Infinit m35 navigation system cutting out

If your 2005 Cadillac STS is displaying "TheftLock" on the navigation and radio screen after replacing the battery, it means that the anti-theft system has been activated. Here are the steps you can take to unlock the system:
1. Turn the ignition key to the "On" position. Don't start the car, just turn the key to "On" position.
2. Wait for the "TheftLock" message to disappear from the navigation and radio screen. This may take up to 10 minutes.
3. Press and hold the "1" and "4" buttons on the radio simultaneously for several seconds until "000" appears on the screen.
4. Use the "TUNE" knob to enter the code that was provided with the vehicle's owner's manual. If you don't have the code, you will need to contact a Cadillac dealership or a certified mechanic to retrieve it for you.
5. Once you entered the correct code, press the "AM/FM" button to unlock the radio and navigation system.

If all doesn't work, it's time to contact a Cadillac dealership or a certified mechanic to help you sort it out.

Oddly enough something similar recently happened to my 2009 650i recently purchased. The system would intermittently cut out and restart, turning on the radio even with another source selected or radio off. No idea if there is a short or software issue causing it, but it started when I put the navigation DVD in and tried to use it. Took the DVD out and restarted the system, problem hasn’t returned. I’ve read about others having similar issues with the navigation system causing the radio/idrive to cut out as well. It’s a long shot, but worth posting so others don’t spend money chasing a problem solved by using your smartphone instead of the car’s navigation.

Is it the Navigation unit in the trunk that has gone bad? Or has your display unit given up? You can find plenty of Navigation units and display screens on ebay.

If it's just the display you can purchase a replacement screen. Search 2000 acura tl navigation screen or Navigation Display on ebay. you'll find plenty of them there. The real fun is removing your old one, to replace with the new one you bought to fix the problem.

To remove and replace the screen, you need to remove everything below it first. Search youtube videos and you'll find some very detailed instructional videos on how to do it. It's not for the faint of heart, or the mechanically inept...

I've done it, and YES.... you need to removed all of that stuff, in that exact order, in order to be able to get to the two lower bolts that hold the screen in place. There is no short cut.

Helpfull hint... before you install your new replacement screen, be sure and write down the serial number of the unit, which is printed on the back side of the assembly. You just might need it some time in the future (like when you need it to retrieve a code from Acura USA, to make your radio and nav unit work after disconnecting the battery)

https://www.youtube.com/watch?feature=player_embedded&v=7PPyaN2fs30

If your screen is ok, but your nav unit is broken, you can buy one of those on eBay as well... a lot easier to install... open the trunk, remove two cables, and four screws, and replace.

Yes -I would check the fuses first when any electrical problem happens -cheers Denny

look into a radio repair shop or just get a after market radio installed at a audio store best buy-etc

I would call the dealer to see if this is the norm.

check the fuses

The Navigation system DVD has failed. You can order the load/play mechanism for it from China. (http://alibaba.com) This is where I found the replacement for my system.This is not a hard repair to make. Cost is between $60 and &120 for the part. Alpine and the dealer will want your first born to replace it.

Had the same problem...hit CONFIG...then Vehicle on the left side...when the Vehicle screen
shows all the info on languages....hold your finger on the clock in top right corner. The clock
adjust screen should appear. I could never get the clock adjust screen because I was just
touching the time...you have to keep your finger on it until the screen comes up. Hope this helps.

Gary
Virginia

The same thing happens with my 2005 Jeep.