Take to the mechanic.

This link may help:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-3.html#post258005

What make and model of car, and what style of key (i.e. is it a traditional metal key that you insert into the ignition and turn, or is it one of the newer "key fob" style?)

I thought this was a lesson in writing a Haiku... since they only took the time to write 4 words.