Airbag control unit with part number P68148029AA

What does the airbag control unit P68148029AA do?

The airbag control unit P68148029AA is the central control unit of the SRS for Jeep. It evaluates the signals from the crash sensors and decides within milliseconds in an accident on the triggering of airbags and seatbelt pretensioners. After an accident it stores crash data and locks itself.

It monitors the components of the system continuously. It shows faults via the airbag warning light in the instrument cluster.

For this the unit needs intact cables to the sensors, to the seatbelt pretensioners and to the power supply.

Why does the control unit P68148029AA fail?

The most common cause at the P68148029AA is stored crash data, even if no airbag has fired. Other causes are ageing components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data stays stored in the unit after an accident. Normal diagnostic tools do not erase it; Airbag24 erases it as part of the repair.

The other causes at a glance:

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

Which of these applies is established by the test in the individual case.

How can you tell that the P68148029AA is defective?

A defect in the P68148029AA shows through the airbag warning light, which lights up permanently or flashes intermittently. Then the airbags and seatbelt pretensioners may not be able to deploy in a crash.

A fault message in the instrument cluster may accompany it. If the diagnostic tool cannot establish a connection to the control unit, or the fault memory cannot be cleared, that is a further sign of a defect.

The warning light reports the fault as soon as the system detects it. Anyone who sees it lit should therefore have the vehicle checked promptly, even if it can still be driven normally.

Which vehicles is the P68148029AA fitted in?

The P68148029AA is fitted in these vehicles: Jeep Wrangler JK (2007-2018).

Below are the vehicles assigned to this part number:

• Jeep Wrangler JK (2007-2018)

Use the label on the removed unit to check whether the number matches this page. That tells you no more. Having the fault memory read out before you remove the control unit, however, shows whether the unit itself is defective or whether a connector or cable is causing the fault.

For the same vehicles, we also repair control units with the part numbers 68398609AB, P68003421AB.

How does the repair of the P68148029AA work?

First have the fault memory of the P68148029AA read out and attach the log, then disconnect the battery and remove the control unit. Afterwards create a repair order online and send the unit in; processing at Airbag24 takes 3–4 working days as a rule.

Airbag24 tests the unit on the test bench, repairs the defects on the components, erases stored crash data and carries out a function test. After that the unit goes back to you.

The stated period applies only to this work at Airbag24, not to removal, shipping or your own fault finding.

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 P68148029AA get to Airbag24?

You send the control unit P68148029AA as a parcel, or have it collected from you for an extra charge. After the repair Airbag24 sends it back to you by UPS.

Pack the control unit shock-proof and enclose the printed repair order.