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PostPosted: Fri Feb 01, 2019 11:07 am 
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Joined: Mon Sep 11, 2017 4:45 pm
Posts: 50
Car Model: Saab 9.5 build end 2004
Denso screen problems after battery disconnect?

Does anybody know anything about this?

I have been talking to a Saab Shop and they claim that the Denso has a software fault. When you disconnect the Battery it happens, and the screen with the clock is no longer available. Now I have disconnected the battery several times over the years and I never had this happen. I did however disconnect the Battery this time for a small electrical repair, after that the Denso had the problem.

Is anybody aware of this? And if so what is the solution?

Saab 9.5 2005 model

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PostPosted: Sun Feb 03, 2019 10:22 am 
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Joined: Mon Sep 11, 2017 4:45 pm
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Car Model: Saab 9.5 build end 2004
OK I discovered more. Via the Saab Club NL I found the following info. It is, apparently, a known problem and seems to be a software fault.

If you disconnect the Battery it happens. You can no longer set the clock and there is a stripe through the GPS symbol. However the Navigation still works so there seems to be a GPS signal.

It is a software bug in all Denso units from 2005 till 2010. US Cadillac’s apparently have it too and apparently the Corvette C6 has it too. According to the poster is GM working on it.

If I find out more, I post.

Still, I be interested to hear if anybody has the problem or has a solution or other information.

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PostPosted: Wed Feb 06, 2019 12:09 pm 
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Joined: Mon Sep 11, 2017 4:45 pm
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Car Model: Saab 9.5 build end 2004
OK found more

https://www.spirent.com/blogs/positioning/2018/january/gps-rollover-week

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PostPosted: Sun Feb 10, 2019 12:45 pm 
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Joined: Mon Sep 11, 2017 4:45 pm
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Car Model: Saab 9.5 build end 2004
Found more, following cars have the same problem:

Corvettes, Cadiillac STS's, Tahoes, and Suburbans are all affected.

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