C-Class GAS/FUEL Filler CAP (issues & problems) Thread
Super Member
Joined: Sep 2002
Posts: 549
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From: Canada
2002 C240 Classic
fuel filler cap
help. i cannot close my fuel filler. the cap does not go on it anymore. what can it be. has anyone had this problem? any suggestions. it looks fine, nothing broken just won't fit on it and close properly.
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From: Ohio
2010 C300 4matic
I think I've heard of this problem before too. Try doing a search and see if you find anything. I think you have to do something with the clips on the cap. I guess they can move out of place and then it won't fit right. 
Senior Member
Joined: Jun 2002
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From: Vancouver, BC
2017 GLA 250 4Matic
You guys ever notice the fuel cap is attached to the car via a flimsy, stringy, piece of rubber elastic? That piece of rubber looks like it will crack and snap over time.
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From: VA
14 ML350 4MATIC
Super Member
Joined: Sep 2002
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From: Canada
2002 C240 Classic
well, the check engine light came on yesterday along with a red display in the dash saying loose filler cap. i went to the dealer and he fixed it in two seconds. just aligned the white plastic tabs with the metal ones and it snapped right in. he told me the light will go away once you drive. well, it hasn't. how can i reset it myself? disconnect the battery? what do i have to do to set up my windows and everything if i disconnect it????
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Member
Joined: Dec 2001
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From: Washington D.C. area
190 2.3 and C320
I had the same problem one evening at a gas station. Look inside the gas cap and you will see two white flanges that rotate at the center of the cap. Those white flanges should be aligned with two locking spaces at the edge of the cap. When I had the problem, I found the white flanges had come out of alignment. Just snap the flanges back in place--that's what I did--and the gas cap should close on the filler hole.
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From: Ohio
2010 C300 4matic
Originally posted by antonio
he told me the light will go away once you drive.
he told me the light will go away once you drive.
They could have reset it, but that requires writing up a ticket and taking it into the shop and hooking up the computer. It was much easier for them to give you the 2-second fix and get you on your way. But don't worry, it will go away.
Super Member
Joined: Sep 2002
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From: Canada
2002 C240 Classic
oh sweet. i just took it out for a spin tonight and the light is gone. thank god!!! i'll post if it reappears. thanks everyone for the speedy and informative answers. THIS FORUM ROCKS!!!!!!!!
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From: Toronto, Ontario, Canada
on another note, that cord that attaches the cap to the car bugs the hell out of me.. its just barely long enough to let you slip the cap to the holder/hanger in the fuel filler door..
but there isnt enuff clearance between the hanger and the gas tank opening IMO.. i hate it when i put the nozzle in and it knocks off the cap from the hanger, banging it against the body panel
but there isnt enuff clearance between the hanger and the gas tank opening IMO.. i hate it when i put the nozzle in and it knocks off the cap from the hanger, banging it against the body panel
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From: Ohio
2010 C300 4matic
Originally posted by pokerFACE
but there isnt enuff clearance between the hanger and the gas tank opening IMO.. i hate it when i put the nozzle in and it knocks off the cap from the hanger, banging it against the body panel
but there isnt enuff clearance between the hanger and the gas tank opening IMO.. i hate it when i put the nozzle in and it knocks off the cap from the hanger, banging it against the body panel
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From: Toronto, Ontario, Canada
Originally posted by Matt230K
Do you know that you have to put it in the hanger and then push it back and it kinda snaps in. It seems to be held in pretty good after you do that.
Do you know that you have to put it in the hanger and then push it back and it kinda snaps in. It seems to be held in pretty good after you do that.
[scratches some more]
I'll try that next time:o
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From: Ohio
2010 C300 4matic
Originally posted by pokerFACE
[scratches head]
[scratches some more]
I'll try that next time:o
[scratches head]
[scratches some more]
I'll try that next time:o
MBWorld Fanatic!
Joined: Oct 2002
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From: South Orange Co., CA
'03 W211 aka E-500
Gas Cap probs?
Anyone else have any issues with their gas caps? Mrs. EDJ was driving the '03 C320 yesterday and when she went to gas up, neither she nor the gas station guy could get the gas cap to go back on properly. After 15 minutes she called MB Roadside Assistance. They told her that it happens occasionally and that it was safe to drive without the gas cap on.
She drove it to the dealership who spent all of 2 minutes doing something to the alignment of the gas cap threads (???)
Anyone else have this problem?
EDJ
She drove it to the dealership who spent all of 2 minutes doing something to the alignment of the gas cap threads (???)
Anyone else have this problem?
EDJ
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From: San Diego, Ca
2003 Citron Green C230KMT
Fuel Filler Cap
I was driving this morning and i got a red error message saying my fuel filler cap was loose. My yellow light was blinking so i pulled over opened the flap and the cap was off. the pegs were out in the locked position and i had to use two flat head screw drivers to pry the pegs up so i could turn the plastic base underneath in order to screw back on the cap. i fuelled up Monday and i had 3/4 of a tank. I drive 10miles round trip to work and car pool with my brother so i dont use much gas during the week. anyhow kinda wierd, has this happened to anyone before. im thinking maybe i didnt screw it on so both pegs were locked in and only one was. anyhow just curious. 
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From: San Diego, CA & San Jose, Costa Rica & Stuttgart, Germany
1959 220S / 1979 230 G / 2002 A210 AMG / 2003 C320 SC / 2004.5 C320 SS / 2005 ML350 SE / 2008 smart
First time I've heard of that one. Haven't had any cap problems on my coupe. Maybe it just a matter of making sure that you have the cap well centered and evenly distributed as you twist it back on after refueling. Maybe one of the pegs, like you said, didn't lock and the rest did. 
