Airbag control unit with part number P68186180AC

What does the airbag control unit P68186180AC do?

The airbag control unit P68186180AC controls the restraint system (SRS) of Dodge. It processes the readings of the crash sensors, determines in a collision within milliseconds which airbags and seatbelt pretensioners trigger, and monitors the system permanently. After an accident it stores crash data and locks itself.

The monitoring covers all connected components. If the unit detects a fault, it reports it via the airbag warning light in the instrument cluster, so that the warning is visible in the vehicle.

The sensors are evaluated in milliseconds, because in a collision there is no time for queries. The protective effect of the airbags in an emergency depends on this.

Why does the control unit P68186180AC fail?

Stored crash data after an accident is the most frequent cause, even when no airbag has triggered, and a normal diagnostic tool cannot erase it. Added to this are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example with a weak battery or a jump start.

Crash data stored in the control unit's memory after an accident remain there even when no outside damage is visible. A normal diagnostic tool cannot remove them, and that is precisely why the fault persists.

The other causes work more over time. Components age, solder joints can go cold, and moisture attacks the plug connections. Voltage spikes from the vehicle electrical system also stress the electronics.

How can you tell that the P68186180AC is defective?

The airbag warning light in the instrument cluster stays on permanently or lights up intermittently, an error message appears, the diagnostic tool receives no response from the control unit, and the fault memory cannot be cleared. Airbags and seatbelt pretensioners may then fail to deploy in an emergency.

The warning light is the hint the vehicle gives itself. Whether it burns permanently or only flashes intermittently makes no difference to the assessment, because in both cases a check is needed.

If the diagnostic tool cannot connect to the control unit, or the fault memory stays unchanged, that is a further warning sign that must be taken seriously. The exact cause is only established by reading out.

Which vehicles is the P68186180AC fitted in?

The control unit P68186180AC is fitted in these vehicles: Dodge Avenger Saloon (2007-2011) and Saloon Facelift (2011-2014). The list helps you make an initial assessment of which of these vehicles belong to your unit.

The vehicles in detail:

• Dodge Avenger Saloon (2007-2011)
• Dodge Avenger Saloon Facelift (2011-2014)

Compare the part number on the label of the removed unit with this page. This only ensures that you have the correct unit. Have the fault memory read out before removal as well, because this log shows whether the control unit itself is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 56054100AA, 56054100AB, 56054100AC, 56054100AD, 68029112AA, 68029112AB.

How does the repair of the P68186180AC work?

First have the fault memory read out and attach the log. Then disconnect the battery before removing the control unit. Next create the repair order online and send the unit in well packed. At Airbag24, processing takes 3–4 working days as a rule.

The battery must be disconnected before removal. This step comes first in the sequence for safety reasons.

At Airbag24 the unit is examined on the test bench, one defective component is replaced, and then we erase the stored crash data and carry out a function test. Then your own unit goes back 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 P68186180AC get to Airbag24?

You can send the control unit P68186180AC as a parcel or book a UPS collection for an extra charge. Airbag24 sends the repaired unit back by UPS.

Enclose the printed repair order with the parcel and pack the control unit shock-proof.