Airbag control unit with part number P68148046AA

What does the airbag control unit P68148046AA do?

The airbag control unit P68148046AA is the central control unit of the restraint system (SRS) in the Jeep. It evaluates the signals from the crash sensors, decides in an accident within milliseconds on the deployment of airbags and seatbelt pretensioners, and monitors the system continuously. After an accident it stores crash data and locks itself.

The unit works in the background and accompanies every journey. Besides the sensors, it checks wiring, the power supply and the ignition elements of the airbags. If it detects a fault, it creates an entry in the fault memory and shows it via the airbag warning light in the instrument cluster.

You will not notice the lock after an accident during normal driving. It only becomes apparent when you read out the control unit or connect a diagnostic tool.

Why does the control unit P68148046AA fail?

The most common cause is crash data that remains in the memory after an accident, even if no airbag has deployed; a normal diagnostic tool does not remove it. In addition, aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start, come into consideration.

Crash data is created as soon as the unit registers an accident, regardless of whether an airbag or seatbelt pretensioner has deployed.

The other causes apply generally to electronics in the vehicle. Solder joints on the circuit board can lose contact over time, moisture and corrosion disturb signal transmission at the plugs, and voltage spikes add further strain to the electronics.

How can you tell that the P68148046AA is defective?

A defect shows itself through the airbag warning light in the instrument cluster, which lights up permanently or intermittently, through a fault message in the instrument cluster, through a missing connection from the diagnostic tool to the control unit, or through a fault memory that cannot be cleared.

Typical signs at a glance:

• The airbag warning light stays on permanently or comes on intermittently.
• A fault message appears in the instrument cluster.
• The diagnostic tool finds no connection to the control unit.
• The fault memory cannot be cleared.

If these signs appear, the airbags and seatbelt pretensioners may in an emergency not deploy. Therefore have the system checked promptly rather than ignoring the light.

Which vehicles is the P68148046AA fitted in?

The control unit P68148046AA is fitted in these vehicles: Jeep Cherokee KK (2008-2012). The assignment applies to exactly this part number.

You will find the matching vehicles here:

• Jeep Cherokee KK (2008-2012)

First compare the part number on the label of the removed unit with this page. This ensures that you have the right unit in front of you. Also have the fault memory read out beforehand, because only the log 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 5189278AA, 68025632AK, P04896129AF, P04896129AG, P56038973AE, P56038973AF.

How does the repair of the P68148046AA work?

First have the fault memory read out and enclose the log; then disconnect the battery and only afterwards remove the control unit. Online you create the repair order and send the unit in well packed. At Airbag24 the processing usually takes 3–4 working days.

Keep to this order, because it protects you when working on the vehicle. The control unit is only removed once the battery has been disconnected.

At Airbag24 the team checks the unit on the test bench and replaces defective components. Stored crash data is deleted, followed by 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 P68148046AA get to Airbag24?

You send the control unit to Airbag24 as a parcel, or book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back to you by UPS.

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