Airbag control unit with part number 89170-42241

What does the airbag control unit 89170-42241 do?

The airbag control unit 89170-42241 coordinates the restraint system (SRS) in Toyota. It reads the crash sensors, determines in an accident the triggering of airbags and seatbelt pretensioners, and monitors the system continuously.

The control unit reports faults via the airbag warning light in the instrument cluster. This way the driver can see that the system is disturbed, even before a check takes place.

After an accident, it stores crash data and locks itself.

Why does the control unit 89170-42241 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. Other causes include ageing components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

Crash data cannot be erased with an ordinary diagnostic tool, so an attempt to erase it leads nowhere.

The other causes concern the electronics and their connections. Electronic components age, solder joints can be cold, and moisture and corrosion damage the plugs.

Voltage spikes arise, for example, from a weak battery or when a vehicle is started with a jump start.

How can you tell that the 89170-42241 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently. In addition, a fault message appears in the instrument cluster, the diagnostic tool finds no connection, and the fault memory cannot be cleared.

The signs at a glance:

• Airbag warning light on permanently or intermittently
• Fault message in the instrument cluster
• No connection between diagnostic tool and control unit
• Fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may then not deploy. The finding must therefore be taken seriously.

Which vehicles is the 89170-42241 fitted in?

The control unit 89170-42241 is fitted in these vehicles: Toyota RAV4 XA30 (2006-2009) and XA30 Facelift (2009-2013). The information relates to the part number 89170-42241 of the make Toyota.

The vehicles at a glance:

• Toyota RAV4 XA30 (2006-2009)
• Toyota RAV4 XA30 Facelift (2009-2013)

Comparing the part number on the label with this page only confirms that you have the correct unit in front of you. Have the fault memory 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 150300-8850, 89170-0R022, 89170-0R140, 89170-42201, 89170-42210, 89170-42420.

How does the repair of the 89170-42241 work?

First read out the fault memory and attach the log, then disconnect the battery and remove the control unit. Afterwards, create the repair order online and send the unit off well packed. Airbag24 checks it, replaces defective components and erases the crash data; processing usually takes 3–4 working days.

On the test bench, Airbag24 also carries out a function test before your own unit is returned. The battery is disconnected before removal; this order 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 89170-42241 get to Airbag24?

The unit goes to Airbag24 as a parcel, or UPS collects it for an extra charge. Airbag24 sends it back by UPS after the repair.

Enclose the printed repair order in the parcel. Pack the control unit shock-resistant.