Airbag control unit with part number 8635A143

What does the airbag control unit 8635A143 do?

The airbag control unit 8635A143 coordinates the restraint system (SRS) of Mitsubishi vehicles. From the signals of the crash sensors it calculates within fractions of a second which airbags and seatbelt pretensioners must be triggered. It also checks the system continuously and reports faults to the airbag warning light.

The diagnostic information the unit collects can be read out with a diagnostic tool. This makes a failure of the system visible early.

If an accident occurs, crash data is stored, after which the unit locks itself.

Why does the control unit 8635A143 fail?

The most common cause with this 8635A143 lies in crash data stored after an accident, even if no airbag was triggered. Aged electronics, cold solder joints, corrosion on plugs and voltage spikes can also contribute.

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

• aged electronic components
• cold solder joints
• corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump-start

Whether several of these points act together cannot be determined without testing. Airbag24 clarifies this on the test bench.

How can you tell that the 8635A143 is defective?

The airbag warning light in the instrument cluster lights up constantly or intermittently, and an error message appears. In addition, the diagnostic tool cannot establish a connection to the 8635A143, or the fault memory cannot be cleared.

The unit therefore shows a fault visibly. As long as this is the case, airbags and seatbelt pretensioners may not trigger in an actual accident.

Which vehicles is the 8635A143 fitted in?

The 8635A143 is fitted in these vehicles: Mitsubishi Pajero Sport KH (2008-2015).

The vehicles registered for this part number are listed below.

• Mitsubishi Pajero Sport KH (2008-2015)

You can check whether the unit is the right one by comparing the part number on the label of the removed control unit with this page. That confirms only the unit, not the cause. So have the fault memory read out first, because it shows whether the control unit itself or a plug or cable is affected.

For the same vehicles, we also repair control units with the part numbers 8635A123.

How does the repair of the 8635A143 work?

For the repair of the 8635A143 the sequence is fixed: first you have the fault memory read out and attach the log, then you disconnect the battery. Only then do you remove the unit. Processing at Airbag24 usually takes 3–4 working days.

Then you create the repair order online and pack the unit carefully. Airbag24 tests it on the test bench, replaces defective components, clears the stored crash data and runs a functional test before your own unit is 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 8635A143 get to Airbag24?

You send the 8635A143 as a parcel to Airbag24, or you book a UPS collection for an extra charge. After the repair, the unit comes back to you by UPS.

Pack the printed repair order into the parcel, and pack the unit shock-proof.