Airbag control unit with part number P68148038AB

What does the airbag control unit P68148038AB do?

The restraint system (SRS) control in vehicles from Jeep is handled by the unit P68148038AB. It evaluates the signals from the crash sensors, determines within milliseconds in an accident which airbags and seatbelt pretensioners are triggered, and monitors all connections.

The system is in continuous operation. Detected faults are stored in the unit's memory and shown via the airbag warning light in the instrument cluster.

After an accident, the control unit secures the crash data and locks itself.

Why does the control unit P68148038AB fail?

Crash data stored after an accident is the most common cause, even if no airbag has deployed. A normal diagnostic tool cannot erase it. Other causes are aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Electronic components lose reliability with age. Cold solder joints and corrosion on contacts have a similar effect: the signal then arrives irregularly.

Voltage spikes belong to the list as well. A weak battery or a jump start can stress the control unit so that it no longer behaves correctly.

How can you tell that the P68148038AB is defective?

Signs include an airbag warning light that lights up constantly or intermittently, a fault message in the instrument cluster, no connection between the diagnostic tool and the control unit, and a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

These signs occur individually or together:

• Airbag warning light in the instrument cluster lights up constantly or intermittently
• Fault message in the instrument cluster
• Diagnostic tool gets no connection to the control unit
• Fault memory cannot be cleared

The warning light is a signal you should take seriously.

Which vehicles is the P68148038AB fitted in?

Several vehicles are on record for this part number. The control unit P68148038AB is fitted in these vehicles: Jeep Compass MK (2007-2010) and MK Facelift (2011-2016).

Here is the overview:

• Jeep Compass MK (2007-2010)
• Jeep Compass MK Facelift (2011-2016)

The label comparison only checks the identity of the unit. It does not establish whether the control unit is defective. For that reason, it makes sense to have the fault memory read out before you send it in; only then will it become clear whether the control unit or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers P68186642AD.

How does the repair of the P68148038AB work?

First have the fault memory read out and enclose the log, then disconnect the battery and remove the control unit. Next, create a repair order online and send the unit off packed up. Airbag24 usually processes the work in 3–4 working days.

This order is binding, because safety comes first when removing the unit.

Airbag24 checks the unit, replaces defective components, erases stored crash data and runs a function test before returning your own unit.

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 P68148038AB get to Airbag24?

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

The printed repair order goes into the parcel. A shock-resistant box protects the control unit during transport.