Airbag control unit with part number 8635A488

What does the airbag control unit 8635A488 do?

The airbag control unit 8635A488 controls the restraint system (SRS) in Mitsubishi. In an emergency, it evaluates the sensor signals and decides within milliseconds which airbags and seatbelt pretensioners are triggered.

Monitoring of the system runs continuously. If the unit detects a fault, it displays this via the airbag warning light in the instrument cluster.

After an accident, the control unit stores crash data and locks itself.

Why does the control unit 8635A488 fail?

The most common cause is stored crash data after an accident, even if no airbag was triggered. Further causes are aged electronics, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

A standard diagnostic tool cannot erase the crash data. Airbag24 removes this data during the repair.

The other causes mainly concern the electronics and their connections. Aged components and cold solder joints alter the behaviour of the circuit board, while moisture and corrosion at the plugs disturb the contact. Voltage spikes arise, for example, from a weak battery or a jump start.

How can you tell that the 8635A488 is defective?

A defect shows on the airbag warning light in the instrument cluster, which lights up permanently or intermittently. Error messages can come with it, and the diagnostic tool either cannot find the control unit or the fault memory cannot be cleared. Airbags and seatbelt pretensioners may then fail to trigger in an emergency.

Typical signs at a glance:

• airbag warning light on permanently or intermittently
• error message in the instrument cluster
• diagnostic tool receives no connection to the control unit
• fault memory cannot be cleared

If you notice any of these signs, have the system checked promptly.

Which vehicles is the 8635A488 fitted in?

The control unit 8635A488 is fitted in these vehicles: Mitsubishi L200 KL (2015-2023), KK (2015-2023) and KJ (2015-2023).

The following list shows the vehicles on record.

• Mitsubishi L200 KL (2015-2023)
• Mitsubishi L200 KK (2015-2023)
• Mitsubishi L200 KJ (2015-2023)

Two checks come before sending the unit in. Comparing the part number on the label of the removed unit with this page confirms that it is the right unit. The fault memory read out, on the other hand, shows whether the control unit is defective or whether a plug or cable is causing the problem.

For the same vehicles, we also repair control units with the part numbers 8635A362, 8635A364, 8635A434, 8635A440, 8635A522.

How does the repair of the 8635A488 work?

Processing at Airbag24 for inspection, repair and testing usually takes 3–4 working days. Beforehand, you have the fault memory read out, attach the log, disconnect the battery and remove the control unit. Then you create the repair order online and send in the unit.

Airbag24 checks the unit on the test bench, repairs the faulty components, erases the stored crash data and carries out a function test. Your own unit is then 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 8635A488 get to Airbag24?

You send the control unit as a package or arrange a UPS collection for an extra charge. Airbag24 also returns it by UPS after the repair.

Enclose the printed repair order in the package and pack the unit shockproof.