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John, Engineer and electronic enthusiast for more than 12 years.
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I have a kwikset 909 smart code electronic deadbolt. It was

Customer Question

I have a kwikset 909 smart code electronic deadbolt. It was working fine and when I replaced the batteries there is no light, no sound, no anything as if does not not work. Do you have an idea on what the problem might be?
Submitted: 4 months ago.
Category: Consumer Electronics
Expert:  Louie replied 4 months ago.

Hi Julian and welcome to the site, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.

Initially, have you re-checked / cleaned the battery terminals and contacts as well as verified polarities ?