2006 FEH ScanGuage 2
 

New to the site and tried searching but could not find.
Has anyone ever had their ScanGuage 2 go into sleep mode ? I have a 2006 FEH . I setup the Scanguage 2 as the directions say but it goes to sleep after I have been driving for anywhere from 30 min to 1 hr. If I press the bottom right button it will wake up but then go back to sleep 5 mins later.
Any suggestions ?
TIA