amdeutsch

If she doesn't know; don't let her. (j/k)

MJ50

make sure the metal piece on the cap is aligned with the plastic piece....

Sponger

Fixed! It took me about a minute after I did a search.

advans

didnt end up to be one of these situations right!?



just kidding

Sponger

^^^

vectorz

I have a 2k2 C240, and had to change the gas cap because it broke. As soon as I did, within 10 minutes I got a check engine light. I assume it is directly correlated but do you guys just think it's a coincidence?

Any insight would be much appreciated.

Thanks!

JonB C240

Funny thing. I just had the EXACT same issue. I put the gas cap on wrong and i got the check engine light. Even when I put the cap back on correctly the check engine light stayed on. I called the dealership and spoke to my service advisor and told him about the loose gas cap and check engine light. I went in yesterday and they cleared the check engine light for no charge. So i suggest calling the dealership and doing the same.

///AMG4EVER

Did your cluster light up red stating "Filler Cap Open"?

drexappeal

Lesson learned. Close your gas cap.

All seriousness though, you can go to Autozone and borrow the OBDII scanner to clear the code. You will be charged on your credit card until you bring it back, but it's a complete refund when you return it.

Moon-Coupe

I was surprised to find my gas cap cover not closed all the way and the cap off inside there the other day. It was shortly after getting gas and a car wash also. I immediately felt a little nervous that water may have gotten into the tank, but then realized that the CEL should have come on also. Should I worry about the CEL not coming on or the possibility of water in there?
It's been a couple of days and half a tank since and no problems (yet).

splinter

Yes. Have a forthright discussion with your full-service attendant immediately.

Moon-Coupe

Ummm... that would be me

VTruong01

So my check engine light has been on for the past week. I didn't have a chance to take a look at it since I get off work late. Well, this morning I went to work and ask our station mechanic if he had an OBDII reader. He said no and then asked if the car is still running fine. Car has been running fine, engine still purrs. He tells me to check my gas cap. I look at him like "what?!?" I went out to check my gas cap and it wasn't turned all the way. I tightened it, started the car, no light. Drove around just in case and still no light.

I feel like a 'tard after this one.
Lesson here? Check your gas and oil cap.

e1000

yes the gas cap will throw a CEL in all modern cars

velvet fog

The other clue that a CEL is caused by the gas cap is that the low fuel warning will light up regardless of how full your tank is.

VTruong01

No low fuel warning light came up during the whole thing.

559EVO

thanks for the info, this happened to me today. I felt so dumb not being able to put the gas cap back on, I ended up driving home like that.I'LL fix it in the morning.

dmatre

Happened to me several times with the old 300TD, not yet with the C230.

After the first time, you carry a set of pliers in the trunk to fix it at the pump.

I was in the same boat that you were, and the guys on the W124 forum came through for me.

C230 Sport Coup

Ha ha, wow talk about an old thread, but yes, I've had this happen several times. And yup, a pair pliers is whats needed to get it back into proper alignment to start with.

At 123K miles, I carry MUCH more than just pliers.

chazzz

My wife has a 2007 C230. I couldn't find a way to lock the gas cap (to prevent from possible gas thefts). Does this car have a lock cap?

I have a 2007 BMW 335i and the door to gas cap is automatically locks every time I lock my car with a key fob.

Thanks in advance for answering my question.

FrankW

the gas cap locks when the doors are locked...unless it's already broken.

owners manual is your friend.

nickgailloux

With the gas door open, lock your car, you'll see how it works.

kevblah

does my '02 do that too?

RLE

<<does my '02 do that too?>>

It's been standard all models for at least 30 years.

BF_JC230

My 1980 W123 will do that! It also has a lock on the cap...Those smart German engineers...
Jake