Vehicle guide

Key fob not working: battery or programming?

Figure out whether a key fob needs a battery or programming. Simple checks to try and when to call a locksmith in Monroe County.

24 hours · Monroe County

585-669-6480

Answered 24 hours. Tell us the door, lock or vehicle and where you are.

Short answer

Try a fresh battery and your spare fob. If the spare works and the battery change does not help, ask about the fob.

Try the battery first

Replace it with the exact battery type printed inside the case. Note the orientation before removing the old one.

Use the spare as a test

If the spare works, the problem is likely the first fob. If neither works, the vehicle side may be involved.

Starting with a dead fob

Many push-button vehicles have a backup method, described in the owner’s manual, for starting with a weak fob.

When to call instead of reading

  • A new battery did not help
  • You need a replacement fob checked for compatibility
Call 585-669-6480

Straight answers

Common follow-up questions

Does a new battery erase programming?

Usually not, but check your owner’s manual.

Can I use a fob from another car?

Often not. Some fobs cannot be reprogrammed once used.

Related services

Mentioned in local notes for Fairport and Perinton, Gates, Spencerport.

General information only. Every lock, door and vehicle differs; confirm specifics with a locksmith or the manufacturer.

Any hour, any day

Stuck right now? Call and say what’s going on.

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Call 24h · 585-669-6480