Heater doesn,t work. Controls on dash sometimes light up & sometimes doesn,t. All of my fuses are good. It seems to act up mostly in the morning. Sometimes if I turn my head lights on my gauges quit working. I turned my head lights off & my gauges started working again. I have a Jeep Grand Cherokee Limited. If anybody can tell me what to do,it would be grately appreiceated. It,s been getting really cold lately & I would appreceate any help I can get . Charlie
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had this problem with my caravan recently all it took was checking fuses and if they are good take off your batt+ wire for 5 min and rehook it if that fails then check your dash cluster harness mine got pinched and shorted out most of the same things you have not working
These run of the same fuse,guessing youvechecked the fuse box,can sometimes blow for what seems no reason at all,replace the fuse if blown withw the right amp fuse,if it blows again check if all earths etc are clean and making good contact
Most likely your blend door. The door behind your dash that controls weather your A/c or your heater is working. This is assuming you still have a/c. Even if your car doesn't have a/c you will still have blend door so that you can stop heat from coming into car in summer.
all these circuits share some common fuses, check fuse #6 ( 10 amp ), fuse # 11 ( 15 amp ) & fuse #12 ( 10 amp ) all in the inside fuse box at the left end of the dash.....good luck
Sometimes the heater core get stopped up, especially if someone used stop leak in the cooling system. If the heater core stops up then you wont hardly get any heat. There are possibility's to like if the air doors and actuators under the dash, or the heater controls themselves act up. I would pull the two heater core hoses off under the hood and see if water will flow through the heater core. A water hose is good to use for this. If it is stopped up you wont get much flow. If being stopped up turns up to be your problem, then the heater core will have to be replaced to make the heater work like it should.
Test the dash first. Put key in hold down trip reset botton. Turn the key to on but don't start. Release the trip botton. Should turn on all dash lights & check for codes in the odometer. If getting codes reply back.
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