint system (SRS) in vehicles from Toyota. It evaluates the signals from the crash sensors and decides within milliseconds in a crash which airbags and seatbelt pretensioners are triggered. It also monitors the entire system continuously and displays faults via the airbag warning light.

After a crash, the unit stores crash data and locks itself. The control unit works closely with sensors, wiring and actuators, so a fault in the unit can have an immediate effect on the entire system.

Why does the control unit 89170-06420 fail?

Stored crash data is the most common cause with 89170-06420, even if no airbag has deployed. Other causes are aged electronic components, faulty solder joints, moisture or corrosion at plug connections and voltage spikes, for example from a weak battery or a jump start.

Crash data cannot be erased with a standard diagnostic tool. Airbag24 erases it during the repair, before the unit is tested and checked.

The other causes develop gradually, because components age and contacts corrode, while voltage spikes act suddenly.

How can you tell that the 89170-06420 is defective?

A fault in the 89170-06420 shows up as the airbag warning light in the instrument cluster, which lights up permanently or intermittently. Added to this are a fault message in the instrument cluster, a diagnostic tool without a connection to the control unit and a fault memory that cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then fail to deploy. A timely check is therefore worthwhile as soon as the light comes on or a message appears.

• Airbag warning light lights up permanently
• Airbag warning light lights up only intermittently
• Fault message in the instrument cluster
• Diagnostic tool gets no connection to the control unit
• Fault memory cannot be cleared

Which vehicles is the 89170-06420 fitted in?

The 89170-06420 is fitted in these vehicles: Toyota Camry XV50 (2011-2019).

This overview lists the vehicles to which the part number is assigned:

• Toyota Camry XV50 (2011-2019)

Compare the part number on the label of the removed unit with this page. This only ensures that you have the right unit in front of you. Whether the control unit is actually defective or a plug or cable is causing the problem is shown only by the fault memory read out, so have it read out beforehand.

For the same vehicles, we also repair control units with the part numbers 150800-2310, 89170-06670, 89170-06671, 89170-06770.

How does the repair of the 89170-06420 work?

With the 89170-06420, first have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit. Next, create a repair order online and send in the well-packed unit. Processing at Airbag24 takes 3–4 working days.

At Airbag24, the unit is examined on the test bench, defective components are repaired, stored crash data is erased and a function test is carried out. The unit you sent in then returns 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 89170-06420 get to Airbag24?

You send the control unit 89170-06420 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.