Airbag control unit with part number P8635A061

What does the airbag control unit P8635A061 do?

The airbag control unit P8635A061 is the control unit of the restraint system (SRS) of Mitsubishi. It evaluates the signals from the crash sensors, decides in a crash whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

It displays faults it finds via the airbag warning light in the instrument cluster. After an accident, the unit stores crash data and locks itself.

Why does the control unit P8635A061 fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered, which cannot be erased with a normal diagnostic tool. Other causes are ageing, cold solder joints, moisture and corrosion, and voltage spikes.

The crash data is created by the crash event itself, not only when an airbag is triggered. A normal diagnostic tool cannot reach it for erasure.

Aged electronic components and cold solder joints impair the behaviour of the circuit over time. Moisture and corrosion disrupt the contacts at plug connections.

Voltage spikes, for example from a weak battery or when starting with jump leads, place additional stress on the electronics.

How can you tell that the P8635A061 is defective?

The airbag warning light shows the fault by lighting up permanently or intermittently. A diagnostic tool may then find no connection to the control unit, and airbags and seatbelt pretensioners may not be able to trigger in an emergency.

The signs in detail:

• Airbag warning light lights up permanently or intermittently
• Fault message in the instrument cluster
• Diagnostic tool receives no connection to the control unit
• Fault memory cannot be cleared

A display that only appears intermittently should also be checked.

Which vehicles is the P8635A061 fitted in?

The control unit P8635A061 for Mitsubishi is fitted in these vehicles: Mitsubishi Lancer CY (2007-2017).

The following vehicles are stored for this part number:

• Mitsubishi Lancer CY (2007-2017)

Compare the part number on the label of the removed unit with the number on this page; this only confirms that it is the correct unit. Also have the fault memory read out beforehand, because only this 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 P8635A146, P8635A168, P8635A239, P8635A240, P8635A242, P8635A244.

How does the repair of the P8635A061 work?

You have the fault memory read out and enclose the log. Then you disconnect the battery, remove the control unit and create a repair order online. Afterwards you send in the well-packed unit.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. The unit then goes back to you.

Processing at Airbag24 usually takes 3–4 working days. This time covers only checking, repairing and testing, not your steps or the shipping. 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 P8635A061 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 to you via UPS.

Place the printed repair order in the parcel and pack the unit shock-resistant.