Airbag control unit with part number P68186649AA

What does the airbag control unit P68186649AA do?

The airbag control unit P68186649AA is the central control unit of the restraint system (SRS) for Jeep. It evaluates the signals from the sensors and decides in an accident, within milliseconds, which airbags and seatbelt pretensioners are triggered. After an accident it stores crash data and locks itself.

The system monitors its components continuously, even without an accident. The control unit shows faults via the airbag warning light in the instrument cluster.

The lock is lifted only by repairing the control unit.

Why does the control unit P68186649AA fail?

The most common cause: crash data stored after an accident, even if no airbag has deployed. A standard diagnostic tool cannot erase it. Other causes include ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data is stored even when the airbag has not deployed. It remains in the control unit and cannot be removed with usual diagnostic tools.

Ageing components and cold solder joints can cause contact problems that show up intermittently.

Moisture and corrosion at plug connections disrupt the contact, and voltage spikes, for example from a weak battery or jump starting, stress the electronics.

How can you tell that the P68186649AA is defective?

The airbag warning light lights up permanently or intermittently, and a fault message appears in the instrument cluster. The diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared.

The warning light reports the defect itself, so you do not have to search for it first. As long as the system is disturbed, airbags and seatbelt pretensioners may not trigger in an emergency.

Whether the light stays on permanently or only comes on intermittently says nothing yet about the cause. For that, the fault memory has to be read out.

Which vehicles is the P68186649AA fitted in?

The P68186649AA is fitted in these vehicles: Jeep Cherokee KK (2008-2012).

For classification, here is the list of vehicles recorded for this number:

• Jeep Cherokee KK (2008-2012)

Compare the part number on the label of the removed unit with this page. That only confirms that you have the right unit. Have the fault memory read out beforehand, because only that 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 P68186649AA work?

First have the fault memory read out and enclose the log. Then disconnect the battery before removing the control unit. Afterwards create a repair order online and send in the well-packed unit.

Airbag24 checks the unit on the test bench, repairs defective components, erases stored crash data and carries out a function test. Afterwards your own unit goes back 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 P68186649AA get to Airbag24?

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

Place the printed repair order in the parcel and pack the control unit shock-proof.