Thank you for viewing! (^_^) Thomas the Tank Engine Plarail Jet Engine When you turn on the switch and run it, the light flashes. Currently, it lights up when batteries are inserted, but we cannot provide support for any issues after arrival. We have not disassembled and wiped it down. We are selling duplicates and unwanted items from our collection of Thomas the Tank Engine Plarail toys. This is a used item with some damage, so please only purchase if you are not concerned about the details. m(_ _)m When purchasing, please also read the profile section, as it contains information about shipping, etc. Thank you! (^_^)