Airbag control unit with part number P56043318AB

What does the airbag control unit P56043318AB do?

The airbag control unit P56043318AB is the control unit for airbags and seatbelt pretensioners in Dodge. Using the crash sensors, it measures the load, decides within milliseconds whether to trigger in an accident, and constantly monitors the restraint system (SRS). After an accident it stores crash data and locks itself.

Faults detected are passed on to the driver via the airbag warning light.

The drivetrain, chassis and brakes do not fall within its area of responsibility.

Why does the control unit P56043318AB fail?

The most common cause is crash data which remains stored after an accident even without an airbag being triggered, and which cannot be deleted with a standard diagnostic tool. Other causes include ageing of the electronics, cold solder joints, moisture and corrosion, and voltage spikes.

The further causes at a glance:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or jump-starting

Crash data arises from the event itself, regardless of whether airbags are triggered.

How can you tell that the P56043318AB is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and an error message appears in the instrument cluster. The diagnostic tool cannot establish a connection with the control unit, and the fault memory cannot be cleared. Airbags and seatbelt pretensioners may then possibly fail to deploy in an emergency.

Even a recurring light is a finding and requires an inspection.

If you see these signs, have the vehicle examined by a specialist workshop promptly.

Which vehicles is the P56043318AB fitted in?

The airbag control unit P56043318AB is fitted in these vehicles: Dodge Durango 2nd generation (2003-2006) and 2nd generation Facelift (2006-2009).

Below you will find the list of vehicles from our assignment.

• Dodge Durango 2nd generation (2003-2006)
• Dodge Durango 2nd generation Facelift (2006-2009)

Comparing the part number on the label with this page only ensures that you have the correct unit. Whether the control unit is defective or whether plugs or cables are causing the fault is only shown by the fault memory read out beforehand.

For the same vehicles, we also repair control units with the part numbers 4606948AC, 56043319AB, 56043866AB, 56054076AD.

How does the repair of the P56043318AB work?

First have the fault memory read out and enclose the log with the unit before you disconnect the battery and remove the control unit. Only then create the repair order online and send in the unit. At Airbag24, testing, repair and functional testing usually take 3–4 working days.

Airbag24 tests the unit on the test bench, replaces defective components, deletes the stored crash data and carries out a functional test.

The sequence during removal is safety-relevant and is observed.

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 P56043318AB get to Airbag24?

It is sent as a parcel or via a UPS collection, which is booked for an extra charge. After the repair, UPS returns the unit from Airbag24.

Put the printed repair order into the parcel and pack the control unit shockproof.