I’ve just owned my 2007 Prius a week, looking at purchasing a code reader for diagnosing issues. Currently having intermittent dash display issue, sometimes it’s just blank, except for passenger seat light, other times it’s normal: speedometer, gas gauge, warning symbols, etc. functioning (all off except tire pressure). I started using a trickle charger on the 12V in hopes that might make a difference, no consistent results so far. Additional malfunctions concurrent to blank dash read outs include: no live info on mileage screen and the backup camera does not engage when I shift into Reverse. It’s no fun driving without a speedometer. Have ordered 3 volume 2007 OEM repair manual set, looking for the best (preferred) code reader for Prius/hybrids. Any thoughts on the intermittent dash display situation (and code reader) would be a huge help. Thanks! Glad to find a forum such as this.