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Volkswagen Golf Mk7 Service & Repair Manual: Starting conditions for auxiliary heater, supplementary heater mode

This page lists every condition for supplementary heater mode: ignition on, engine speed above 600 rpm, coolant below 72°C, ambient temperature below 5°C, reserve fuel not reached, and no crash shut-off.

Terminal 15 (ignition) on
Engine speed > 600 rpm
Coolant temperature < 72 °C
Ambient temperature < 5 °C
Reserve fuel level not reached
On-board network manager not active
No crash shut-off
No event entries blocking start procedure
Has been put into service
Supplementary heating function activated in multi-function display (MFD)
  Note
The A/C button has no influence on the supplementary heater mode.

    Questions & answers

    Starting conditions for auxiliary heater, supplementary heater mode — Volkswagen Golf Mk7

    What conditions activate Golf Mk7 supplementary heating mode?
    Terminal 15 on, engine speed >600 rpm, coolant <72°C, ambient <5°C. The heater supplements the engine's heat output during cold starts.
    Starting conditions for auxiliary heater, auxiliary heater mode
      Auxiliary heater coded in Gateway Reserve fuel level not reached No crash shut-off ...

    Notes for vehicles with start-stop system
    Observe the safety precautions for vehicles with a Start/Stop system → Chapter. The following abort conditions deactivate the ...