Power button not working on Macbook PRO 13" 2013 - ideas on how to reset SMC
If you disconnect the battery, it will reset the SMC.


Remove the back cover
Using a plastic spudger, disconnect the cable from the battery to the logic board
After 30 seconds, replace the connector to the logic board
Replace the back cover.


In another related post, I detail how the SMC is reset.

Replace the Keyboard

The symptoms you are describing point to an electrical short in the keyboard.  See this related post for more details.

Bottom Line

If you are hoping that the SMC reset will fix these problems, it will be a fruitless endeavor.  The SMC regulates power distribution and cooling,  not functionality (resetting the NVRAM wouldn't help either).  The only way to repair this is to replace the faulty components.