GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

Gas cap

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Old Aug 8, 2023 | 05:44 PM
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2012 gl450
Gas cap

Hi, I have a 2012 GL 450 the check engine light went on today and I checked the gas cap and it was totally loose. Will the check engine light go off eventually.
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Old Aug 8, 2023 | 06:25 PM
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08 GL320 CDI
If that was the only issue, it should turn off the next time you start the vehicle.
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Old Aug 8, 2023 | 10:41 PM
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Mercedes Benz 2007 GL450 , 2012 BMW 528i
Originally Posted by Pmanc
Hi, I have a 2012 GL 450 the check engine light went on today and I checked the gas cap and it was totally loose. Will the check engine light go off eventually.
if code is evap related i.e. p0441,2,3 etc, then yes,
if it was due to gas cap being lose, then check engine light will go away. It might not be right away at next start. Because system runs evap pressure test under certain conditions ( related to ambient temp, speed, engine temp)
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Old Aug 9, 2023 | 01:51 AM
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NGL450 w/EORP, S550
Originally Posted by Sallad
If that was the only issue, it should turn off the next time you start the vehicle.
After three cold starts.
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Old Sep 12, 2023 | 02:49 PM
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'10 CL550, '12 GL550
Just FYI ...

Gas cap for gasoline X164 is no longer available from Mercedes
Diesel yes.
NOT suggesting substitution.
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