If and when
Frequently asked questionsChecking vacuum generation
Note
The average air pressure of the earth's atmosphere at sea
level is 1013 mbar and decreases steeply as the altitude
increases (approx. 100 mbar/1,000 m altitude). Local and time
fluctuations also influence vacuum generation.
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Starting conditions for auxiliary heater, supplementary heater mode
Terminal 15 (ignition) on
Engine speed > 600 rpm
Coolant temperature < 72 °C
Ambient temperature < 5 °C
Reserve fuel level not reached
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Removing and installing relay and fuse carrier behind dash panel, RHD
vehicles
Removing
–
With ignition switched off, disconnect earth cable from
battery
→ Chapter.
–
Remove dash panel
→ General body repairs, interior; Rep. gr.70.
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