Airbag control unit with part number 89170-60051

What does the airbag control unit 89170-60051 do?

The airbag control unit 89170-60051 coordinates the restraint system (SRS) of Toyota and Lexus. It continuously checks the signals from the crash sensors and decides within a fraction of a second in an accident which airbags and seatbelt pretensioners are triggered. Faults in the system are reported via the airbag warning light in the instrument cluster.

The evaluation runs in the background for the entire journey. This keeps the system ready to react quickly in an emergency, without the driver having to do anything.

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

Why does the control unit 89170-60051 fail?

The most common cause is crash data that was stored in the unit after an accident, even if no airbag was triggered. A normal diagnostic tool cannot erase this data. Other possible causes include aged electronic components, cold solder joints, moisture and corrosion at plug connections, as well as voltage spikes.

Crash data comes first because it remains in the memory after an accident and locks the unit. The other causes affect the electronics themselves and their surroundings. Components age, and moisture attacks contacts, making them unreliable.

Voltage spikes occur, for example, when starting the engine with a weak battery or when jump-starting from another vehicle. Whether one of these causes applies in an individual case only becomes clear through testing in the lab.

How can you tell that the 89170-60051 is defective?

The airbag warning light in the instrument cluster lights up permanently or only intermittently. In addition, there may be a fault message in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared.

As long as the system reports a fault, airbags and seatbelt pretensioners may not trigger in an emergency. For this reason, you should not ignore a lit warning light, but have it checked promptly.

If no connection to the diagnostic tool can be established, the cause does not automatically lie in the control unit. Cables and plugs may also be responsible, and only the readout shows where the fault lies.

Which vehicles is the 89170-60051 fitted in?

The control unit 89170-60051 is fitted in these vehicles: Toyota Land Cruiser J100 (1998-2007); Lexus LX UZJ100 (1998-2007).

The list shows the vehicles recorded for this part number.

• Toyota Land Cruiser J100 (1998-2007)
• Lexus LX UZJ100 (1998-2007)

Two steps will help you. First, compare the part number on the label of the removed unit with this page, so you can be sure it is the right unit. Also, have the fault memory read before removal, because only this 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 89170-60150, 89170-60160, 89170-60220, 89170-60330, 89170-60540.

How does the repair of the 89170-60051 work?

First, have the fault memory read out and attach the log, then disconnect the battery. Only then remove the control unit and create a repair order online. Airbag24 usually takes 3–4 working days to process the unit.

After you send it in, Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Afterwards, your own 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 89170-60051 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns the control unit to you by UPS.

Put the printed repair order in the parcel and pack the unit shockproof before handing it over.