2000 Sienna can not start up engine

My 2000 Sienna only runs 45,000 miles. I left it in Garage for two months and not drive it. This morning I can not startup the engine. The head light and CD/radio still can turn on. I can hear the ignition sound, like "Ka, Ka, Ka, ..." but the engine just not start up. There are quite a few warning lights turned on, like battery light, engine light, ABS light.

Do you think it could be a battery problem or spark plug problem?

Thanks,
Hans

If the engine doesn't sound like it is actually rotating, you probably need to charge your battery. If it turns over but doesn't start, tap the idle stabilizer a few times with the end of a screwdriver (they have a tendency to stick).

So even I can turn on the head light, it still could be battery problem?

Thanks,
Hans

Is the motor turning over or are you just getting a bunch of clicking noise?