Airbag control unit with part number 86250-35040

What does the airbag control unit 86250-35040 do?

The airbag control unit 86250-35040 is the central control unit of the restraint system (SRS) in SsangYong. It processes the signals from the sensors, decides in an accident within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the system continuously in the background.

If the unit detects a fault, it displays this via the airbag warning light in the instrument cluster. In this way you notice a fault in everyday life without any check being necessary first.

After an accident, the control unit stores crash data and locks itself. This is part of how the system works and is not a sign of operating error.

Why does the control unit 86250-35040 fail?

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

Stored crash data remains in the unit, because a normal diagnostic tool cannot erase it. Airbag24 removes it as part of the repair.

The other causes arise inside the unit or at its contacts. They develop over time or through electrical stress such as a weak battery or a jump start.

How can you tell that the 86250-35040 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, an error message appears in the instrument cluster, the diagnostic tool cannot connect to the control unit, or the fault memory cannot be cleared. Then airbags and seatbelt pretensioners may possibly not trigger in an emergency.

The airbag warning light is the most important signal in everyday life. If it stays on or keeps lighting up, that is a sign you should take seriously, even if the vehicle can still be driven without any obvious problem.

An error message in the instrument cluster and a fault memory that cannot be emptied confirm the suspicion. A read-out shows which fault is stored in the unit.

Which vehicles is the 86250-35040 fitted in?

The airbag control unit 86250-35040 is fitted in these vehicles: SsangYong Tivoli X100 (from 2015). To check whether your vehicle is among them, use this information together with the label on the unit.

The vehicles in detail:

• SsangYong Tivoli X100 (from 2015)

Comparing the part number on the label with this page only ensures that you have the correct unit in front of you. Have the fault memory read out in addition beforehand, because only this shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 86250-35110.

How does the repair of the 86250-35040 work?

Processing at Airbag24 usually takes 3–4 working days. Beforehand, have the fault memory read out and enclose the log, disconnect the battery and only then remove the control unit. Next, create a repair order online and send the unit in well packed.

Airbag24 checks the unit on the test bench, repairs defective components, deletes the crash data and carries out a function test. Only then is your own unit returned to you.

The order of steps during removal is fixed for safety reasons, and disconnecting the battery is one of the first steps.

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 86250-35040 get to Airbag24?

You send the unit as a parcel or you book a UPS collection for an extra charge. After the repair, Airbag24 sends it back by UPS.

Put the printed repair order into the parcel and pack the unit shock-resistant and carefully, so that it arrives undamaged.