Airbag control unit with part number 89170-0H140

What does the airbag control unit 89170-0H140 do?

The airbag control unit 89170-0H140 is the central control unit of the restraint system for Toyota, Peugeot and Citroën. It evaluates the signals from the crash sensors, triggers the appropriate airbags and seatbelt pretensioners within milliseconds in a crash, and signals faults via the airbag warning light.

Outside an accident the unit keeps working in the background and checks the system continuously. If it detects a fault, it creates an entry in the fault memory and activates the warning light.

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

Why does the control unit 89170-0H140 fail?

On the 89170-0H140, the most common cause lies in the crash data stored after an accident, even if no airbag has deployed. Aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes can also cause failure.

Crash data cannot be cleared with a standard diagnostic tool, so the fault remains even after reading out. Airbag24 removes the crash data during the repair.

The other causes concern the condition of the electronics. Aged components, cold solder joints and moisture act on the connections over time. Voltage spikes during starting, for example with a weak battery or a jump-start, add further strain. Only the fault memory shows which cause is present.

How can you tell that the 89170-0H140 is defective?

You can recognise a defect in the 89170-0H140 by the airbag warning light in the instrument cluster when it stays on permanently or intermittently, by an error message there, by a diagnostic tool without connection to the control unit, or by a fault memory that you cannot clear.

The warning light is the clearest sign, because it responds to every detected fault. If an error message also appears, the finding is clearly identified.

With such signs, airbags and seatbelt pretensioners may fail to deploy in an emergency. Have such a finding checked promptly.

Which vehicles is the 89170-0H140 fitted in?

The 89170-0H140 is fitted in these vehicles: Toyota Aygo AB10 (2005-2009), AB10 1st Facelift (2009-2012) and AB10 2nd Facelift (2012-2014); Peugeot 107 I (2005-2009), I 1st Facelift (2009-2012) and I 2nd Facelift (2012-2014); Citroën C1 I (2005-2008), I 1st Facelift (2008-2012) and I 2nd Facelift (2012-2014).

The list below shows the vehicles that Airbag24 assigns to this part number.

• Toyota Aygo AB10 (2005-2009)
• Toyota Aygo AB10 1st Facelift (2009-2012)
• Toyota Aygo AB10 2nd Facelift (2012-2014)
• Peugeot 107 I (2005-2009)
• Peugeot 107 I 1st Facelift (2009-2012)
• Peugeot 107 I 2nd Facelift (2012-2014)
• Citroën C1 I (2005-2008)
• Citroën C1 I 1st Facelift (2008-2012)
• Citroën C1 I 2nd Facelift (2012-2014)

Comparing the part number on the label of the removed unit with this page ensures that you have the correct unit. Have the fault memory read out beforehand: 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 212388104, 212388110, 2123BB106, 6546F6, 6546F7, 89170-0H010.

How does the repair of the 89170-0H140 work?

First have the fault memory of the 89170-0H140 read out and enclose the log. Then disconnect the battery, only then remove the control unit, create a repair order online and pack the unit well.

Airbag24 checks the unit on the test bench, replaces defective components, clears the stored crash data and carries out a function test. Processing usually takes 3–4 working days.

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 89170-0H140 get to Airbag24?

You can send the control unit 89170-0H140 in as a package, or book a UPS collection for an extra charge. The return journey after the repair is handled by Airbag24 via UPS.

The printed repair order goes in the package, and you pack the unit shock-proof.