no they are your boost lights, there are 3 in an arc that show u what level of boost you are running, in LO only two will work, basically 0.3bar and 0.5 bar, in HI three work, 0.3, 0.5 and 0.7 bar respectively the 4th on the far right tells u whether you are in LO boost mode or not, if its on you are in LO