My cooling fans are not coming on.the fuse is good.where is the relay switch located for cooling fan? i think it might be bad.thanks.

Either the temp sensor is bad, or the relay is bad. or the fan motor is bad. Or you have a blown fuse.
Look for fuse first.... To test if fan motor is bad disconnect the connector to the fan and jumper it to the battery.if it spins it's good. the other two. use a component locator to find their location and replace. they are inexpensive. Temp sensor is in the cooling circuit (radiator...maybe next to thermostat) the relay will be in a fuse box under the hood.

The relay in engine compartment fuse box.
For its exact location and wiring diagram,click the link below:----Hyundai Sonata cooling fan not working http://schematicsdiagram.blogspot.in/2012/02/hyundai-sonata-cooling-fan-not-working.html
---------------This will help.Thanks.

Because there is no supply to the fan , it is not working. So you need to check the fan with a direct link to test , is working check the RELAY box for the fan relay, next check on the thermistor, the control circuit of the temperature controller to trigger the fan relay. Also check on the fuse to the relay unit.
The AC cooling must be checked only after this circuit is working as a hot engine will not give a good result. cehck the gas pressure, check the pumping pressure to confirm the compressor.
Also the eveporator, condenser, pressure switch must be checked independantly.

First check fan fuse and relayand switch.You can change relay with another with the same part number to see if that relay is bad.Then check power to and from fan switch if switch has power coming in and not going out then your switch is bad. Replace switch.If fuse and relay are good check for power at the fan and if you have power at the fan then that means that your fan motor is bad,Replace fan motor.HOPE THIS HELPS!!!

fuse relay is under the hood next to the battery. location is (5FL) 60 amp yellow fuse.

Hi,

Fan Relay switch is stuck open. This of course assumes your temperature sensor is working appropriately. Which I assumed since you seem to know that the engine is running hot.

Replace the fan relay switch. The relay switch is tripped when the temperature sensor tells the computer the engine is too hot.

Until you get the relay switch replaced, you can either by-pass the relay switch and directly connect the fans to the battery, or turn on your A/C ALL the time and use it at a minimum setting. This will keep the cooling fans running at all times.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Here are the cooling system diagnostic steps...First does the cooling fan kick on (with engine hot)? If not, check the fuse, if good then check the thermoswitch in the radiator (it's about an inch and a half in diameter located on the lower part of the radiator with two wires ) by disconnecting the wires and touching them together (again, with engine hot...at least 190 degrees) if the fan comes on, you have a bad switch. If not connect a 10 gauge jumper wire from the battery to the fan itself (there are three terminals,,, one high, one low and ground). With power direct from the battery (and a ground wire, if necessary) fan should run... if not replace the fan assembly... if it does run then you have a bad cooling fan relay. It will be located above the fuses on the fuse block... Hope this helps...;-)

there is a relay panel under the hood with your engine cooling fan relay inside, a 12 dollar part, sounds to me like this relay may need to be replaced. There will be a diagram in your owners manual telling you exactly where it is located in your car. It should be noted that this relay has to be activated before the current reaches any fuse inside the cars fuse panel so your fan fuses can all be good but if the relay is not working the engine cooling fans will not come on. Be careful of dealerships I had one tell me it was a 3000 dollar wiring problem when it was only the relay.

the cooling fans are run by a relay it's located in the junction box. check this. there is also a thermoatic sensor located near the fans next to radiator. the fans should free spin when the engine is off this is a good indiacator that it's not the fan themselves. if the relay checks out(run engine and switch the fan relay with the a/c clutch relay when the engine reaches 180 degrees you will feel the upper radiator hose get hot the fans will turn on a short time later iof they don't it's the temp sensor near the radiator if they do it's a bad relay...please rate this thanks