Airbag control unit with part number P8635A240

What does the airbag control unit P8635A240 do?

The airbag control unit P8635A240 is the central control unit of the restraint system (SRS) of Mitsubishi. It evaluates the crash sensors and, in an accident, triggers the appropriate airbags and seatbelt pretensioners within milliseconds.

It monitors the system continuously and reports faults via the airbag warning light in the instrument cluster. After an accident it stores crash data and locks itself.

Why does the control unit P8635A240 fail?

The most common cause for the P8635A240 is crash data stored after an accident, even if no airbag has deployed. Further causes are ageing components, cold solder joints, moisture on plug connections and voltage spikes.

Crash data is the most common reason for a fault, and a normal diagnostic tool cannot erase it. Airbag24 deletes it during the repair.

Ageing electronic components and cold solder joints form a separate group of causes.

Moisture and corrosion on plug connections, as well as voltage spikes, for example from a weak battery or jump-starting, round off the picture.

How can you tell that the P8635A240 is defective?

On a defect in the P8635A240, the airbag warning light in the instrument cluster lights up permanently or intermittently. A fault message appears alongside it, the diagnostic tool gets no connection and the fault memory cannot be cleared. In an emergency, the airbags and seatbelt pretensioners may then not deploy.

This light gives a clear signal that you should take seriously. Have the display checked before the condition worsens.

Which vehicles is the P8635A240 fitted in?

The P8635A240 is fitted in these vehicles: Mitsubishi Lancer CY (2007-2017).

The list shows which vehicles belong to this part number:

• Mitsubishi Lancer CY (2007-2017)

Compare the part number on the label of the unit with this page. This only confirms that the unit is the correct one. Have the fault memory read out beforehand, as it alone shows whether the control unit is faulty or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers P8635A146, P8635A168, TARME1308R0924, TARME2937R0152.

How does the repair of the P8635A240 work?

For the P8635A240, first have the fault memory read out and attach the log. Then disconnect the battery, and only then remove the control unit. Create the repair order online and send the well-packed unit in.

This sequence is mandatory for safety when removing the unit.

At Airbag24 the unit is examined on the test bench, defective components are replaced, stored crash data is deleted and a function test is carried out. Processing at Airbag24 usually takes 3–4 working days. 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 P8635A240 get to Airbag24?

You send the control unit P8635A240 as a parcel, or book a UPS collection for an extra charge. The return after the repair is made by UPS.

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