Mobile Auto Locksmith
Smart Car Keys
Keyless vehicles use a proximity key that stays in your pocket. There is no blade to turn and no slot to insert it into — the car detects the key, unlocks on approach and allows push-button start.
Smart keys are more complex than traditional remotes, and replacing one is a programming job rather than a cutting job, though most still contain an emergency blade for the driver's door.
- Keyless entry vehicles
- Proximity keys
- Push-button start keys
- Replacement smart keys
- Smart key programming
- Emergency blade cutting where fitted
Replacing a smart key
The replacement must match your vehicle's exact system and frequency. This is why we ask for the registration up front — a smart key that looks identical can be the wrong part electronically.
Keyless theft and relay attacks
Proximity keys can be relayed by thieves if the signal is captured near your home. A signal-blocking pouch when the key is not in use is a simple, cheap precaution.
Emergency blades
Most smart keys hide a mechanical blade for the driver's door. If yours has never been cut, it is worth having it cut and tested before you need it in a flat-battery situation.
Smart Car Keys FAQs
Can you replace smart keys?
For many vehicles, yes. Send your registration and we will confirm availability and price for your specific model.
My keyless car won't start — is the key dead?
Possibly. Most keyless cars have an emergency start method described in the handbook; if that works, the key or its battery is the likely fault.
Is a spare smart key worth it?
Yes. Producing a smart key with no working key present is a longer and more expensive job than adding a spare.
Ask About Smart Keys
Only Car Key provides mobile car key replacement, spare keys, vehicle unlocking and key programming across East London, Essex and surrounding areas.
For vehicle security, proof of ownership or authority to access the vehicle may be requested before locksmith work is carried out.