2003 santa fe radio not working

hi,

get the radio out and check to see if the antenna is plugged in or loose, try a different antenna , if it does the same thing when you plug the new antenna in then get another radio from ebay or junkyard. How to remove Hyundai Santa Fe radio
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cuts out ?
well, all FM radios cut out for.:
1: weak station.
2: stereo can not be held in properly( can be bypassed on most RAD , pick mono)
3: AGC drop out, same as #1

on better radios (RTM) you can defeat these default features.
set the FM to mono channel mode, and now you hear all stations.
also kill the AGC mode. this allows you to hear
the station. and static or both. like a Marconi radio of days of old.
modern radios are programmed to blank weak stations.
tis a fact. im a tech and tuned these features, for 50 years.

ok the fix,
1: move closer to station
2: get a better antenna (vast choices)
3: go to station and turn the gain knob up and get arrested by FCC.

the operator guide in the glove box , covers time set.
all radios do that.
and if not normal, the antenna is broken or fell off the rear of radio.

if got static switch to FM ,
many AM stations, broadcase to am and fm same content.
so use FM. its static free. (by design) but does fade sooner.
you can in fact hear AM station 12,000 miles away it night
called super stations, 50,000 watt stations. ive done this many time.

did you try another car, in same spot , and same station?
are you in under ground parking?

i would get the alternator checked, sounds like its leaking ac current which can also kill the battery

Do you like the CD? Without removing the radio and taking it apart...you can try a pair of needle nosed pliers. The rubber/fabric curtain over the slot should give you just enough room to get the tips in there and gently pull it out. Or if you happen to know a surgeon that has a pair of hemostats.

car dealers lie and lie and lie...now you know.  Can they replace the radio with the cheaper radio from the Sonata or Tuscon?  Call the area manager and complain.  Or you can burn mp3 cd's that hold about 120 songs each.

Pull out the antenna lead that goes into radio and see if its corroded.

no fmm signal and am static more than usual antenna is disconnected

I would look for a ground that is inadequate.
If any part of this is operating essentially without shielding due to a bad ground, then cell towers, a radio or TV station transmitter, CBs, land mobile radio, amateur radio - any of these can inject enough signal to drive modern electronics completely bananas.
The onboard electronics used for just about everything that is remotely controlled by switches generates a ton of digital garbage and can interfere with anything.

The kind of problem you are experiencing started when we stopped using vacuum tubes 50 years ago operating at high voltages and started using semiconductors that use much lower voltages.

A tech with a common multimeter should be able to locate the missing ground connection without too much trouble.