I found keys in my backseat and knew who left them so I drove back to the bar I had dropped him at to return the keys.. I notified Uber about keys left, & where I took them back to passenger. I received my $15. Can anyone tell me if Uber lumps ithe $15 into the Trip service fee? Passenger had told me he was going to tipp me for the first trip and I never received a tip. I can't tell if it's my tip or the $15 lost fee in the $18.83 $ervice fee .