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Discussion Starter · #1 ·
In June, my STS broke down at my cottage and was towed to an American car specialist (I live in Finland, no Cadillac dealers anymore)

Finally, I got the car back. It was the stupid electric steering column lock, which I found lying around at my dealership.

Now, though, the map is completely blank. But the clock and GPS is are working? The GPS and clock have a lot in common, but my GPS clock thinks it’s 2/28/2001... I have set a completely different time, when the clock adjust didn’t use to work. Do the GPS/Clock effect the map?

The map used to work well, without GPS nor clock, though.

Any ideas?
 

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2006 STS V8 AWD, '95 Ford Ranger
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American Cadillacs don't have the electric steering column lock. Ours is mechanical so can't help you there. Your GPS/clock problem is the result of a firmware problem in the NAV unit. There is a fix for newer years but it duds some of the steering wheel buttons on older models. Look at some of the older posts on this problem. Make sure you have the map disc in the NAV unit. If that doesn't help try the universal electrical fault solution with a complete reset. Disconnect the leads from the battery. Touch the two leads together for a minute or so and then reconnect them to the battery with minimum sparking/arcing. This may wake up the NAV. There is an internal fuse in the NAV that may be blown. Also there are two fuse blocks under the rear seat that you might check.
 

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Discussion Starter · #3 ·
Thanks for replying. The whole unit isn’t dead. Just the map now.

To Put it simply:
Before electric steering lock fix, GPS and Clock DIDN’T work.

Now, GPS and Clock DO WORK, but only map is blank.

I’ve tried entering the map DVD in the top hole many times, but no luck (It only shows faint country borders)

I checked that the NAV firmware isn’t OC80.
 

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2006 STS V8 AWD, '95 Ford Ranger
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Your GPS problem was a firmware problem. They must have removed power working on the steering lock which rebooted the NAV, which restarted the clock, and gave the GPS back its mind. Rebooting it again with the battery disconnect may rejuvenate your NAV. It's all spelled out in a couple of hundred posts in the STS forum. It's worth a try. A clumsy disconnect and reconnect of the battery introduces all kinds of electrical noise into the electronics of this car. Some modules may interpret this noise to be data or commands and do all kinds of crazy things. A nice, clean reboot can clear all this. It's the first thing to try before diving in and tearing it all apart. If that doesn't work try scanning for trouble codes with a GM TECII scanner which can interrogate all modules. Most generic scanners can read engine codes only.
 

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08 STS 1SG HUD ACC F55 AWD, 08 STS 1SG Platinum HUD ACC F55 RWD
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You are lucky you have an 08. Year 05 to 07 have no fix. Go to this forum thread
Unable to adjust clock--2008 STS wi Navigation

Then go to post 1016 and download the correct file. Follow the instructions. Date will be correct and time will be displayed (you may have to adjust the time the normal way). I suggest you read all posts newer than about 650 to get an understanding of this problem.

As far as the map problem - Do you have a map disk? Never seen this before. Maybe damaged map disk? Good Luck.
 

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Discussion Starter · #6 ·
Your GPS problem was a firmware problem. They must have removed power working on the steering lock which rebooted the NAV, which restarted the clock, and gave the GPS back its mind. Rebooting it again with the battery disconnect may rejuvenate your NAV. It's all spelled out in a couple of hundred posts in the STS forum. It's worth a try. A clumsy disconnect and reconnect of the battery introduces all kinds of electrical noise into the electronics of this car. Some modules may interpret this noise to be data or commands and do all kinds of crazy things. A nice, clean reboot can clear all this. It's the first thing to try before diving in and tearing it all apart. If that doesn't work try scanning for trouble codes with a GM TECII scanner which can interrogate all modules. Most generic scanners can read engine codes only.
Thank you. I will try this.

Last time I disconnected the battery, the GPS and Clock broke
 
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