How to Replace Key Fob Battery
Learn how to replace key fob battery with our detailed step-by-step guide. Follow our easy instructions to get it done right.
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0 of 6 steps completedStep-by-Step Instructions
1 Step 1: Identify Battery Type Needed
Step 1: Identify Battery Type Needed
Check owner manual or open fob to determine battery type (usually CR2032, CR2025, or CR2016).
Key Fob Battery Assortment
Multi-pack of common fob batteries (CR2032/2025/2016)
2 Step 2: Open Key Fob Case
Step 2: Open Key Fob Case
Locate hidden slot or screw, then carefully pry open fob using flat tool without damaging case.
Plastic Pry Tool Set
Non-marring opening tools for electronics
3 Step 3: Remove Old Battery
Step 3: Remove Old Battery
Note battery orientation (+ side up or down), then carefully remove dead battery from compartment.
4 Step 4: Insert New Battery
Step 4: Insert New Battery
Place fresh battery in same orientation as old one, ensuring proper contact with terminals.
CR2032 Battery 10-Pack
Most common key fob battery replacement
5 Step 5: Reassemble Key Fob
Step 5: Reassemble Key Fob
Snap or screw case halves back together, ensuring all clips engage and case is fully closed.
6 Step 6: Test Remote Functions
Step 6: Test Remote Functions
Verify lock, unlock, and other buttons work properly with new battery installed.