Airbag control unit with part number 5C0959655AB

What does the airbag control unit 5C0959655AB do?

The airbag control unit 5C0959655AB controls the restraint system (SRS) of Volkswagen. It evaluates the signals from the impact sensors, selects in a crash within milliseconds the airbags and seatbelt pretensioners to be triggered, and monitors the entire system. It shows faults via the airbag warning light.

Monitoring runs throughout every journey. So that the system works reliably in an emergency, the control unit checks the connected components continuously.

After an accident, the unit stores crash data and locks itself. The lock is only lifted by the repair.

Why does the control unit 5C0959655AB fail?

The most common cause is crash data stored after an accident, even without a triggered airbag. In addition there are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 erases it during the repair.

The other causes relate to the electronics and their connections. Components age, solder joints can be cold, and moisture or corrosion affects plug connections. Voltage spikes occur, for example, with a weak battery or a jump start.

How can you tell that the 5C0959655AB is defective?

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

Then airbags and seatbelt pretensioners may not deploy in an emergency. The warning light should therefore be taken seriously and clarified promptly.

The warning light shows the defect, even though it does not name which part is affected.

Which vehicles is the 5C0959655AB fitted in?

The airbag control unit 5C0959655AB is fitted in these vehicles: Volkswagen Jetta 6 (2010-2018).

The list below shows the vehicles stored for this part number.

• Volkswagen Jetta 6 (2010-2018)

Check the part number on the label of your removed unit against this page; that way you can be sure it is the correct unit. Have the fault memory read out beforehand, because only the result 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 5C0 959 655C, 5C0959655E, 5C0959655F, 5N0 959 655 AC 702.

How does the repair of the 5C0959655AB work?

First have the fault memory read out and enclose the log with the unit. Then disconnect the battery; only after that remove the control unit. Next, create a repair order online and send the unit in well packed.

Airbag24 checks the unit on the test bench, replaces defective components, erases the 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 5C0959655AB get to Airbag24?

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

Put the printed repair order in the parcel, and pack the unit shock-proof.