A non-functioning heater motor, often referred to as the blower motor, can become a safety issue that needs to be addressed right away. On a Jeep Wrangler, the blower motor is necessary to the air conditioning, heating and defrosting systems. It is located under the dashboard on the far end of the air duct on the passenger's side. It is easy to access and can be removed in minutes. If the blower motor seems to have stopped working altogether, verify that the electrical connections are securely connected and the switches are in the "on" position to avoid buying parts you do not need.
Open the hood and remove the negative battery terminal from the battery. Set it aside where it will not get damaged or accidentally fall back against the battery.
In the seating compartment, locate the blower motor under the dashboard on the passenger's side. It will be located on the far end of the duct near the outer kick panel.
Remove the electrical connector from the back of the blower motor housing and lay is aside. Tuck it up under the dash so it does not get stepped on or broken while the blower motor is out of the Jeep.
Locate the blower motor retaining tab on the housing and release it. Rotate the motor counterclockwise until the motor comes free of the air duct. Pull it straight out of the duct work.
Insert the new blower motor into the air duct and rotate it clockwise until it locks into position. The retaining tabs will lock when it is all the way in.
Reinstall the electrical connection on the blower motor housing. Apply a small amount of dielectric grease on the pins for added protection against water or other contaminants.
Reinstall the negative battery cable onto the battery and tighten with a wrench. Test the blower motor by turning the ignition key to the "on" position and turning on the blower motor.
