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Message: <blockquote data-quote="Deutsch100" data-source="post: 61179" data-attributes="member: 6625">I have been driving for almost 30 years, and have never overfilled a gas tank <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" /> This is something my Mom and Driver's Ed teacher harped on!I have only filled the REX tank one time, and the minute it clicked I stopped immediately.  And the last time the tank was topped off, the BMW dealer did it themselves when my i3 was in for service, for the same thing that happened today :-OThe CEL comes on and the codes populate when REX activates.  No REX...perfect i3, no CEL & fault codes.  REX comes on...CEL light comes on!Googling the CEL and these codes...this has been happening for over 5 years now.  Crazy!</blockquote>