I had bought a new gas cap and it's causing the gas light to flash and the check engine light to come on. Luckily I kept the original. Since I've put it on there have been no warning lights.
I would like to replace the original with a good quality cap. I've looked through the MoPar/Mercedes-Benz cross reference with no luck. I've searched the posts with no luck.
Does anyone know if this one will fit? Thanks in advance for any help.
https://www.fcpeuro.com/products/mer...cap-2154700105

 

here is a link to an original cap: https://www.worldpartsdirect.com/oem...Y2LWdhcw%3D%3D

 

I bought a replacement cap using the SLK-320 vehicle reference part source. Happened too long ago so I do not know where I got it (the plastic cord broke so I ordered one). I don't know how much the OEM is marked up but it is all up to you. No code, lamp, flashing light, trouble lamp, code (that I know of), or anything else especially a loss of performance or stumble. My new one has no plastic cord so it isn't distracting with that old broken tether mounted on the cover (where the cap holder is). Yes, I removed the broken tether cord left on the cover. Good luck!


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Here's one at Rockauto for a reasonable cost:
https://www.rockauto.com/en/moreinfo...t=5900&jsn=228

 

Thanks!

 

Thanks!

 

curious. How do you know the gas cap is causing those lights to come on.
asking because my gas light flashes when I get too a half tank
I have replaced the gas cap. Looks exactly like OEM. Still have the flashing low fuel light at half tank. Sometimes the CEL
THANKS

 

I went to get gas at the same Sunoco station I always go to. Instead of using 91 octane I put in 93 octane. I put in 3/4 of a tank. We were driving around and about 30 minutes later the gas light started flashing.
I stopped the car, turned it off and took off the gas cap and put it back on. We drove around for a bit and went home. A week later we were in the car and the gas light started flashing again.
I stopped and did the same as last time. I started driving and the light started flashing again and the check engine light came on. I took the car home and got codes P0455 & P0442 both evap leak codes.
I came on to the forum and did some searching and a few people had posted about their gas cap being the trouble. Luckily I still had my original and since I've put that on it hasn't hasn't happened.
I looked at both caps and the seal on the aftermarket cap looks like it's a tiny bit smaller than the original. Also the part number doesn't look right. The original also has metal guts as opposed to the aftermarket which has plastic guts.
That's why I'm pretty sure it's the gas cap.

 

ok. I'll look into my cap again thank you

 

UPDATE:
I think the aftermarket gas cap was my problem. The original is still going strong.
Lesson learned. If you're going to replace the gas cap, don't cheap out like I did. Spend the extra money and get a high quality one.

 

For those looking to replace the gas cap, here's one on Amazon I saved in my XFire List:

 

That's the one I had replaced my original with. That's the one that I changed back from to my original after the problems started.

 

I went through the same process. Broken lanyard, so I replaced the gas cap, probably off of Amazon. Got several codes and cleared them. Got frustrated and went back to the original cap and so far no codes. Apparently, the replacement cap is not quite a "good" replacement cap.

Need to be more diligent in reading these posts and not picking up "knockoff" parts. Also, it pays to have a good scanner.

Terry

 

Looks like you have been around since the beginning.

 

I wanted a crossfire when they first came out. Finally happened and now I have two. A north one in Michigan and an SRT that I just received the Florida title. Have to make up for lost time.....

 

the Crossfire does not use the same gas cap as the SLK. here is the actual cap / tether for the crossfire
https://www.needswings.com/fuel-cap-oem