W210 Transmission Fill Cap - PeachParts Mercedes-Benz Forum

FoByFo · #1 04-07-2006, 03:01 PM

I feel stupid here but, for some reason, can't get my transmission fill cap to snap back on after doing a transmission service. When I removed the cap I broke off the red tab and pushed the stem through with a small screwdriver and the cap came right off. When I try to replace it with a new tab it will not snap down. It seems like I'm missing something. The cap just slides right back off - the tab not engaging anything. The notch in the tab looks like it should engage the flange on the fill tube but is too far away.
What am I missing?

Ali Al-Chalabi · #2 04-07-2006, 03:29 PM

The red tab is a one-time deal. You need to purchase a new red tab to get the cap back on. It gets broken in the removal and you need a new one to resecure the cap.

FoByFo · #3 04-07-2006, 03:55 PM

I would appreciate another try. As I said, when I try to replace with new tab the cap doesn't want to engage.
Thanks.

sokoloff · #4 04-07-2006, 03:58 PM

I have never found a need to replace mine. The cap is pretty snug on there and now that I have the dipstick tool, I will likely check the fluid level at least at every service.

Len

FoByFo · #5 04-07-2006, 09:08 PM

My Cap doesn't fit tight at all. In fact, I'm sure it would fall off due to vibration, etc., if not mechanically attached with the lock tab. I am puzzled. Can anyone give me some guidance?

sokoloff · #6 04-08-2006, 12:08 AM

Does your cap still have the rubber O ring on it? That's what makes mine fit so tightly.

Len