I've had my C for over 6 months now and have figured out most everything about how it works inside and out...except, I just discovered something I never noticed before and you may want to check to see if your C does the same thing.
My car is parked in my garage, hence I have no need to lock it at night. When I park it for the evening the lights do their dance whereby after closing the car door they stay on for about 15 seconds and then slowly fade off starting from the rear to the front both exterior and interior. About 15 minutes after leaving the car I stepped into the garage while it was pitch black and noticed a very small glow of light from the interior.
The glow was coming from the tiny lights around the 2 radio knobs and the fast forward, seek, rewind and CD entrance lights, and they all remained on for about 15 minutes. This has probably been going on ever since I bought the car but it was the first time I went into the garage when it was totally dark. I had simply missed the light switch when entering the garage and that's what caused me to discover that the inside of the car still had these lights on. I cannot find any controls that will take care of just these radio related items and although it's probably not hurting the car, I find it a waste of battery power, not to mention that 15 minutes is a long time for these to stay on when all other lights have been off for at least 15 minutes. One caveat, if you lock your car, all the lights including the 3 radio lights mentioned above, do go out in about 15 seconds. Check yours out and please let me know if it's just my C that does this.
I haven't noticed this myself but then again at this point I try not to "look" for anything else LOL. I will check it out later when it gets dark.
I do however (I'm not sure) think I may or may not have a problem with my welcome mat lighting.
About 2 months ago my family walked out to our car from a relatives house on a pitch black street (new development and no lights) My son LOVES the welcome mat, he's 6. Every time he sees it he would stop me from opening the door so he could look at it until it shut off. Well when we walked out the lights came on then as we started walking toward the car it seemed to abruptly shut off before we even got close to the car. Later timing it all the welcome lighting was shutting off in about 10 seconds. Now I never timed it or cared before but when it shut off so obviously quickly that we had previously experienced I looked into the manual to see if it was a setting or something. It says its supposed to stay on 25 seconds or until you open the door physically which was the operation we were used to; thus why it stood out to me shutting off in less than half the time.
It doesn't always shut off quickly. It seemed it would work properly (stay on the whole 25 seconds) after I drove the car. Intermittent. Could be coincidence? So I bring it up to the dealer. They take it in first time (now with all the other problems with my car and an 2 hour roundtrip to my dealer I wouldn't have bothered about it had I not had other problems already so I took it in and asked them to look at it) They could not duplicate problem they say. My car goes back in a second time for my other remote issues so I bring it up again. They duplicate it this time and tell me it was a door sensor they fixed and all is good. I go to pick up my car and when they go to show me it works its completely dead LOL (no lighting or response when I approach the car at all)
I take it home anyway and when I get home now its magically working again. Seemed good a few days (I'm not really checking or conscious of it all the time, its not a huge deal to me again in the scheme of everything else wrong with my car, I just thought important to note in case of future problems that might be related to it all)) But still back to randomly shutting off abruptly sometimes again.
Everyone: How does your welcome lighting function? Does it shut off after 10 seconds or does it stay on until you open the doors? Does it sometimes shut down early? Maybe its just some type of normal operation. I was never conscious of it until that one night when it so obviously left us in the dark :-)