Defrosting the windows, Rear window defroster, Activating/deactivating air-recirculation mode – Mercedes-Benz GLK-Class 2012 Owners Manual User Manual
Page 126: To activate/deactivate air-recirculation mode, To switch the rear window defroster on/off, Switches the rear window defroster on/off, Activates/deactivates air-recirculation mode, Climate control, Operating the climate control system
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