Airbag control unit with part number P32395428

What does the airbag control unit P32395428 do?

As a central unit, the airbag control unit P32395428 controls the restraint system (SRS) of Volvo. It reads the signals from the crash sensors, determines within fractions of a second in an accident which airbags and seatbelt pretensioners are triggered, and checks the system constantly. It shows faults via the airbag warning light.

Monitoring runs permanently in the background. It covers the interplay of sensors and triggering. If the unit detects a fault, it writes an entry to the fault memory, which a workshop can have read out.

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

Why does the control unit P32395428 fail?

The most common cause on the P32395428 is stored crash data, even if no airbag has deployed. Other possible causes include aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes. With this control unit, deleting the crash data is often not possible; if you would like it deleted, contact Airbag24 briefly before sending the unit in, so that it can check the part number.

Besides the crash data, the following other causes are possible:

• aged electronic components
• cold solder joints on the circuit board
• moisture and corrosion at plug connectors
• voltage spikes, for example from a weak battery or a jump start

Which of these applies is only shown by examining the control unit.

How can you tell that the P32395428 is defective?

The airbag warning light in the instrument cluster lights up on the P32395428, either permanently or intermittently. At the same time, a fault message appears in the instrument cluster, and the diagnostic tool gets no connection to the control unit; the fault memory also cannot be cleared.

In that case, the airbags and seatbelt pretensioners may not deploy in an emergency.

The warning light is therefore a reason to have the system checked.

Which vehicles is the P32395428 fitted in?

The control unit P32395428 is fitted in these vehicles: Volvo XC60 Y20 (2008–2013) and Y20 Facelift (2013-2017). Check the list to see whether your vehicle is among them.

You will find the matching models in this list:

• Volvo XC60 Y20 (2008–2013)
• Volvo XC60 Y20 Facelift (2013-2017)

First compare the part number on the label of the removed unit with this page. This only makes sure that you have the right unit. Also have the fault memory read out before removal, because only this finding shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 31318792, 31658440, P 31406637, P31313827, P31334279.

How does the repair of the P32395428 work?

The procedure begins with reading out the fault memory, whose log you enclose. Only after that do you disconnect the battery and remove the control unit P32395428. Then create a repair order online and send the unit in, well packed. Airbag24 checks it on the test bench, replaces defective components and carries out a function test; processing usually takes 3–4 working days.

The order of these steps is mandatory for safety reasons.

If you would like the crash data deleted, contact Airbag24 briefly before sending the unit in.

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 P32395428 get to Airbag24?

You send the control unit P32395428 in as a parcel or book a UPS collection for an extra charge; after the repair, Airbag24 returns it by UPS.

Put the printed repair order into the parcel, and pack the unit shockproof.