i thought i saw a thread on this awhile ago, but couldnt find it. the sel/reset and

/mph buttons lights have gone out on my car. u think it would be covered under warranty? ill go and cheack anyway, but if its not i was just going to replace them with blue bulbs (i believe they are bulbs and not LEDs) but anyone know what kind of bulbs they use? and i dont understand why they both went out at the same time