Airbag control unit with part number 89170-02510

What does the airbag control unit 89170-02510 do?

The airbag control unit 89170-02510 is the central control unit of the restraint system (SRS) of Toyota. It evaluates the crash sensors and decides in a crash within milliseconds which airbags and seatbelt pretensioners are triggered. It also monitors the entire system. After a crash it stores crash data and locks itself.

Fault monitoring runs constantly. Detected faults are shown by the unit via the airbag warning light.

Why does the control unit 89170-02510 fail?

The most common cause is crash data stored in the unit after an accident, even if no airbag was triggered. A normal diagnostic tool cannot erase it. Further causes are aged components, cold solder joints, moisture and corrosion at plug connectors, and voltage peaks.

The crash data remains stored after it has been read out. Airbag24 erases it during the repair.

The further causes in detail:

• aged electronics on the circuit board
• cold solder joints
• moisture and corrosion at plugs
• voltage peaks, for example from a weak battery or a jump start

How can you tell that the 89170-02510 is defective?

A fault in the unit can be recognised by the airbag warning light in the instrument cluster, which lights up constantly or intermittently. Other signs are a fault message in the instrument cluster, a lack of connection to the diagnostic tool, or a fault memory that cannot be cleared. In an emergency, the airbags and seatbelt pretensioners may then fail to trigger.

The warning light indicates the fault; it is not an incidental finding that you should overlook.

Even if the diagnostic tool cannot establish a connection to the control unit, or the fault memory cannot be cleared, there is a fault that you should have checked.

Which vehicles is the 89170-02510 fitted in?

The airbag control unit 89170-02510 is fitted in these vehicles: Toyota Auris E150 (2006-2010) and E150 Facelift (2010-2012).

The assignment looks like this:

• Toyota Auris E150 (2006-2010)
• Toyota Auris E150 Facelift (2010-2012)

Comparing the part number on the label of the removed unit with this page only shows that you have the correct unit. The cause is clarified by the fault memory, which you should have read out beforehand: it 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 215537-106, 89170-02560, 89170-0W330, 8924502040.

How does the repair of the 89170-02510 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only afterwards remove the control unit. Next you create a repair order online and pack the unit well. Airbag24 checks it, replaces defective components, erases crash data and carries out a function test; processing usually takes 3–4 working days.

The sequence is mandatory for safety reasons, because the airbag system must be de-energised before removal.

Once the check and the function test are complete, your own unit 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 89170-02510 get to Airbag24?

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

Padded cardboard is a good choice, so that the control unit survives transport undamaged.