Airbag control unit with part number 86250-36271

What does the airbag control unit 86250-36271 do?

The airbag control unit 86250-36271 is the central control unit of the restraint system (SRS) for SsangYong. It evaluates the signals from the crash sensors, decides within milliseconds in an accident whether airbags and seatbelt pretensioners are triggered, and reports faults via the airbag warning light. After an accident, it stores crash data and locks itself.

In operation, the unit continuously monitors the sensors, the triggers and their connections. Because it makes the decision in an emergency, it is one of the safety-relevant components in the vehicle.

Why does the control unit 86250-36271 fail?

Stored crash data is the most common cause, even if no airbag has deployed; it cannot be erased with a normal diagnostic tool. Other causes include aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example in the event of a weak battery or a jump start. Airbag24 erases the crash data during the repair.

The crash data is held in the memory of the control unit, regardless of whether an airbag has deployed. The remaining causes affect the electronics themselves or their surroundings in the vehicle.

How can you tell that the 86250-36271 is defective?

The airbag warning light in the instrument cluster lights up constantly or intermittently, an error message appears in the instrument cluster, the diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared. Then airbags and seatbelt pretensioners may not deploy in an emergency.

The warning light shows the state of the system, which is why it is the first sign to watch for. Have the fault checked promptly.

Which vehicles is the 86250-36271 fitted in?

The control unit 86250-36271 is fitted in these vehicles: SsangYong Rexton Y450 (from 2021) and Y400 (2017-2020).

The following list shows the vehicles recorded for this part number.

• SsangYong Rexton Y450 (from 2021)
• SsangYong Rexton Y400 (2017-2020)

Compare the part number on the label of the removed unit with this page. This only ensures that it is the correct unit. Have the fault memory read out beforehand: only the log shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 86250-38040.

How does the repair of the 86250-36271 work?

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

Removal takes place only after the battery has been disconnected, because safety takes priority with the airbag system.

Airbag24 checks the unit on the test bench, rectifies the defect on the affected components, erases the stored crash data and carries out a function test. Your own unit is then returned to you. Processing covers only these tasks at Airbag24.

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 86250-36271 get to Airbag24?

You send the control unit 86250-36271 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

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