Key Fob Programming & Replacement Overview
A key fob — the remote that locks, unlocks, and sometimes starts your vehicle from a distance — must be electronically paired to your car to work. Buying a replacement fob online or at a parts store is only half the task; it still needs to be programmed to your specific vehicle before it will function. An automotive locksmith can source a compatible fob, cut the emergency blade if required, and complete the programming on-site.
Before requesting service, note your vehicle's year, make, model, and whether you currently have any working fobs or keys. Some vehicles allow owner-initiated programming through a button sequence described in the owner's manual, while others require a professional scan tool. Also check whether your fob has a built-in emergency blade, as that blade may need to be cut separately.
- Covers remote head keys, proximity (push-to-start) fobs, and basic remotes
- Fob must be electronically paired to your vehicle after physical replacement
- Some vehicles require all existing fobs to be re-programmed when a new one is added
- The emergency blade inside a smart key fob can also be cut on-site
- Ask the pro whether your vehicle model supports aftermarket fobs or requires OEM
