How to get radio stations to come in in my 2010 caravan

scanning for what?, not told ,AM, FM or SAT?
SCAN FAILING IS ANTENNA BAD.
(AT BEST) IT FELL OFF. THE WIRED CONNECTION MARKED ANTENNA
yes it does or FM radio will be dead. for sure!
some cars the connection is to windshield antenna
and then later windshield glass was replaced wrong
wrong glass or not plugged back in.
reading your service manual now
base radio only
SAT rec. is pin 37 roof antenna
FM rec is pin 75 ant.
with NAV or with out NAV
i will do NAV no. BOSE system factory
pin 81 window antenna AM/FM
pin 107 with NAV am/fm
as you cans see there are 4 options new
for RADIO head end and NAV choices.
we can not guess what is there.
now what you are scanning for.

FM need a good antenna, buT FM in the country side will be weak
or even dead, FM does not travel far at all ,even only 20 miles
AM we have super power stations that cover most the country.
I bet the RADIO is just fine.
it can be bench tested with a 1 strand of say 4 feet of wire for an antenna.
you posted about only a RADIO not CD and not AM
FM is short ranged, 88 to 108MHz. is that
no town told , but you can call your closest station and ask them there coverage, spec.? 50miles or 10 or? what ever.
or you can go to a 2nd car, test FM see if there is one strong station.
if not there there is none.
on home RADIO we use a roof mounted 30Ft high antenna, FM
and goes way father,.
in car that can not be done, most antenna amps in cars only increase noise.
is this your first car, or first ever FM radio.?
yes antenna's can fail even the ground, (it is 2 wire coax to fail)
the mount can corrode. the cable can be bad.
some have antenna in the wind shield glass, and some one puts in new glass with no antenna there well that fails hard.
FM is mostly a CITY BIG DEAL, no living in the sticks.
also there are tiny FM micro station,and those are weak.
only line get a FM map for you town, just like Cell phones but for FM.
radio. see what is there and its POWER/coverage.

Most likely the antenna lead has come unhooked from the back of the radio. AM stations will pick up with the internal working of the radio, but FM stations have to have a working antenna to work. Also make the antenna is tight to the vehicle .

No one uses AM radio any more.

I would look at the antenna connections ... you will need to remove the unit from the dash to get to the back of the radio. [Google removal of that specific radio for your vehicle]. You may be able to get your hand up under some dash boards to reach the back of radio?

The antenna conception is typically a round coax conductor that goes to a plug into the back of the radio.

Try moving the plug around while radio is on ... if you get signal pull out connector and clean contacts with rubbing alcohol. Test again and reinstall.

Hope this helps!

I BELIEVE THE FM PROBLEM IS IN THE RADIO, NOT RELATED TO OTHER WORK...HAVE RADIO TESTED, PULLED, AND REPAIRED/REPLACED

1. Connect the FM antenna and the AM loopantenna at the back of the unit. Rotate the AM loop for better reception.
2. Press AM/FM.
3. Tune a station by pressing TUNER+/-repeatedly until the desired station is found.Alternatively, you can press and hold thesame buttons down for about one second toactivate the automatic search function. Inthis mode the unit will automatically tunefrequencies until it finds a station.
4. Repeat step 3 to tune to another radio station.
5. Press AM/FMto select between FM and AM.Storing Radio Stations

The unit can store up to 40 radio stations (30 preset stations for FM and 10 preset stations for AM) in its memory. You can enter every single radio station yourself or the unit can store all available radio stations automatically in ascending order

Automatic Preset Programming
1. Press AM/FM to enter the AM/FM mode.
2. Press and hold AM/FM for two seconds to start automatic preset programming.
3. Radio frequencies will be browsed and radiostations stored automatically. When all the available radio stations are stored or all 40(30 preset stations for FM and 10 preset stations for AM) memory locations are full,the auto preset programming function will stop.

Manual Preset
1. Tune to a radio station (see "Manual tuning"for details).
2. Press MEMORY. While the Program Preset number is still flashing, input your desired preset number using the numeric buttons or press CH+/-, then press MEMORY to store it.

Retrieving Preset Stations
1. Press AM/FM to enter the Tuner mode.
2. Press CH +/- to search up or down for thepreset stations or directly press the numeric buttons.

Check the antenna connection where it connects to the stereo it may be loose or not in all the way.

Your antenna is not connected (at the back of the radio) or is shorted somewhere - AM comes in without an antenna pretty easily but FM doesn't.

this was common in the old days, if you realy want to listen to the am radio and you cant stand the static reving sound of your engin you may need resiter spark plugs and wires.