C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

w203 - My car is moody - Lights and sunroof weird problem

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Old Sep 4, 2012 | 08:07 PM
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w203 - My car is moody - Lights and sunroof weird problem

First of all, greetings guys!
I seem to have a huge problem with my w203 ( avantgarde model, year 2000 ).
I guess it's a bit moody since, from time to time, my interior lights do not work and so does the sunroof. It just stops working, but if i leave it alone for a few hours it works just fine.. then stops working after some hours or the next day ( and the cycle goes on ) I might mention that either all of them work at the same time or none of them does.
I thought at first it was the light sensor ( at night it wouldn't even turn on my parking lights when set to AUTO but worked fine when turned on manually ), but i don't know anymore.

Thanks for taking the time to read this..
Any ideas ?

Btw, sorry for my english, i might have not explained properly.
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Old Sep 4, 2012 | 08:56 PM
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phister's Avatar
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From: fort worth, tx
06 C230 SS 6spd
check your fuses. you might have a loose wire or exposed wire grounding out. if its not that then it could be worse from the front sam or the modules.
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Old Sep 5, 2012 | 06:03 AM
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Thank you for your answer, i'll check those..
i so hope it's not that, the car worked perfectly today..
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Old Nov 12, 2013 | 05:21 PM
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From: SF Bay Area
C55 AMG, 300D-T & Karmann Ghia
I had exactly this result after working around the trunk fuse box. With some miscommunication with a friend while we were trying to solve the non-working sunshade, some fuses where pulled with the key at position 1. Ever since, my interior lights and sunroof do not work and the car no longer shines exterior lights when locked.

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