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Main display fault
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canegnafu   
Sat Jan 31 2026, 02:14pm

Joined: Oct 24 2014
Member No: #1914
Location: Rome
 Hi everybody
suddenly and for no specific reason the display of my C6 3.0 HDI went "black", with no access to any function, showing the message: Please Insert Upgrade CD

Is there anybody who already had this problem ?
Is there any chance I can fix the problem by myself?

Thanks a lot in advance
Max
MGmike   
Sat Jan 31 2026, 05:44pm

Joined: May 21 2017
Member No: #3151
Location: South Queensferry
 I would say the hard drive has failed in the head unit.

There's a member supplied tutorial on how to convert it to a flash drive - Click Here -

Good luck
Tjensen   
Sat Jan 31 2026, 10:36pm

Joined: Jul 17 2012
Member No: #954
Location: Bergen
 If you instert an update CD it will reinstall the system and repair/block out bad sectors in harddisk. This might be all you need. I did it many times before the HDD gave up after many years. Then I got a cheap HDD from Amazon. (but a flash drive is more elegant and fast)
canegnafu   
Mon Feb 02 2026, 03:20am

Joined: Oct 24 2014
Member No: #1914
Location: Rome
 Thanks for the prompt reply but.....is there any chance to find online the UPGRADE CD?
C6Dave   
Mon Feb 02 2026, 11:25am


Joined: Oct 01 2009
Member No: #1
Location: Northumberland
canegnafu wrote ...

Thanks for the prompt reply but.....is there any chance to find online the UPGRADE CD?

You could try this from France: - Click Here - or ask your local Citroën Dealer if they can get you a copy
Website
canegnafu   
Mon Feb 02 2026, 11:54am

Joined: Oct 24 2014
Member No: #1914
Location: Rome
 Thanks C6Dave!
I've just placed the order......3 days for priority mail......I'll let you know...
Tjensen   
Tue Feb 03 2026, 11:47am

Joined: Jul 17 2012
Member No: #954
Location: Bergen
 The operating system/update CD has a part number and can be ordered. It was also included in the packages of new maps (but this was a generic version and some C6 things are not included, but must be handled manually afterwards). I think the updated version is still 8.31.
AndreSMCXXMC6   
Thu Feb 05 2026, 04:25pm

Joined: Sep 09 2011
Member No: #615
Location: Groesbeek
 To get the unit to re-initialize completely you have to short circuit the reset points on the unit I believe
canegnafu   
Sun Feb 08 2026, 09:10am

Joined: Oct 24 2014
Member No: #1914
Location: Rome
AndreSMCXXMC6 wrote ...

To get the unit to re-initialize completely you have to short circuit the reset points on the unit I believe


Sounds interesting......but how to "short circuit"??


Anyway....the upgrade CD is on its way (....they say)
 

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