Engine light came on (@.@)
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Joined: Sep 2008
Posts: 91
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From: Queens, Ny
2009 C300 SPORT
Engine light came on (@.@)
Hey guys, don't know what's wrong was out in the city last night, left the car with a valet got it back during the ride back. ENGINE LIGHT poped on 
And eng Temp was reading above 80 which is middle marker but not all the way up about 5 white markers above 80!
Called merc but not appointment till Tuesday, so am scared to drive the car, what do you think i should do...btw car's an 09 not even 7k on it yet!
And eng Temp was reading above 80 which is middle marker but not all the way up about 5 white markers above 80!
Called merc but not appointment till Tuesday, so am scared to drive the car, what do you think i should do...btw car's an 09 not even 7k on it yet!
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Joined: May 2009
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From: Queens, N.Y.
2008 Arctic White C300 4-Matic Sport
I would at least ask the valet management to see any cameras they have watching the lot to make sure nobody was foolin with ur car. Give them date and time and ask to see the tape if u can. Don't let them know right away ur check engine light is on just tell them u think somebody might have been in ur car when they shouldn't have been. I wouldn't drive the car around unless I definitely had to until u bring it in.
Good luck
Good luck
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From: Orlando, FL
2026 AMG GT63 Pro
I wouldnt worry....our cars run 85-90 degrees celsius...
I say it's some sort of minor mechanical issue such as faulty sensors etc...
if something major was wrong you would know
I say it's some sort of minor mechanical issue such as faulty sensors etc...
if something major was wrong you would know
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From: Homeless
'20 Targa 4 DD, ' 18 Volvo S60 T6
Try and reboot the ECU via the pedal to the floor and key in 2nd position - or something like that (it's described in the forum somewhere)...or whatever...see if it returns.
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2026 AMG GT63 Pro
furthermore, the process referenced above only resets the driver-adaptive throttle and transmission to baseline settings.
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Thread Starter
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Joined: Sep 2008
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From: Queens, Ny
2009 C300 SPORT
Well the valet wasn't like a take your car and put it in a garage, he had it parked right infront of the resturant, Second the car has recently been to Merc about 3 weeks ago for an early oil change and all fluid tap off.Am hoping it's a faulty sensor, i just took it for a ride, everything runs normally even the temp gauge is back to around normal 80deg (middle). But the light's still on, Am going to try not to use it much and wait for Merc to take it Tuesday.
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MBWorld Fanatic!
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From: Southeast
2008 C300 Sport, RWD, US
When my "check engine" light came on, I took it to the dealer to see if it was something serious. The first thing he did was unscrew the gas cap, then put it back on. That didn't clear the light, but thought it might.
They were a little slow that day and was able to go ahead and take the car in for service. Turned out to be some kind of cam magnets. It was covered by warranty.
They were a little slow that day and was able to go ahead and take the car in for service. Turned out to be some kind of cam magnets. It was covered by warranty.
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Joined: Dec 2007
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From: Seattle
C-300, XC70, Wrangler
When mine came on, I stopped the car, got out the manual, and read up on the light. It's not about coolant or oil, but it does mention either gas or emissions. It also says "drive to the nearest MB dealership for service."
Mine was an Exhaust Cam sensor problem, fixed under warranty.
Mine was an Exhaust Cam sensor problem, fixed under warranty.
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From: NYC
2012 C300 4Matic
The light can come on if your gas cap wasn't installed tightly enough (the W203 manual says that the low fuel light would also be flashing in that situation to make it more obvious, not sure if that's been changed).
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
All modern car owners should carry a cheap $50 OBDII/CANBUS scanner in the glove box. Then you can read codes and will know why the car threw a CEL.
Likely something minor or the car will go into limp mode & give you warnings.
If it is not overheating & is not low on fluids then just drive it. The thermostat on these cars opens at 87 Deg Celsius so that's approx normal temp.
Likely something minor or the car will go into limp mode & give you warnings.
If it is not overheating & is not low on fluids then just drive it. The thermostat on these cars opens at 87 Deg Celsius so that's approx normal temp.
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All modern car owners should carry a cheap $50 OBDII/CANBUS scanner in the glove box. Then you can read codes and will know why the car threw a CEL.
Can anyone suggest a good model of OBDII/CANBUS scanner for our car?
Thanks,
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From: Queens, Ny
2009 C300 SPORT
Well gas cap was on tight, even had to put gas in today. So made sure, but seems when these warning ligths go on only dealer can take it off, cause it's still on. Anyway got an earlier appt for this afternoon for a drop off, will keep everyone posted when i get it back tom morning on the cause. Thanks all for keeping me cool! 
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2008 C300 Sport, RWD, US
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2008 c300 [] 1969 Chevelle SS [] 2010 Camaro
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Thread Starter
Member
Joined: Sep 2008
Posts: 91
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From: Queens, Ny
2009 C300 SPORT
Okay everyone, took the car in yesterday to sort out that engine light problem...Well after an Hour in Merc got it back nothing serious, but he did say it was caused by the gas cap being loose, Hey i didnt mind as long as they did a full sweep of the car okay...But in this merc service area there's an observation deck where owners can go there's a big two way glass mirror that over looks the entire garage where the cars are...Now i've been keeping on eye on mine, and during that hour there were total of 5 guys at once! looking at my car and the computer read outs, now that scared me a little, if it was just a loose gas cap, do you really need 5 guys to figure that out? I don't know maybe it's just me, but do you think there not telling me something?
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From: Southeast
2008 C300 Sport, RWD, US
Andy,
Yeah, that doesn't sound right to me either.
I know the first thing my service writer did was check the gas cap and only wrote it up for service when that didn't work. Maybe it was the reverse for them. They didn't check the easiest and most obvious.
In case they just disabled the "check engine" light, you might want to loosen the gas cap and see if the light comes on.
Yeah, that doesn't sound right to me either.
I know the first thing my service writer did was check the gas cap and only wrote it up for service when that didn't work. Maybe it was the reverse for them. They didn't check the easiest and most obvious.
In case they just disabled the "check engine" light, you might want to loosen the gas cap and see if the light comes on.
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From: NYC
2012 C300 4Matic
