If the key fob has stopped working for Your 2017 Honda Civic the most obvious cause is going to be because of a dead battery. You're going to need to use a CR2032 battery for the key fob on this vehicle. To replace it You'll first need to remove the physical key and then use a tool to pry the two sides apart. Now on one side will be the part that holds the battery and You'll just need to swap it out and then snap everything back together. If the battery isn't the issue it may be a wiring issue with the vehicle and You're going to need to have a professional look at it.
William M.
April 10, 2020
The 2017 honda civic key fob not working causes are a weak signal or the key battery is dead.
Needs a battery. YouTube “Honda key fob battery change” It’s a 20 second job
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