Airbag control unit with part number P8635A145

What does the airbag control unit P8635A145 do?

The airbag control unit P8635A145 takes over the evaluation of the crash sensors in Mitsubishi and decides in an accident which airbags and seatbelt pretensioners are triggered within milliseconds. In operation it also monitors the entire system.

In doing so it checks circuits, sensor signals and the connection to the trigger elements. It stores irregularities in the fault memory.

After an accident it stores crash data and locks itself.

Why does the control unit P8635A145 fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered. Other causes are aged components, cold solder joints, moisture and corrosion, and voltage spikes; a normal diagnostic tool cannot erase the crash data.

The following causes come into consideration in detail:

• Ageing of electronic components
• Cold solder joints
• Moist or corroded plug connections
• Voltage spikes from a weak battery or a jump start

Airbag24 erases the crash data during the repair. The other causes show over time, when heat and moisture act on the vehicle for years.

How can you tell that the P8635A145 is defective?

The warning light in the instrument cluster lights up permanently or intermittently, accompanied by a fault message. The diagnostic tool gets no connection to the control unit, and the fault memory remains. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

The light is the most important hint the system gives. Anyone who sees it should have the fault memory read out promptly and then decide on the next steps.

A connection error during read-out can also have several causes; therefore only the check of the fault memory provides a reliable result.

Which vehicles is the P8635A145 fitted in?

The control unit P8635A145 is fitted in these vehicles: Mitsubishi Lancer CY (2007-2017).

The vehicles are listed individually here:

• Mitsubishi Lancer CY (2007-2017)

Compare the part number on the label of the removed unit with this page, so that you have the right unit in front of you. Have the fault memory read out beforehand, because 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 P8635A146, P8635A168, P8635A239, P8635A240, P8635A242, P8635A244.

How does the repair of the P8635A145 work?

First have the fault memory read out and enclose the log. Then disconnect the battery, and only then remove the control unit. Finally, create a repair order online and send in the unit.

Airbag24 checks the unit on the test bench and repairs defective components. Stored crash data is also erased by Airbag24 before the function test. The processing takes 3–4 working days as a rule; after that 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 P8635A145 get to Airbag24?

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

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