Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Vent Mode

With the mode knob in the VENT position, the vent valve opens and air flows to the instrument panel outlet ducts.

With the mode knob in the BLEND position between the HEATER and the VENT modes, the vent valve moves to an intermediate range uncovering more of the opening to the instrument panel vents. This valve movement results in increased airflow to the vent nozzles and decreased airflow to the heater duct.