Fixed Loose Gas Cap.. CEL still on?
06-27-2009, 01:05 AM
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2009 C63
Fixed Loose Gas Cap.. CEL still on?
So I was driving around tonight and the loose gas cap message came on, so i was like 
, so I got out and fixed it. I noticed later that my CEL was on (I can't guarantee they came on simultaneously or the CEL came on later). By reading the gas cap it says it may cause CEL, but I just wanted to check if this is something I should be worried about? Does it really sometimes just take a while for the CEL to reset?
, so I got out and fixed it. I noticed later that my CEL was on (I can't guarantee they came on simultaneously or the CEL came on later). By reading the gas cap it says it may cause CEL, but I just wanted to check if this is something I should be worried about? Does it really sometimes just take a while for the CEL to reset?
06-27-2009, 09:59 AM
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Radio Flyer Big Flyer fully loaded with training wheels and NOS
I had the exact same problem the day i picked mine up from the dealership...i just took it to them and within 5 minutes i was back driving with a tightened gas cap and no CEL...good luck
06-27-2009, 11:07 AM
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2020 GLE450
This happened to me a few weeks back and I took it to the dealer. They said that it was a "software error" and updated the computer. After I got the car back and a few weeks later, I got the loose cap message again with a flassing fuel pump icon in the dash for about two minutes. It went away and has not returned as of yet.
If the CEL is on, take it in.
If the CEL is on, take it in.
06-28-2009, 01:54 AM
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2009 C63 AMG
Hi guys, I had that exact same problem and here is what they told me at the dealership:
Sometimes when you fuel your car, you get air bubbles in the gasoline. These bubbles will go into the fuel line to the engine where the pressure is monitored and get stuck in there. The fuel pipe will have the wrong pressure measured thus the computer thinks the fuel cap is not closed properly.
The manual did say that this will cause the CEL to turn on. The dealer changed something for me but I forgot what the part is... something inside the fueling system, and now it's fine. Hope this help!
Sometimes when you fuel your car, you get air bubbles in the gasoline. These bubbles will go into the fuel line to the engine where the pressure is monitored and get stuck in there. The fuel pipe will have the wrong pressure measured thus the computer thinks the fuel cap is not closed properly.
The manual did say that this will cause the CEL to turn on. The dealer changed something for me but I forgot what the part is... something inside the fueling system, and now it's fine. Hope this help!
