Airbag control unit with part number 5N0959655P

What does the airbag control unit 5N0959655P do?

The airbag control unit 5N0959655P controls the restraint system (SRS) for Volkswagen. It evaluates the signals from the crash sensors, decides within milliseconds in an accident which airbags and seatbelt pretensioners to trigger, and monitors the system continuously. It indicates faults via the airbag warning light.

After an accident, it stores crash data and locks itself.

Monitoring covers the entire triggering system of the restraint system.

Why does the control unit 5N0959655P fail?

The most common cause is stored crash data after an accident, even without a triggered airbag; a normal diagnostic tool cannot erase them. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

Other causes at a glance:

• aged electronic components inside the unit
• cold solder joints on the circuit board
• moisture and corrosion at plug connectors
• voltage spikes, for example from a weak battery or a jump start

How can you tell that the 5N0959655P is defective?

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

As long as these signs persist, airbags and seatbelt pretensioners may not trigger in an emergency. Such a finding should therefore be taken seriously and checked promptly.

The light reports the fault as soon as the system detects it, and thus serves as the first warning sign.

Which vehicles is the 5N0959655P fitted in?

The control unit 5N0959655P is fitted in these vehicles: Volkswagen Tiguan 5N Facelift (2011-2018) and 5N (2007-2011).

The assignment to the individual models is shown in the following overview.

• Volkswagen Tiguan 5N Facelift (2011-2018)
• Volkswagen Tiguan 5N (2007-2011)

Compare the part number on the label of the removed unit with this page; then you know it is the correct unit. Have the fault memory read out beforehand; only this finding 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 5N0 959 655 AA, 5N0 959 655 AB 005, 5N0 959 655 AE, 5N0 959 655 J, 5N0 959 655 Q, 5N0 959 655 R.

How does the repair of the 5N0959655P work?

First have the fault memory read out and attach the log, then disconnect the battery and only afterwards remove the control unit. Next, create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the control unit on the test bench and repairs defective components. Airbag24 then erases the stored crash data and carries out a function test. The unit then 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 5N0959655P get to Airbag24?

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

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