auto is uh, well, auto and it does what it should. If you explicitly tell your car to keep the damn lights on, it should - keep the damn lights on.
What happens when you forget the headlights / dome light(s) on?
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MBWorld Fanatic!
Joined: Nov 2007
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From: NYC
2012 C300 4Matic
What happens when you forget the headlights / dome light(s) on?
Does the car automatically shut off the headlights if you forget them on?
How about the dome light(s)?
Does it turn them off after a set time or once the battery is low?
Can't seem to find the info, and the search function on this forum gives you a blank page half the time.
How about the dome light(s)?
Does it turn them off after a set time or once the battery is low?
Can't seem to find the info, and the search function on this forum gives you a blank page half the time.
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From: Alhambra/Irvine, CA
W203 Kompressor 6spd SS, Audi B5 S4
Out Of Control!!
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From: OC
a quarter mile at a time
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From: Irvine,CA
2007 C230 silver/black
lol i think the auto light thing is really trained me into a bad habit. I almost always forgot to turn off my gf's rabbit's headlights. I'm too used to the auto thing and by far it had been behaving well so didn't kill my battery yet.
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From: Long Island, New York
'05 C230SS 6MT, 1966 Triumph TR4a IRS, Shelby Cobra 427 Supercharged
The car will turn it off once the battery gets to a certian level. I know for sure the dome light will turn off, and I'm pretty sure the headlights will too.
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Joined: Jan 2008
Posts: 340
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From: South Fla.
06' C230SS
Does the car automatically shut off the headlights if you forget them on?
How about the dome light(s)?
Does it turn them off after a set time or once the battery is low?
Can't seem to find the info, and the search function on this forum gives you a blank page half the time.
How about the dome light(s)?
Does it turn them off after a set time or once the battery is low?
Can't seem to find the info, and the search function on this forum gives you a blank page half the time.
all cars batteries die when you leave lights on
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Thread Starter
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From: NYC
2012 C300 4Matic
Quick example: 1999 Mercury Mountaineer - and the electronics in that car are almost a decade old!
Last edited by acr2001; Feb 16, 2008 at 04:39 PM.
Thread Starter
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From: NYC
2012 C300 4Matic
Nothing against you guys or these forums, it's a great place filled with tons of useful information, but I have to say:
So many people around here give out info when they don't seem to know what they're talking about. So many people here are posting that the battery will die and apparently they're all wrong?
I can understand the idea that if you lave the headlights on they should stay the hell on, but it's common sense that the car should turn them off once the battery gets low, that way you have enough power left to start the engine later on and recharge.
"Just leave it in Auto" is good advice, but there are plenty of times when you want to use the fog lights, or only the marker lights and you might forget them on.
I'm not a big fan of American cars, and I do love my C class, but there are a lot of things Mercedes could learn from our old 1999 Mercury Mountaineer. A good example: Separate button for the front fogs, if you leave the button pushed then the front fogs come on whenever the headlights or auto headlights turn on. Then again maybe in Germany they only expect people to use the fog lights when there is actual fog, hence no auto option. Id still prefer an option have them come on with the headlights.
Last edited by acr2001; Feb 16, 2008 at 04:33 PM.
Senior Member
Joined: Jan 2008
Posts: 340
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From: South Fla.
06' C230SS
leave your lights on, come back and honestly tell me your battery isnt dead the next morning 
it happen to me, so are you saying that my electrical system has an error of some sort? i think not 
*EDIT* allow me to make it clear the first time- the battery was dead teh next morning when i tried to go to work and i realized my HL switch was turned on. batt had to be charged but recovered from the situation- so it obviously wasnt a def. batt because im still using it.
it happen to me, so are you saying that my electrical system has an error of some sort? i think not *EDIT* allow me to make it clear the first time- the battery was dead teh next morning when i tried to go to work and i realized my HL switch was turned on. batt had to be charged but recovered from the situation- so it obviously wasnt a def. batt because im still using it.
Last edited by 06c230hwd; Feb 16, 2008 at 08:34 PM.
Thread Starter
MBWorld Fanatic!
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From: NYC
2012 C300 4Matic
I know that I have heard from at least 2 people on these forums that the car will turn the lights off when the battery is low, but as I said in my previous post there is a lot of misinformation around here.
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From: Diamond Bar, CA
W206 PHEV AMG
leave the headlight on and the battery will be drained period. low beam might turn off, but the running lights stays on. (I say might because I don't remember or care to try) if you try the ignition the next day and there are some juice left it only means you caught it before it's completely drained. there is no feature that keeps the battery from getting drained.
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Joined: Jan 2008
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From: South Fla.
06' C230SS
where the hell you read that from
leave the headlight on and the battery will be drained period. low beam might turn off, but the running lights stays on. (I say might because I don't remember or care to try) if you try the ignition the next day and there are some juice left it only means you caught it before it's completely drained. there is no feature that keeps the battery from getting drained.
leave the headlight on and the battery will be drained period. low beam might turn off, but the running lights stays on. (I say might because I don't remember or care to try) if you try the ignition the next day and there are some juice left it only means you caught it before it's completely drained. there is no feature that keeps the battery from getting drained.
i had a good feeling there was no such feature! thanks for the clarification frank!
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From: Long Island, New York
'05 C230SS 6MT, 1966 Triumph TR4a IRS, Shelby Cobra 427 Supercharged
where the hell you read that from
leave the headlight on and the battery will be drained period. low beam might turn off, but the running lights stays on. (I say might because I don't remember or care to try) if you try the ignition the next day and there are some juice left it only means you caught it before it's completely drained. there is no feature that keeps the battery from getting drained.
leave the headlight on and the battery will be drained period. low beam might turn off, but the running lights stays on. (I say might because I don't remember or care to try) if you try the ignition the next day and there are some juice left it only means you caught it before it's completely drained. there is no feature that keeps the battery from getting drained.
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From: Bayarea, California
2003 C320 coupe/c450 in Feb 2016
i can confirm that interior lights turn off like after 15 minutes. but i'm not sure about headlights, never tried it. haha
Senior Member
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From: South Fla.
06' C230SS
coo coohaha.. no but really... i believe you!
and i dont think any of us are willing to test the HL's!
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From: Seattle WA
99 E320
interior lights have time out feature. the headlights are not part of any time out
unless your car has courtesy feature and still, that only includes fog/corner/tail.
leaving your door open and you should see them extinguish after about 10-15
mins. doing this with your headlights or parking lights switched *on* and they
will continue to stay on. turning your headlights off and exiting the vehicle and
the parking/fogs may stay on for 30 secs if feature activated.
unless your car has courtesy feature and still, that only includes fog/corner/tail.
leaving your door open and you should see them extinguish after about 10-15
mins. doing this with your headlights or parking lights switched *on* and they
will continue to stay on. turning your headlights off and exiting the vehicle and
the parking/fogs may stay on for 30 secs if feature activated.
Last edited by raymond g-; Feb 18, 2008 at 10:44 PM.
Junior Member
Joined: Mar 2007
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From: Daytona Beach, Florida
2007 CLK 500
My personal experience with my CLK and C is that they both died and the headlights did not cut off. In fact on my CLK they stayed on then the alarm went off right at I guess the last minute of power from the battery first at full volume normal pattern and died down to one tone whimpering out.
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From: OC
a quarter mile at a time
My personal experience with my CLK and C is that they both died and the headlights did not cut off. In fact on my CLK they stayed on then the alarm went off right at I guess the last minute of power from the battery first at full volume normal pattern and died down to one tone whimpering out.
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Joined: Mar 2007
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From: Daytona Beach, Florida
2007 CLK 500
