Airbag control unit with part number 68346721AC

What does the airbag control unit 68346721AC do?

The airbag control unit 68346721AC is the central control unit of the restraint system (SRS) in Dodge. It evaluates the signals from the crash sensors, decides within milliseconds in the event of an accident whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously. Faults are reported via the airbag warning light.

During operation, the unit checks sensors, connections and triggers as soon as the ignition is switched on. This allows it to detect faults before they could have an effect in an emergency.

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

Why does the control unit 68346721AC fail?

After an accident, stored crash data is among the most common causes of a 68346721AC failure, even if no airbag was triggered. Other causes include ageing electronic components, dry solder joints, moisture and corrosion on plug connections, and voltage spikes, for example from a weak battery or from jump-starting.

An ordinary diagnostic tool cannot reach this data. Airbag24 deletes it as part of the repair.

The remaining causes lie in the electronics themselves or in their connections. Components become more susceptible over time, solder joints can make poor contact, and moisture or corrosion attack the plugs. Voltage spikes put additional strain on the electronics, for example when starting the engine with a jump start.

How can you tell that the 68346721AC is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently when the 68346721AC has stored a fault. In addition, a fault message appears in the instrument cluster, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

The airbag warning light is the central signal that indicates the fault. In an emergency, it is then uncertain whether airbags and seatbelt pretensioners will trigger.

A check will quickly show whether the system is working reliably.

Which vehicles is the 68346721AC fitted in?

A comparison of vehicles lets you check whether your own car is affected. The control unit 68346721AC is fitted in these vehicles: Dodge Ram DS/DJ/D2 (2009-2018).

In detail, we list these vehicles for this part number:

• Dodge Ram DS/DJ/D2 (2009-2018)

First compare the part number on the label of the removed unit with this page; this only confirms that it is the correct unit. Also have the fault memory read before removal, because only the log shows whether the control unit is defective or whether plugs or cables are 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 68346721AC work?

Processing the 68346721AC at Airbag24 usually takes 3–4 working days. First have the fault memory read and attach the log. Then disconnect the battery, remove the control unit, create the repair order online and send the unit in.

On the test bench, Airbag24 examines the unit, repairs defective components, deletes the stored crash data and checks the function. You then get your own unit back.

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 68346721AC get to Airbag24?

You send the 68346721AC as a parcel, or you book a UPS collection for an extra charge. The return after repair is by UPS.

Include the printed repair order and pack the unit so that it is shock-resistant.