Airbag control unit with part number 96406712

What does the airbag control unit 96406712 do?

The airbag control unit 96406712 is the central control unit of the restraint system (SRS) of Daewoo and Chevrolet. It processes the signals from the crash sensors, decides within fractions of a second on the triggering of airbags and seatbelt pretensioners, and monitors the system continuously during operation. It reports faults via the airbag warning light.

Monitoring covers the sensors, the wiring and the triggering itself. If the unit detects an irregularity, it creates an entry in the fault memory.

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

Why does the control unit 96406712 fail?

Stored crash data from an accident is the most common cause, even if no airbag has fired. A normal diagnostic tool cannot erase it. Other causes are ageing electronic components, cold solder joints, moisture and corrosion on plug connectors, and voltage spikes, for example from a weak battery or a jump start.

The crash data remains in the memory even when the vehicle drives normally again after the accident. It is therefore worth considering the accident during fault finding, even if it was minor.

The other causes relate to the electronics themselves. Moisture and corrosion alter plug contacts, ageing weakens components, and voltage spikes can briefly overload them.

How can you tell that the 96406712 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently and thus indicates a defect. There are also fault messages in the instrument cluster, no connection to the diagnostic tool and a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to fire.

The warning light is the clearest sign, because it affects the entire restraint system and not just a single part.

Even without a connection to the diagnostic tool, that is an indication. The fault then cannot initially be narrowed down, and a check is necessary.

Which vehicles is the 96406712 fitted in?

The control unit 96406712 is fitted in these vehicles: Daewoo Lacetti J200 (2004-2010); Chevrolet Lacetti 1st generation (2004-2010).

The known assignment of the number is shown in this list:

• Daewoo Lacetti J200 (2004-2010)
• Chevrolet Lacetti 1st generation (2004-2010)

Comparing the part number on the label of the removed unit with this page only confirms that it is the correct unit. Also have the fault memory read out in advance, because the result shows whether the control unit itself is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 5WY64088, 5WY64088SIEMENS, 5WY66015, 5WY67123, 7088830, 94 833 086.

How does the repair of the 96406712 work?

First have the fault memory read out and attach the log. Then disconnect the battery and remove the control unit, and only after that create a repair order online. Next, send in the well-packed unit.

Airbag24 tests the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. The unit then goes back to you. Processing usually takes 3–4 working days, and only for the testing, repairing and function testing at Airbag24.

The order is for safety during removal. 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 96406712 get to Airbag24?

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

Place the printed repair order in the parcel and pack the unit shock-proof.