This is a common problem with this Mountaineer(all). It's due to bad soldering in the Radio. I found a guy on eBay that repaired it cheap. Now my over head display in my 2001 Explorer stopped showing the temp and compass heading because of bad soldering also. There's a answer for that fix on this site..
While we are talking about bad soldering there's a problem with the heater blend door motor on these cars that stops working because of bad soldering also. Easy fix once you pull it out..Just bad circuit boards...
fuel gauge not working and power windows and radio.2004 mercury mountaineer.
just a bad circuit board. common problem with the display burning out
behind the radio, to the left
have radio replaced or repaired
i reconnected my battery of mountaineer 2005 and radio is asking for code, i wasnt able to find it any where...how to solve this issue
it doesn't go down.
www.modifiedlife.com
i have mercury mountaineer 2004 i remove first the cover around the radio is a press ion when you remove you have to take 4 screw 2 in left 2 in right them put in front slow them disconnected the harness and antenna .
Check out this Web site. www.shareamemory.com. It will give you some insight to a common problem with Ford / Mercury radios. Bad solder job in radio. Must remove and resolder conection.
You need a special tool. Take it to most businesses that installs radio,s and they should have the tool.
Its on the right side of the hood. It runs under the hood and through the firewall to the back of the radio
If it is working what needs to be fixed? Assume, the lack of display. Not sure but I think the radio has two separate fuses, one for the radio one for it's display, check the fuses I have had similar problem but not sure if it was with my Topaz