Had this unit installed during renovation project are you a contractor. The Faucet is nice and very convenient but the electronics is not reliable after 4 years. 
My wife couldn’t turn on the faucet by touching the spout, but she was able to turn it on by touching the base. I changed the batteries but that didn’t solve the problem. but if I slap the spout it would turn on sometimes. Is the touch feature dying?
I don’t know if the touch feature dies if I can turn on the faucet. I know without batteries the faucet won’t work. There should be a fail safe mode.