My 2002 Hyundai Elantra CD

Then 1, bulbs are burned out
OR 2, the wiring is faulty.

Testimonial: "thanx for the solution. took the car to a repair shop and was told that the wiring was faulty. had the car rewired."

Source: 2002 hyundai elantra radio and dome light not working

With the car on ground, break loose the drive-axle nut, and the wheel nuts , than jack up the car, support it properly, remove the wheel ,remove the axle-nut.
Remove the brake caliper assembly-- support it properly.
Remove the two bolts that hold the hub bracket to the Macpherson strut assemble, remove the lower arm ball joint and remove the steering tie- rod ball-joint attached to the hub bracket. That's it.Slide off the hub /with the bracket off the drive-shaft.
Follow steps backwards to assemble back.

Source: how to replace 2002 hyundai elantra hub and bearing

I had a flat battery and now need to remove the radio cd player to find the security pin which is apparently on the back of the radio. How do i go about this without spending heaps.

Source: how to remove the radio cd player from a 2005

Normally the Audio (Radio CODE) is noted in the owner's manual. If you don't have it, you must contact Hyundai Motor America and give them the Vehicle VIN number... they may then (possibly) be able to give you the CODE.

Source: I have a 2002 Hyundai Elantra, I changed the

check for any circuit brakers near the fuse box, if theres any of them reset them by introducing a paperclip in the small hole and press, you will hear a click.

Source: 2001 Hyundai elantra. Headlights, electric

get a good cd player not a stock one sorry best i can do

Source: Problem with CD player