Wash Mode

WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

When the control knob on the control stalk of the multi-function switch is depressed to the momentary WASH position for more than about one-half second with the wiper system operating, the SCM sends an electronic washer switch status message to the EMIC, the EMIC relays an electronic washer switch request message to the TIPM, then the TIPM directs battery current and ground to the washer pump/motor unit. This will cause the washer pump/motor unit to be energized for as long as the switch is held closed (up to approximately 10 seconds) and to be de-energized when the control knob is released.

When the control knob is depressed to the momentary WASH position while the wiper system is operating in one of the DELAY interval positions, the washer pump/motor operation is the same. However, the TIPM also overrides the selected delay interval and operates the wiper motor in a continuous low speed mode for as long as the control knob is held depressed, then reverts to the selected delay interval several wipe cycles after the control knob is released. If the WASH switch is held closed for more than approximately 10 seconds, the TIPM will suspend washer pump/motor operation until the knob is released for about 2 seconds, then cycled back to the WASH position.