My check engine light is on and the tech at auto zone said that was the problem .what and where is the cooling fan relay . ineed to know where it is ?

Did you have the computer reset? Usually parts places like Advance, Auto Zone, or others have a thing they can read codes and reset them. If it keeps coming back then more checking needs to be done. Maybe the relay is damaged?

SOUND LIKE ENGINE OVERHEATING,CHECK COOLANT LEVEL MAKE SURE YOUR RADIATOR FULL OF ANTIFREEZE.IF YOUR COOLANT OVERFLOW JUG IS EMPTY COOLANT LEVEL IS LOW.NEED ADD MORE COOLANT TO OVERFLOW UNTIL COOLANT STAY AT FULL COLD MARK. DONT OVER FILL COOLANT OVER FLOW JUG.IF COOLANT OKAY ENGINE OVERHEATING REPLACE THERMOSTAT.MAKE SURE ENGINE COOLING FAN IS WORKING IF YOU COME TO A STOP CAR SITS FOR A LITTLE WHILE START OVERHEATING THE COOLING FAN NOT TURNING ON , BECAUSE COOLANT FAN FUSE BLOWED OR YOU HAVE BAD RELAY,THE ENGINE COOLANT TEMPERATURE SENSOR FAULTY.IF YOU HAVE THE CLUTCH TYPE COOLING FAN, MAKE SURE WHEN TURNING CLUTCH FAN WITH HAND COOLING FAN SHOULD HAVE RESISTANCE WHEN HOT.IF CLUTCH FAN FEEL WOBBLY AND LOOSE REPLACE IT.TAKE VECHICLE TO AUTO ZONE OR ADVANCE AUTO PARTS OR ANY AUTO PARTS STORES THEY WILL CODE SCAN CAR FREE AND GIVE YOU THE CHECK ENGINE LIGHT TROUBLE CODE TO SEE WHAT CAUSING CHECK ENGINE LIGHT TO TURN ON.

Turbo Radiator Fan

The radiator cooling fan is a variable speed electric motor driven fan. The radiator fan assembly includes an electric motor, fan blade, and a support shroud that is attached to the radiator. The radiator fan is serviced as an assembly (fan motor/fan/shroud).

The variable speed radiator fan is controlled by the Powertrain Control Module (PCM) by way of a Pulse Width Modulated (PWM) signal. The duty cycle ranges from 30% for low speed operation then ramps-up to 100% for high-speed operation. This fan control system provides infinitely variable fan speeds, allowing for improved fan noise, A/C performance, better engine cooling, and additional vehicle power.

To control radiator fan operation, the PCM looks at inputs from:

Engine coolant temperature
A/C pressure transducer
Ambient temperature
Vehicle speed
Transmission oil temperature (automatic transmission only

HENCE CHECK THE PCM

replacing the thermostat is exactly what i would have suggested for your vehicle for the overheating issue. try this,with the engine running at operating temperature,check to insure that the cooling fans coming on when the engines gaining temperature. your cooling fan may be going bad and not coming on when needed,in this case it may be a bad cooling fan sensor,or just a bad cooling fan altogether.with the engine running after you've driven the car until it gets warm,open the hood and look visually at the cooling fan to insure it's running{the engine fan} in front of your radiator. if it's not running {fan} check in the main fuse box under the hood for a bad engine fan relay 1st if no bad relay,then check for a bad engine fan motor.with the key switch in "off"position try to spin the engine fan manually by hand. if it does spin by hand it still may be a bad fan motor. or bad fan sensor.do you have a check engine light on? if so you can have it code read at any auto zone or advance auto for free.this may be of great assistance to you if the check engine light is on. hope this helps and thank you for choosing fixya.com

unplug the fan jump the conector with twelve volts if it comes on you need too do some extensive testing starting with the fuse and relay try turning on the a/c. the ac and coolant temp sensor control the fan if it douesnt come on repalce the fan chances are it will and you will probly need a auto tech too find the fault in that circuit if it is not the fuse go there first then the relay you probly dont know how to check them heres a quick trick swop it with onother one you knows works from another component see if it come on

check your sensor that controls the cooling fans.may need to be replaced.

Take/Tow your vehicle to an authorized Hyundai dealership and pay the diagnostic fee... they will tell you exactly what the problem is and the cost of parts/labor to fix it... at least this way you'll know what the problem is and what's required to fix it.

Sounds like a short in the wiring, or a bad fan motor drawing too much current. Check the wiring for shorts, if none are found, replace the fan motor.

ok ,generally on this car the fan relay is located in fuse box near the battery car

If the fuse is blowing there is too much resistance in the cooling fan moter. Replace JUST the cooling fan motor and the fuse. The A/C always turns the cooling fan ON when turned on. That is why the A/C messes up when the fan motor is bad. Replace the fan motor and the A/C problem will be fixed too. :)