Airbag control unit with part number 68029750AA

What does the airbag control unit 68029750AA do?

The airbag control unit 68029750AA is the control unit of the SRS system for Dodge. It processes the signals from the crash sensors and determines which airbags and seatbelt pretensioners are triggered in a crash. It monitors the system constantly, and it reports faults via the airbag warning light.

The unit works in the background and records any deviations it detects in the fault memory.

After an accident, the control unit stores crash data and locks itself. Only the repair lifts the lock.

Why does the control unit 68029750AA fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered. A standard diagnostic tool cannot erase this data. Aged components, cold solder joints, moisture and corrosion, and voltage spikes can also contribute.

• Aged electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example from a weak battery or jump-starting

The stored crash data mean that a fault remains reported, even if the electronics appear to be in order.

Which cause applies in an individual case can only be determined by reading out and checking.

How can you tell that the 68029750AA is defective?

The airbag warning light stays on in the instrument cluster permanently or intermittently as soon as something in the system is wrong. A fault message also appears in the instrument cluster, and the diagnostic tool does not reach the control unit. The fault memory cannot be cleared, and in an emergency airbags and seatbelt pretensioners may not deploy.

Do not wait; a prompt check will provide clarity.

Which vehicles is the 68029750AA fitted in?

The airbag control unit 68029750AA is fitted in these vehicles: Dodge Sprinter NCV3 (2007-2009).

The list of affected vehicles follows.

• Dodge Sprinter NCV3 (2007-2009)

Before removal, compare the part number on the label with this page so that you have the correct unit. Also have the fault memory read out, because only the result 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, 68029771AA.

How does the repair of the 68029750AA work?

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

Airbag24 checks the control unit on the test bench, repairs defective components, erases the crash data and carries out a function test. Your own unit then goes back to you.

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 68029750AA get to Airbag24?

Shipping is either by parcel, which you send yourself, or by a UPS collection booked for an extra charge. Airbag24 returns the unit by UPS after the repair.

Enclose the printed repair order and pack the unit so that it is protected against knocks.