Airbag control unit with part number P56054155AE

What does the airbag control unit P56054155AE do?

As the control centre of the restraint system (SRS) in Jeep, the airbag control unit P56054155AE processes the signals from the crash sensors. In an emergency it decides within milliseconds whether airbags and seatbelt pretensioners are triggered. After an accident it stores crash data and locks itself.

At the same time it checks the connected components and their wiring. If it detects a fault, it reports it via the airbag warning light in the instrument cluster.

Why does the control unit P56054155AE fail?

Most often the cause with the P56054155AE is stored crash data after an accident, even if no airbag has deployed. Added to this are aged electronics, moisture and corrosion at plug connections, and voltage spikes.

A normal diagnostic tool cannot erase the crash data, so simply reading out the fault memory does not help in such cases.

The electronics themselves are subject to wear. Solder joints can become cold, and moisture attacks the plug contacts.

Voltage spikes, for example with a weak battery or when connecting a jump start, place additional strain on the circuits.

How can you tell that the P56054155AE is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, an error message is displayed, or the diagnostic tool gets no connection to the control unit P56054155AE. If the fault memory also cannot be cleared, that likewise points to a fault. In an emergency, airbags and seatbelt pretensioners may then possibly not trigger.

The light is the most visible sign, and whoever notices it should act quickly. Reading out the fault memory brings clarity about the source of the fault.

Which vehicles is the P56054155AE fitted in?

The control unit P56054155AE appears in these vehicles: Jeep Cherokee KK (2008-2012).

Here is the overview:

• Jeep Cherokee KK (2008-2012)

Comparing the part number on the label of the removed unit with this page ensures that you have the correct unit. Whether the control unit is defective or whether a plug or cable is the cause only shows up in the fault memory. Have it read out beforehand.

For the same vehicles, we also repair control units with the part numbers 5189278AA, 68025632AK, P04896129AF, P04896129AG, P56038973AE, P56038973AF.

How does the repair of the P56054155AE work?

You first have the fault memory read out and enclose the log. Then disconnect the battery, and only after that remove the control unit P56054155AE from the vehicle. Processing at Airbag24 usually takes 3–4 working days.

You create the repair order online, then pack the unit well and send it in. Airbag24 tests it on the test bench, repairs the defective components, erases stored crash data and carries out a function test. Afterwards your own unit is returned 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 P56054155AE get to Airbag24?

You send the control unit P56054155AE as a parcel, or for an extra charge book a UPS collection. Airbag24 also returns the control unit P56054155AE by UPS.

Put the printed repair order into the parcel. Make sure the unit is packed shockproof.