Mike Manthe Posted July 10 Share Posted July 10 My 2017 Highlander gas gauge is weird; dealer couldn't fix it. I like to add a gallon frequently to get more KwikTrip rewards. When it says fuel low I can add a gallon and it says the same, still low. Add another gallon and same thing. By the 3rd or 4th gallon the gauge suddenly shoots up to 3/8 to 1/2 full. Any clue why and what to do? Mike Quote Link to comment Share on other sites More sharing options...
Toyota Owners Club Posted July 23 Share Posted July 23 I think fuel gauges are vague at best and only really useful as a guide. I tend to drive (and ride motorcycles) looking at the mileage and distance remaining rather than the fuel level gauge as not reliable enough. Maybe worth filling it right up as there may be some issue with the fuel sender unit only working half full or less. Quote Link to comment Share on other sites More sharing options...
Mike Manthe Posted July 23 Author Share Posted July 23 Thanks. I've tried filling it and everything else, nothing works. It was fine until about 2 years ago. Mike Quote Link to comment Share on other sites More sharing options...
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