Airbag control unit with part number 5N0959655M

What does the airbag control unit 5N0959655M do?

The 5N0959655M is the airbag control unit of the restraint system (SRS) for Volkswagen. It processes signals from the crash sensors, decides within milliseconds in an accident which airbags and seatbelt pretensioners fire, and monitors the system continuously.

A fault is reported via the airbag warning light in the instrument cluster.

An accident causes crash data to be stored and the unit to lock itself.

Why does the control unit 5N0959655M fail?

The most common cause at the 5N0959655M is a record of crash data from an accident, even if no airbag has fired. Normal diagnostic tools cannot erase this data. In addition, aged electronics, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes come into consideration.

The crash data records what the unit registered during the event. Which cause applies to a particular vehicle only becomes clear on inspection.

The other causes develop over a longer period and act on contacts and components until the unit displays faults.

How can you tell that the 5N0959655M is defective?

The airbag warning light in the instrument cluster stays on permanently or lights up from time to time. At the 5N0959655M, an error message and a missing connection to the diagnostic tool are added, as well as a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to fire.

The warning light shows the fault even when the vehicle drives normally in everyday use.

Each of these signs is a reason to have the restraint system checked.

Which vehicles is the 5N0959655M fitted in?

The 5N0959655M is fitted in these vehicles: Volkswagen Tiguan 5N Facelift (2011-2018) and 5N (2007-2011).

The vehicles for this part number are listed in the overview below.

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

Compare the number on the label with this page. This only shows that the unit fits. Whether a defect lies in the control unit or a plug or cable is the cause is revealed solely by reading out the fault memory, which you arrange beforehand.

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 5N0959655M work?

First have the fault memory read out at the 5N0959655M and attach the log. Then disconnect the battery and remove the control unit, before you create a repair order online and send in the well-packed unit. Airbag24 checks it, replaces defective components, erases the crash data and carries out a function test.

For checking, repairing and testing at Airbag24, you should expect 3–4 working days as a rule.

The sequence protects the restraint system during removal.

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 5N0959655M get to Airbag24?

The 5N0959655M reaches Airbag24 either as a parcel or via a UPS collection, which you can book for an extra charge. After repair, the unit comes back by UPS.

The printed repair order goes into the parcel, and the unit must be packed to withstand shocks.