Fans dont' come on when you turn key on but does when you start

Do you have headlights or other signs that your battery is in good condition other than the radio? Ever hear the hissing before when you shut off the car? Like an interior fan in the a/c? Possibly corroded battery connections or a bad ground in the starting system.

Do you leave your A/C button "on" when turning off car? On most cars, the cooling fans come on automatically (regardless of engine temp.) when the a/c system is on (a/c switch and fan speed), with key on. Other possibility is your coolant temp. sensor is defective, but your temp. gauge would show inaccurate readings.

Test for stuck relay. With everything off but key on, feel the tops of relays for a warm of hot one.

Defective fan clutch, if it has one. With a cold engine only, try spinning the fan blade by hand. If it does not turn freely, the fan clutch is defective. Warning: When the engine is hot, the fan can turn on by itself with the car not running and keys are NOT in the ignition.

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try turn the key to the position all the lights comes on dont start engine as soon as turn key on press gas pedal to the floor n release 3 times

usually if you turn the ignition key on and off 3 times it will reset it but dont start it just turn key on off on off on off.

one fan is for a/c and the other is for the rad.the a/c fan will come on if the a/c is turned on or if the heater mode is on defrost.this is normal operation.turn a/c off and change mode to anything but defrost.now no fans should be on.

Heater fan or coolant fan ?

The cooling fan is controlled by tempature relay.

Replace the tempature relay or fan relay.