Car Key Guides
By · Last updated: October 12, 2026
Short answer These guides explain how to find the exact replacement key for your car (by VIN, FCC ID or part number), what replacement costs and how to program or troubleshoot key fobs. Start with the VIN lookup if you are not sure which key you need.
Find the right key
- What’s the Difference Between a Key Fob and a Smart Key?
- Xhorse Universal Remotes and Keys Explained: Are ‘Generated’ Keys Right for Your Car?
- FCC ID Lookup Guide: How to Find the Right Replacement Key Fob
- Transponder Key vs Smart Key vs Remote: What’s the Difference?
Cost and buying
- Spare Key Fob: How to Get a Duplicate Car Key Fob for Less
- Aftermarket vs Dealer (OEM) Key Fob: Price, Quality & Programming Compared
- Lost Car Keys? Here’s What to Do (and How to Save Money)
- Car Key Fob Battery Replacement Guide: Every Make & Model
- Car Key Replacement Cost in 2026: How to Save Hundreds (Dealer vs. Locksmith vs. DIY)
Programming and troubleshooting
- Can a Used Key Fob Be Reprogrammed to Another Car?
- Autel Key Programmers Explained: What Drivers Should Know Before Getting a Key Programmed
- Key Not Detected: What It Means and How to Start Your Car
- Key Fob Not Working? 7 Fixes to Try Before You Replace It
More guides
- Can a Hardware Store Copy a Car Key or Key Fob?
- How to Start a Push-Button Car With a Dead Key Fob
- Key Fob Got Wet? What to Do (and What Not to Do)
- How Long Do Key Fobs and Key Fob Batteries Last?
Key guides by vehicle
Each make page lists our vehicle key guides, for example Toyota, Ford, Honda, Nissan and Chevrolet.
Residential locksmith tools
Kwikset Lishi KW1 vs KW5: compare tool choices and SmartKey limits before choosing a tool for a known residential job.