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Can someone help me locate the mirror heater relay on my 2001 ram 1500 sport 4x4? The owner's manual says it is in the fuse/relay block under the hood. I have checked none of the relays are marked for mirror heat. I checked all relays in the box for open load coils and all are okay. I then switched them around (they are all the same) and still have no heat. My dealer can't tell me where the relay is located. This is a Five Star rated service dept and they don't know where the mirror heater relay is located! Everything else electricial is working so the heaters must use there own relay. The indicator light for the heaters comes on so I am loosing power beyond the switch. I refuse to pay a mechanic to search for something . They should know the location of that relay. Help please. ???
 

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check in the fuse box inside the truck if it's not in the box outside
 

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According to my 2000 FSM, the relay, switch, logic and timer are all itegral to the heater/ac control unit. It also says that if any one of those components are faulty, you need to change the whole heater/ac assembly. :mad:
 

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It looks like F15 is the fuse but if it were blown i think you would have other problems?
If you need a used one try www.car-part.com
new ones are about $100 online ::)



The heated mirror switch, the heated mirror system indicator lamp, the heated mirror system solid state electronic control logic and timer circuitry and the heated mirror relay are all integral to the a/c heater control, which is located between the instrument cluster and the radio near the center of the instrument cluster bezel on the instrument panel. The heated mirror switch and the heated mirror system indicator lamp are visible in the lower left corner of the a/c heater control face plate (Fig. 2).

The heated mirror switch, the heated mirror system indicator lamp, the heated mirror system solid state electronic control logic and timer circuitry and the heated mirror relay cannot be repaired. If any of these components is damaged or faulty, the entire a/c heater control must be replaced. (Refer to CONTROLS/A/C HEATER CONTROL - REMOVAL)

The momentary-type heated mirror switch provides a hard-wired battery current signal to the heated mirror system electronic control logic circuitry each time it is depressed. In response to the heated mirror switch input, the electronic control logic and timer circuitry energizes or de-energizes the amber heated mirror system indicator lamp next to the heated mirror switch to indicate that the heated mirror system is turned ON or OFF. The electronic control logic and timer circuitry also energizes or de-energizes the heated mirror relay, which controls the feed of electrical current to the outside mirror heating grids.

The heated mirror system electronic control logic and timer circuitry is programmed to turn the heated mirror system OFF automatically after about fifteen minutes of operation. If the heated mirror system is turned ON a second time following an initial time-out event during the same ignition switch cycle, the heated mirror system electronic control logic and timer circuit is programmed to turn the system OFF automatically after about five minutes , When the electronic control logic and timer circuit detects that a programmed time interval has elapsed, it will automatically de-energize the heated mirror system indicator lamp and the heated mirror relay. The heated mirror system will also be turned OFF if the heated mirror switch is depressed while the system is turned ON, or if the ignition switch is turned to the OFF or Accessory positions.
 
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