Battery? H1?

[leenigen]

It sounds like the starter solenoid. If you're lucky the starter just isn't getting enough juice to turn over. I would first check and clean all connections. Trace the + cable from the battery all the way to the starter. Disconnect and clean each conection with a wire brush. Depending on where you're located, corrosion can happen pretty fast and 6 years is plenty of time to erode those connections enough to impede starting.