Logic of naming actuators in VW-group is simple it contains "N" + actuator number. The actuator number is unique. Here you can find fitting location, connectors and some basic information about actuators.

To our mind, actuators information is reference, so there is only simple search by number.


Audi A8 4E (2002 -)
Audi A6 4F (2005- )
Audi Q7 4L (2007- )
Audi A4 8K (2008-)
Audi A3 8P (2003- )
Audi Q5 8R (2009- )

Coolant shut-off valve -N279


Display group number 003


Display zone 1

Current operating status of auxiliary heater.

Possible readouts:

J Start

J Full load

J Part load

J Control pause

J Run-on

J Fault

J off


Display zone 2

Current operating mode of auxiliary heater.

Possible readouts:

J Additional heating

J Heating

J off

J Pump on


Display zone 3

Activation of heater coolant shut-off valve -N279.

Readout 100 = Valve is closed, is activated (current being applied) - small coolant circuit.

Readout 0 = Valve is open, is not activated (no current applied) - large coolant circuit.


Display zone 4

Activation of the combustion air blower -V6 (in percent).


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