lower tailgate unscrew two screws in the side remove tail light lens remove the 3157 bulb replace using dialectic grease on terminals reverse assembly.
It has one air filter for the engine.
If you follow the hose before the filter it will lead to some cone shape plastice piece that could probably be located somewhere in the fender or grill
The cabin air filter access is behind the glove box/support. Make sure you pay attention to which way the arrow on the old filter is pointing so you install the new one correctly.
Could be a dirty cabin filter.
Purchase a Purolator Cabin Filter for your car, it comes with complete instructions.
Its inside/behind the glove compartment. Squeeze the sides pull the unit towards you and remove it.
The Transmission oil filter is on top of the transmission. You can see it when looking into the engine compartment. It is to the left of the Air cleaner air box. It will look just like a oil filter.
check your coolant level. if its full, might be a plugged heater core.
How do I change my air filter on my 2005 Hyundai Elantra?
The fuel tank air filter on a 2007 Hyundai Santa Fe is apparently not to be confused with the fuel tank filter that is located in the fuel tank. The Fuel tank air filter is supposed to be located inside the car on the left side in the back of the car underneath a plastic door marked with a GAS Pump picture stamped on it. I found the door and opened it. However, I didn't see anything that looks like an air filter.
To reach the cabin air filter on a Hyundai Elantra the glovebox has to be removed. The filter is located behind the glovebox and can be easily replaced once the glove box is removed.
replace air filter on a 2004 Honda civic