Airbag control unit with part number 68029771AA

What does the airbag control unit 68029771AA do?

The airbag control unit 68029771AA coordinates the restraint system of Dodge. It processes the measurements from the crash sensors and decides in a fraction of a second in an accident which airbags and seatbelt pretensioners are triggered.

The unit also checks the system without a break. It shows faults via the airbag warning light.

After an accident it stores crash data and remains locked afterwards.

Why does the control unit 68029771AA fail?

The most common cause is considered to be crash data that remains in the memory of the 68029771AA after an accident, even if no airbag has fired; a normal diagnostic tool cannot remove it. Other triggers are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or jump-starting.

The crash data documents that an accident has taken place, but it does not prove that components are damaged. Whether the unit is defective is clarified only by the inspection.

These influences act on the electronics and their contacts over a longer period.

How can you tell that the 68029771AA is defective?

A defect in the 68029771AA shows when the airbag warning light in the instrument cluster lights up permanently or intermittently. This is accompanied by an error message, a lack of connection to the diagnostic tool and a fault memory that cannot be cleared.

If you see these signs, airbags and seatbelt pretensioners may not deploy in an emergency.

The warning light is the clearest indication from the vehicle, and an early inspection is appropriate.

Which vehicles is the 68029771AA fitted in?

The control unit 68029771AA is fitted in these vehicles: Dodge Sprinter NCV3 (2007-2009). This assignment belongs to the part number and is shown here in overview.

Here follows the list of assigned vehicles:

• Dodge Sprinter NCV3 (2007-2009)

Comparing the part number on the label of the removed unit with this page only confirms that it is the right unit. Have the fault memory read out beforehand as well, because only this shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 68029747AA, 68029750AA.

How does the repair of the 68029771AA work?

Have the fault memory of the 68029771AA read out and enclose the log; then disconnect the battery before removing the control unit. Next create a repair order online and send in the well-packed unit. At Airbag24, inspection, repair and function test usually take 3–4 working days.

Once the unit has been inspected and tested, your own unit goes back to you. The 3–4 working days cover only the 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 68029771AA get to Airbag24?

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

The printed repair order goes into the parcel, and the unit is packed shockproof.