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Old Aug 11, 2020 | 06:48 PM
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Default Instrument cluster issues

As you all know when you open the C5 door the interior lights come on including the instrument cluster and the buttons on the doors. During day light hours once you start the engine these lights stay on except for the cabin lights - if it’s dark enough then all these lights come on when the headlights come on. Now in my car’s case everything works as it should except when I open the door the instrument cluster does not light up, also does not light up once started (during daylight time). Once the marker lights or headlights are turned on the instrument cluster lights works as they should.
All fuses are good - so please share some ideas or vendors that can correct this - thanks.

Last edited by BLUDICE; Aug 11, 2020 at 06:56 PM.
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Old Aug 12, 2020 | 07:11 AM
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So does no one have an answer, or am I not explaining the issue problem clearly, or am I crazy and not have a problem? Lol
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Old Aug 12, 2020 | 09:26 AM
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Just a thought. Suggest going to the DIC Options #4 (see owners manual) and make sure you have selected the options that you want concerning the lights.
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Old Aug 12, 2020 | 10:04 AM
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Question - does your instrument cluster light up when you open the door?
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Old Aug 12, 2020 | 11:20 AM
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Originally Posted by rrwirsi
Just a thought. Suggest going to the DIC Options #4 (see owners manual) and make sure you have selected the options that you want concerning the lights.
thanks but no solution found here.
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Old Aug 13, 2020 | 08:01 AM
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Did you check the dimmer to make sure its not tuned down all the way, simple just a suggestion.
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Old Aug 13, 2020 | 10:45 AM
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Instrument cluster, HVAC, Radio, Door Switches all light up when door is opened, the dimmer switch only works when running lights or headlights are on.
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Old Aug 13, 2020 | 01:31 PM
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Originally Posted by 6speedsteve
Instrument cluster, HVAC, Radio, Door Switches all light up when door is opened, the dimmer switch only works when running lights or headlights are on.
So do you have any clues as to why all these items lights up except the instrument cluster on my car - thanks.
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Old Aug 13, 2020 | 01:55 PM
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Not sure, you would need to do some searches, unless someone else on the Forum has had the issue before.
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Old Aug 13, 2020 | 02:23 PM
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Originally Posted by 6speedsteve
Not sure, you would need to do some searches, unless someone else on the Forum has had the issue before.
Actually I’ve not heard from everyone on here with this issue - I’ve looked hard at the search areas and not found anything. I suspect some car owners may have this issue and not realize they have a problem.
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Old Aug 15, 2020 | 07:30 AM
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There sure has been a bunch of people that have read this - but nothing they can share? It make me wonder if they are also looking for an answer to a similar issue. If so please share.
You know the instrument cluster should light up if you use the key fob the unlock the doors also the cabin lights and In my car the cabin lights come on as they should but not the instrument cluster. I’ve read on here the the ignition switch controls a whole bunch of things and can cause a lot of issues if it’s bad. Any thoughts?
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Old Aug 15, 2020 | 08:17 AM
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Any exterior lights out?

Another thought possibly is lighting timer, when you shut your drivers door do all the lights go out at once?

Mine is Cluster & HVAC both shut off at same time, Radio dims down, Interior lights shut off, & Door switches shut off
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Old Aug 15, 2020 | 08:44 AM
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Originally Posted by 6speedsteve
Any exterior lights out?

Another thought possibly is lighting timer, when you shut your drivers door do all the lights go out at once?

Mine is Cluster & HVAC both shut off at same time, Radio dims down, Interior lights shut off, & Door switches shut off
All exterior lights are good.
All interior lights/timers are working correctly except the instrument cluster lights.
Thanks
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Old Aug 15, 2020 | 09:24 AM
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Originally Posted by BLUDICE
All exterior lights are good.
All interior lights/timers are working correctly except the instrument cluster lights.
Thanks
My thought was that the relay that runs the timer sequence could be bad, or just the part of the timer relay for the IP
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