top of page

Key Copy Doesn't Work When Starting the Engine – Solution with a Certified Locksmith in Puerto Rico

¿Por qué una copia de llave no enciende el vehículo?

Cuando una copia de llave abre las puertas pero no enciende el carro, el problema casi siempre está en el sistema electrónico (transponder). Como Certified Locksmith en Puerto Rico, esto ocurre frecuentemente cuando la copia no fue programada correctamente.

Key without chip or unprogrammed transponder

Many copies only replicate the mechanical cut, but do not include electronic programming for ignition.


Incorrect or incomplete programming

The chip may be present, but if it is not synchronized with the vehicle, the security system will block the start.


Common situations in this problem


The key unlocks the doors but the car won't start.

It indicates that the mechanical part works, but the immobilizer system does not recognize the key.


Safety light on the dashboard

This indicates that the vehicle does not validate the transponder chip.


What can you try before calling?


Try with the original key

If the original turns on, the problem is with the copy.


Check if the copy has a chip.

Some budget keys do not include a transponder.


Home diagnosis and solutions in Puerto Rico

At ServicioCerrajero – Certified Locksmith , we fix this problem right on the spot.


Correct programming of chip key

We synchronize the copy with the vehicle's system to enable ignition.


Creating a new compatible key

If the copy is not suitable, we generate a new key with a programmed chip.


Immobilizer system diagnosis

We confirm whether the problem is with the key or the vehicle.


Advantages of working with a Certified Locksmith


• Home delivery service in Puerto Rico
• Immediate professional scheduling
• Savings compared to dealerships
• Complete diagnosis
• Quick and safe solution


Frequently asked questions about key duplication


Can any copy start the car?
No, it must have a chip and be programmed correctly.


Can a copy be scheduled after it's been made?
Yes, provided the key has the correct chip.


🚨 Is your spare key not starting the vehicle?


At ServicioCerrajero – Certified Locksmith in Puerto Rico , we offer on-site programming and repair services to ensure your key works properly.


📞 Call 787-664-8885 and receive immediate assistance.

bottom of page