Airbag control unit with part number 89170-33D60

What does the airbag control unit 89170-33D60 do?

The airbag control unit 89170-33D60 is the central control unit of the SRS of Lexus. It evaluates signals from the crash sensors, determines within milliseconds in an accident which airbags and seatbelt pretensioners are triggered, and monitors the system. After an accident, it stores crash data and locks itself.

The control unit is connected to all sensors and triggers and reports irregularities to the airbag warning light in the instrument cluster.

Why does the control unit 89170-33D60 fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered; a normal diagnostic tool leaves it untouched. Airbag24 deletes crash data during the repair. Besides this, aged components, cold solder joints, moisture at plug connections and voltage spikes come into consideration.

Crash data alone says little about the condition of the electronics. Components age, solder joints can go cold, and moisture attacks plug connections. Voltage spikes arise, for example, from a weak battery or jump-starting.

How can you tell that the 89170-33D60 is defective?

A defect shows when the airbag warning light in the instrument cluster stays on permanently or intermittently. Also present are a fault message in the instrument cluster, no connection to the diagnostic tool and a fault memory that cannot be cleared.

A finding like this must be taken seriously, because airbags and seatbelt pretensioners may not trigger in an emergency.

Which vehicles is the 89170-33D60 fitted in?

The control unit 89170-33D60 is fitted in these vehicles: Lexus ES AXZH60 (from 2018).

This overview lists the vehicles recorded for this part number.

• Lexus ES AXZH60 (from 2018)

Comparing the part number on the label with this page only ensures that the unit fits. The fault memory must be read out beforehand, because only this result shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 89170-06820, 89170-06850, 89170-06880, 89170-33B90, 89170-33C30, 89170-33C50.

How does the repair of the 89170-33D60 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit. Afterwards create a repair order online and send in the well-packed unit. Airbag24 checks it, repairs defective components, deletes crash data and carries out a function test; processing usually takes 3–4 working days.

The steps follow a fixed order, because safety during removal takes priority.

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 89170-33D60 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge; after the repair Airbag24 returns it by UPS. The printed repair order goes into the parcel, and the control unit is packed shock-resistant.

Proper packing with padding material prevents damage.