A remote is not always the starting key
On some vehicles, the buttons unlock the doors while a separate transponder in the key authorizes the engine. The buttons can work even when the car does not recognize the chip. The reverse can also happen: a key may start the engine while the remote buttons no longer work. Describe both behaviors when you request help.
A traditional metal blade can be cut to turn a lock, but many newer vehicles also require an electronic identifier. A correctly cut blade alone may open the door without allowing the engine to run.
What makes a smart key different?
A proximity or smart key is usually recognized while it remains in a pocket or bag. The car can unlock when you approach or start with a button, depending on the model. The system still relies on a compatible key and vehicle security programming. Key shape, frequency, part number, and the vehicle’s installed equipment can all matter.
A low fob battery can produce intermittent behavior, but a battery is not the only possible cause. Damage to the fob, a vehicle battery issue, a receiver problem, or lost programming may produce similar symptoms. Replacing parts before identifying the behavior can waste time.
Clues to share with the locksmith
Tell us whether the remote buttons unlock the doors, whether a mechanical blade works, whether the dashboard displays “key not detected,” and whether a spare starts the vehicle. Mention if the problem began after a battery change, water exposure, a repair, or a period of intermittent performance. The year, make, and model remain essential.
These clues narrow the conversation; they are not a diagnosis by themselves. Programming procedures and available key types differ across model years, even within the same brand.
When mobile programming makes sense
If the vehicle cannot be driven or you need an additional key at home or work, mobile service may be convenient. Franco’s checks compatibility, location, key availability, and current dispatch before confirming an on-site option across Broward and Miami-Dade.
Ask whether the estimate includes the new key, cutting where applicable, programming, and testing. If a working spare exists, keep it ready so the technician can verify the system and the newly programmed key.