Blower Motor Switch: Description
WARNING: This page is about a different car, the 2004 Dodge Sprinter. However, it is still accessible from the selected car via links, so may be relevant.
The blower motor is controlled by a thumbwheel-type blower motor control, mounted in the A/C-heater control. The switch allows the selection of four blower motor speeds with the ignition switch in the On position.
NOTE:
The blower motor will operate only at the lowest speed when the Residual Engine Heat Utilization (REST) function is selected, regardless of the blower speed setting on the A/C-heater control.