Ram Trucks 2014 ProMaster Commercial - Owner Manual - Manual (Page 183)

• Hot Ambient Temperature.
• Blower at Maximum speed.
• In case of hot ambient temperature, the recirculation is
closed (opened for a minute each 15 minutes so the air
can be changed) to improve the vehicle cooling.
Rear Window Defrosting
Press the Rear Defrost button to activate heated rear
window defrosting.
This function switches OFF automatically after about 20
minutes or when the engine is turned OFF. It is not
switched on automatically the next time the engine is
started.
If equipped, press the Rear Defrost button to activate
defrosting of door mirrors and heated nozzles.
NOTE: Do not affix stickers to the inside of the heated
rear window over the heating filaments, to avoid damage
that might cause them to stop working properly.
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UNDERSTANDING YOUR INSTRUMENT PANEL 181