Tighten Gas Cap message
10-19-2007, 09:27 PM
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My Ride: 2004 545i Platinum Silver Metallic Gray Dakota Leather, Premium Pack, Premium Sound, Logic 7, Sport Pack, Navi, PDC, Sunshades, Cold Weather and HUD. 56k miles Feb. 2011
Twice in a role I got the "Tighten Gas Cap" message while driving after I filled up the tank. I still got the message even after I stopped the engine, opened the gas cap and re-tighten it. Is there a special way to tighten the gas cap ?
Sean
Sean
10-19-2007, 11:29 PM
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My Ride: 2011 E92 335i M-Sport 6MT
Interesting. The cap on my car clicks only 1 time once the seal is tight; almost analogous to a torque wrench click once the desired torque is achieved. Once the click is reached, you can't turn the cap any further and it will not click more than once ... like those multi-clicking, ratchety fuel caps found on Hondas/Acuras.
10-20-2007, 01:14 AM
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My Ride: G30 530i M-sport
Model Year: 2018
Originally Posted by Roleez' post='483768' date='Oct 20 2007, 09:29 AM
cap on my car clicks only 1 time once the seal is tight; almost analogous to a torque wrench click once the desired torque is achieved. Once the click is reached, you can't turn the cap any further and it will not click more than once ... like those multi-clicking, ratchety fuel caps found on Hondas/Acuras.
It is interesting to note that there appear to be dodgy seals on some of these filler caps. I was cleaning the car a couple of days ago and noticed traces of engine oil sitting in and around the engine oil filler on the engine block. Took it straight into the dealer, they gave me a new cap, problem solved - no more engine oil outside the engine. I guess it's just one more thing that we would want to keep a regular eye on.
10-20-2007, 06:34 AM
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I am now getting this message at various times on my '04 as well. I suspect that the rubber gasket around the gas cap is simply getting old and not sealing as well anymore. Of course the last time I was at the dealer I asked them to look at it and of course they could duplicate. Guess I'll have buy a new cap myself to stop the message...
10-20-2007, 07:58 AM
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Originally Posted by kscarrol' post='483826' date='Oct 20 2007, 10:34 PM
I am now getting this message at various times on my '04 as well. I suspect that the rubber gasket around the gas cap is simply getting old and not sealing as well anymore. Of course the last time I was at the dealer I asked them to look at it and of course they could duplicate. Guess I'll have buy a new cap myself to stop the message...
10-20-2007, 11:12 AM
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My Ride: 545i, Adaptive Xenons, 19" 166's
Originally Posted by elyk' post='483890' date='Oct 20 2007, 01:18 PM
all our caps tighten to one click. what i meant was, after that one click, you release and turn the cap again, and release and turn the cap again.
1) Check your gas cap.
2) Check for leaks under the R/R wheelhouse
3) Check for leaks in the fuel hoses
I found a leak in my tank vent valve, and that fixed the problem. I highly suspect the tank vent valve.
Good luck!
05-13-2011, 10:47 PM
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My Ride: 545i Sport
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There is a tank leak. Don't you hate new technology? Imagine with the older cars you'd never know you had a leak, so you wouldn't worry about it. Now you can't sleep after you find out something is wrong.
1) Check your gas cap.
2) Check for leaks under the R/R wheelhouse
3) Check for leaks in the fuel hoses
I found a leak in my tank vent valve, and that fixed the problem. I highly suspect the tank vent valve.
Good luck!
1) Check your gas cap.
2) Check for leaks under the R/R wheelhouse
3) Check for leaks in the fuel hoses
I found a leak in my tank vent valve, and that fixed the problem. I highly suspect the tank vent valve.
Good luck!
