Car Key Fobs Replacement
Providing key coding to the whole of London and nearby home counties

Car Key Fob Replacement and Battery Solutions
Why Key Fobs Are So Expensive to Replace

Types of Car Key Fobs and Replacement Costs
01.
Basic Key and Key Fob Replacement
Cost: $50–$100 depending on the automaker.
Programming: Some dealers do it for free, others charge for labour.
DIY Tip: Many vehicles allow you to program a new fob with a combination of button presses and ignition turns (instructions are often found in the owner’s manual).
Aftermarket replacement car key fobs are available online or from locksmiths, but quality can vary.
02.
Transponder Key and Fob Replacement
Introduced in the late 1990s, these keys contain a chip that communicates with the ignition.
Without the correct chip signal, the car won’t start.
Average replacement cost: $150–$300 including programming.
Dealers and most auto locksmiths can cut and program transponder keys.
Pro Tip: Consider creating a third spare key to avoid high emergency costs.
03.
Laser-Cut Keys
Thicker shank with fewer grooves, cut with specialized machines.
Almost always include a transponder chip.
Replacement costs: $150–$300 with programming.
Not all locksmiths have the equipment—dealerships may be your only option.
04.
Switchblade Keys
Feature a foldable shank that flips open at the push of a button.
Replacement costs: $200+ with programming.
Advantage: The shank and fob can sometimes be replaced separately, saving money.
05.
Keyless Entry Remotes (Smart Keys)
There is no physical key, only a fob which allows one to unlock the car by pushing the button and start the car.
Use rolling codes for added security.
Replacement costs: $250–$600, depending on brand and complexity.
Must be purchased and programmed at the dealership or authorized reseller.
Example: A smart key for a 2018 Honda Accord costs around $300 including programming.
Types of Car
Key Fobs

Car Key Fob Battery Replacement
Car Key Fob Battery Replacement
Not every problem requires a new key fob. Sometimes, you only need a car key fob battery replacement.
Most fobs use coin-shaped batteries such as CR2025, CR2032, or CR2450.
- Use a small flat screwdriver to open the fob.
- Note the battery orientation.
- Insert the new battery in the same position.
Better Safe Than Story
- Always keep a spare key fob.
- Consider ordering a low-cost backup key without a transponder (for unlocking doors only).
- Store spare batteries at home to avoid emergencies.


Conclusion
Car key Solutions for the Following
Vehicle Manufacturers
Our car Key Services for the general public are only available in London & South East of the UK.