Airbag control unit with part number 86250-21020

What does the airbag control unit 86250-21020 do?

The airbag control unit 86250-21020 is the control centre of the restraint system (SRS) of SsangYong. It processes the crash sensors' messages continuously and determines in an accident within milliseconds which airbags and seatbelt pretensioners are triggered.

The system is checked continuously, and the unit reports faults via the airbag warning light in the instrument cluster.

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

Why does the control unit 86250-21020 fail?

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

The crash data remains stored in the unit even when the vehicle has long been driven again. A normal diagnostic tool cannot erase it, but Airbag24 erases it during the repair.

Aged electronic components, cold solder joints, moisture and corrosion at the plugs, and voltage spikes, for example from a weak battery or a jump start, are also possible.

How can you tell that the 86250-21020 is defective?

The airbag warning light in the instrument cluster lights up constantly or intermittently, and a fault message appears in the instrument cluster. A failed connection setup to the diagnostic tool or a fault memory that cannot be cleared also indicates this.

Typical signs at a glance:

• airbag warning light that stays on constantly
• airbag warning light that lights up only intermittently
• fault message in the instrument cluster
• diagnostic tool without connection to the control unit

In this state, airbags and seatbelt pretensioners may fail to deploy in an emergency. A prompt check is therefore advisable.

Which vehicles is the 86250-21020 fitted in?

In these vehicles the control unit 86250-21020 is fitted: SsangYong Stavic A100 (2004-2013); SsangYong Rodius A100 (2004-2013).

The list below shows the vehicles recorded for this unit.

• SsangYong Stavic A100 (2004-2013)
• SsangYong Rodius A100 (2004-2013)

First compare the part number on the label of the removed unit with this page; that only confirms it is the right unit. Also have the fault memory read out beforehand, because this result shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 0 285 010 181, 5WK44281, 5WY64004, 8625021030, 8625021031.

How does the repair of the 86250-21020 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit. Processing at Airbag24 takes 3–4 working days in general.

Then create a repair order online and pack the unit well for sending. Airbag24 checks it on the test bench, repairs defective components, erases the stored crash data and carries out a function test.

Afterwards your own unit goes back to you. The 3–4 working days relate exclusively to this work 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 86250-21020 get to Airbag24?

You can send the control unit 86250-21020 by parcel or have it collected by UPS, which is booked for an extra charge. The return after the repair is made by UPS.

The printed repair order goes into the parcel, and the unit is packed shock-resistant.