Airbag control unit with part number 86250-36130

What does the airbag control unit 86250-36130 do?

The airbag control unit 86250-36130 controls the restraint system (SRS) of SsangYong. It reads the messages from the crash sensors, decides within milliseconds in the event of an impact which airbags and seatbelt pretensioners to trigger, and checks the system continuously. After an accident, it stores crash data and locks itself.

The evaluation takes place within the control unit itself, and detected faults are stored in the fault memory. When such a fault occurs, the system indicates it via the airbag warning light in the instrument cluster.

The control unit also triggers the seatbelt pretensioners in an emergency, so its function is part of the overall protective effect of the restraint system.

Why does the control unit 86250-36130 fail?

With the 86250-36130, the most common cause after an accident is stored crash data, even if no airbag has deployed; a standard diagnostic tool cannot erase it. Other possible causes are aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes. Airbag24 erases the crash data during the repair.

Crash data remains in the unit even if no airbag has deployed. That a usual diagnostic tool cannot remove it is the reason this cause is so stubborn.

The remaining causes lie in the electronics and their connections. Aged components and cold solder joints can disrupt function. Moisture and corrosion at plug connections degrade contact, and voltage spikes, for example from a weak battery or a jump start, place additional stress on the electronics.

How can you tell that the 86250-36130 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently as soon as there is a fault in the 86250-36130. A fault message appears in the instrument cluster alongside it. The diagnostic tool cannot connect to the control unit, and the fault memory cannot be erased.

In an emergency, the airbags and seatbelt pretensioners may therefore fail to deploy, which is exactly why this warning matters.

Have the vehicle checked promptly when this warning appears, because a diagnosis with the diagnostic tool shows which faults are stored in the memory.

Which vehicles is the 86250-36130 fitted in?

Which models and years of manufacture are affected is shown in the following assignment. The 86250-36130 is fitted in these vehicles: SsangYong Rexton Y450 (from 2021) and Y400 (2017-2020).

The assignment in the overview:

• 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 establishes that you have the correct unit in front of you. Have the fault memory read out beforehand, because only this result 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 86250-38040.

How does the repair of the 86250-36130 work?

On the 86250-36130, first have the fault memory read out and attach the log, then disconnect the battery and only then remove the control unit. Afterwards, create a repair order online and send the unit in, carefully packed.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. The unit is then returned to you.

At Airbag24, processing usually takes 3–4 working days, and this period covers only checking, repairing and testing.

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 86250-36130 get to Airbag24?

The control unit 86250-36130 can be sent to us as a parcel or shipped with a UPS collection for an extra charge. Airbag24 returns it by UPS after the repair.

Enclose the printed repair order with the parcel and pad the unit shock-proof.