Airbag control unit with part number 89170-13040

What does the airbag control unit 89170-13040 do?

The airbag control unit 89170-13040 is the central control unit of the restraint system (SRS) for Toyota. It evaluates the signals from the crash sensors, decides in an accident within milliseconds on the triggering of airbags and seatbelt pretensioners, and monitors the system permanently.

The unit stores faults and displays them via the airbag warning light. The evaluation of the sensor data takes place within the unit itself, because the time until triggering is extremely short.

After an accident, the control unit stores crash data and locks itself. This fact is the first point of reference for every examination after damage.

Why does the control unit 89170-13040 fail?

Stored crash data are the most common cause on the 89170-13040, even if no airbag was triggered after an accident. Further causes are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

The crash data remain in the memory of the unit. A standard diagnostic tool cannot erase them, so the fault persists even after reading out.

Electronic components age, solder joints become cold, and moisture or corrosion affects the plug connectors.

Voltage spikes, for example from a weak battery or a jump start, can likewise cause damage.

How can you tell that the 89170-13040 is defective?

You recognise a defect on the 89170-13040 by the airbag warning light in the instrument cluster, which lights up permanently or intermittently. In addition there is a fault message in the instrument cluster, a missing connection between the diagnostic tool and the control unit, and a fault memory that cannot be cleared.

This warning light is a signal you should not ignore. It indicates a fault that the system has detected, and it stays on for as long as the fault exists.

In the event of a fault, airbags and seatbelt pretensioners may fail to trigger in an emergency. A prompt check is therefore advisable.

Which vehicles is the 89170-13040 fitted in?

The 89170-13040 is fitted in these vehicles: Toyota Verso E120 (2001-2004).

The models to which the unit is assigned follow directly below.

• Toyota Verso E120 (2001-2004)

On the one hand, compare the part number on the label of the removed unit with this page, which only confirms that it is the right unit. On the other hand, have the fault memory read out beforehand. Only this result shows whether the control unit is the cause or whether a plug or cable triggers the fault.

For the same vehicles, we also repair control units with the part numbers 8917013060.

How does the repair of the 89170-13040 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and remove the control unit. Afterwards create a repair order online and pack the unit well. At Airbag24, processing usually takes 3–4 working days.

The sequence is important so that removal is safe.

Airbag24 examines the unit sent in on the test bench, replaces defective components, deletes the stored crash data and carries out a functional test. Afterwards 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 89170-13040 get to Airbag24?

You send the 89170-13040 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 in the parcel and pack the unit shock-proof.