If your key does not work after you change the car battery start the engine by pressing the start button with the keyfob.
Car key battery low.
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The battery number should be embossed on the back side of the remote.
Most fob batteries for keyless remotes are sold at hardware stores even big box retailers like target walmart and others.
If your key does not work after changing the key fob battery here are some possible causes.
To prevent this from happening there is a warning light on the dashboard.
Key could mean they key fob that unlocks and starts the car.
Key battery low the message on the dashboard read.
If your key fob battery went completely dead you wouldn t be able to start the car and could end up stranded somewhere.
Don t touch key fob circuit avoid touching the key fob circuit with your bare hands.
Replacing your honda key battery is easy and takes less than five minutes.
When it starts to take more effort to unlock the doors of the car this is commonly a sign that the battery has worn out and needs to be replaced.
If the battery in your keyless entry remote is running low you ll notice a decrease in range and eventually a lack of response.
Look for a four digit number like 2025.
Once the voltage gets to a certain point the warning light will illuminate on the dash to let you know to replace the batteries.
Check your owner s manual or the manufacturer s website or call a local dealer if you don t know what kind of battery you need.
Or the key fob if that s what your car uses.
Most manufacturers like honda make it fairly easy to find out what kind of battery your key fob uses.
You can read that two ways.
Or key could mean critical fortunately when a toyota says key battery low it means the key that unlocks and starts the car.
If you drive an older vehicle the battery type may not be indicated.
When the key is in use the computer monitors the output voltage of the fob s battery.