Airbag control unit with part number 68346721AB

What does the airbag control unit 68346721AB do?

The airbag control unit 68346721AB forms the central control unit of the restraint system (SRS) of Dodge. It processes the signals from the crash sensors, determines in a crash within milliseconds which airbags and seatbelt pretensioners fire, and monitors the entire system continuously.

The unit shows faults in the system via the airbag warning light in the instrument cluster. The display helps you spot problems early, before the system could fail in an emergency.

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

Why does the control unit 68346721AB fail?

Stored crash data is the most common cause with the 68346721AB, namely after an accident, even if no airbag was deployed. A normal diagnostic tool cannot erase this data. Further causes are aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The crash data remains stored because the unit records the accident, not because an airbag fired. This difference matters for the inspection.

Voltage spikes arise, for example, from a weak battery or a jump start. Only the inspection of the unit reveals the exact cause.

How can you tell that the 68346721AB is defective?

A defect in the control unit 68346721AB becomes apparent when the airbag warning light in the instrument cluster lights up permanently or intermittently, when an error message appears, when the diagnostic tool does not reach the control unit, or when the fault memory cannot be cleared.

• Warning light in the instrument cluster lights up
• Error message in the instrument cluster
• Diagnostic tool does not reach the control unit
• Fault memory cannot be cleared

If these signs persist, have the system checked. Airbags and seatbelt pretensioners may not deploy in an emergency.

Which vehicles is the 68346721AB fitted in?

The control unit 68346721AB is fitted in these vehicles: Dodge Ram DS/DJ/D2 (2009-2018).

These vehicles are recorded for this part number:

• Dodge Ram DS/DJ/D2 (2009-2018)

Compare the part number on the label of the removed unit with this page. This only ensures that it is the correct unit. Have the fault memory read out beforehand, because only this 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 0285015046, 56043128AC, 56043128AD, 68303217AA, 68303218AA, 68346712AA.

How does the repair of the 68346721AB work?

First have the fault memory read out and attach the record. Then disconnect the battery and only then remove the control unit 68346721AB. Next create a repair order online and send in the well-packed unit.

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

Processing at Airbag24 usually takes 3–4 working days. 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 68346721AB get to Airbag24?

You send the control unit 68346721AB as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back via UPS.

Place the printed repair order in the parcel and pack the unit so that it is shock-resistant.