Relay attack
Signals from some proximity keys can be extended between the key and vehicle when the key is stored within range.
Modern vehicle protection
Your vehicle
is only as secure
as its key.
Modern keys are part of a wider security system. We help vehicle owners understand key-related risk, respond after keys are lost or stolen, and make better decisions about storage, programming and replacement.
Security starts with the key
Protect access, authorisation and control.
A vehicle key does more than unlock a door.
Depending on the vehicle, it can contain a mechanical blade, transponder, remote-control electronics, proximity functions and encrypted authorisation data. Losing control of any part of that system can create risk.
Odell Automotive focuses on practical key-related security: secure replacement, missing-key deletion where supported, careful programming, sensible storage advice and honest guidance about what a locksmith can—and cannot—change.
Common threat types
Understand how key-related theft can happen.
Key theft
A stolen physical key may provide both remote access and valid immobiliser authorisation.
Lost-key reuse
A missing key may remain authorised unless the vehicle supports and receives key deletion or reprogramming.
Unauthorised programming
Poor control of diagnostic access or key-learning procedures can create additional authorised keys.
Mechanical entry
A previously cut blade may still operate a lock even if its electronic starting authorisation has been removed.
Exposed key data
Photos, labels and careless handling can reveal useful information about key profile, vehicle identity or ownership.
Relay theft awareness
Convenience keys need careful storage.
Some keyless-entry vehicles continually look for an authorised key nearby. A relay-style attack attempts to extend that communication so the vehicle behaves as though the key is closer than it really is.
Key stored near an entranceThe signal may be easier to reach from outside the property.
Signal is relayedEquipment attempts to bridge communication between key and vehicle.
Vehicle respondsThe car may unlock or authorise starting if its system accepts the relayed signal.
Lost or stolen key response
Act on the part of the system that has been compromised.
Confirm what is missing
Identify whether the missing item includes a blade, remote, transponder or smart key.
Check vehicle access risk
A deleted electronic key may still have a blade capable of opening a mechanical lock.
Replace essential access
Create a new working key so the vehicle remains usable.
Remove authorisation
Delete missing keys from supported vehicle memory where appropriate.
Add sensible layers
Consider secure storage, physical deterrents and manufacturer-specific settings.
Our security principles
Secure programming requires control.
The safest key work is not only technically correct—it is also properly authorised and carefully documented.
Ownership and authority
Identity and lawful authority are checked before access, cutting or programming work begins.
Key-learning procedures
Programming is carried out using suitable equipment and the correct process for the supported vehicle.
Every function verified
Starting, locking, unlocking, blade operation and supported proximity features are checked.
Clear security guidance
You are told what has changed, what has not changed and what precautions may still be sensible.
Quick risk check
How exposed is your key routine?
Indicative result
Complete the checkChoose an answer for each question to see practical recommendations.
Practical protection
Small habits can reduce unnecessary risk.
Store keys deeper inside
Avoid routinely leaving keyless-entry keys close to external doors and windows.
Test signal-blocking storage
Stand beside the vehicle with the key inside the pouch and confirm the car does not detect it.
Never store a spare in the car
An accessible spare can turn a break-in into an authorised start.
Protect key information
Avoid posting clear images of key blades, registration documents or identifying labels online.
Respond quickly to lost keys
Ask whether deletion from vehicle memory is supported and whether mechanical access remains possible.
Layer protection
Combine secure key routines with visible physical deterrents and sensible parking choices.
Clear, honest advice
No single product makes a vehicle theft-proof.
Vehicle security works best in layers.
Key deletion, secure storage and careful programming can reduce specific risks, but they do not replace every mechanical, electronic or behavioural precaution. The correct response depends on the vehicle, the missing key type and how the car is normally stored.
We will explain the available key-related options without promising unrealistic or absolute protection.
Frequently asked questions
Vehicle security, explained.
Practical guidance about keys, programming and theft-related concerns.
Can a lost key be removed from my vehicle?
On many supported vehicles, a missing key can be removed from the authorised key list so it no longer starts the engine.
Will deleting a key stop its blade opening the door?
Not necessarily. Electronic deletion does not change the physical lock, so a previously cut blade may still operate it.
What is relay theft?
It is an attack that attempts to extend communication between a proximity key and vehicle so the car behaves as though the key is nearby.
Do signal-blocking pouches work?
A suitable, undamaged pouch can reduce signal transmission, but it should be tested regularly because materials and closures can wear.
Should I keep my keys in a metal box?
Some containers may reduce signal transmission, but effectiveness varies. Test any storage method against the actual vehicle.
Can keyless entry be switched off?
Some vehicles allow keyless functions to be disabled or temporarily suspended. The method depends on the manufacturer and model.
Is it safe to buy a used key online?
Compatibility, locking status and programming limitations vary. A used key may not be reusable on your vehicle.
Can somebody copy my key from a photograph?
A clear image may reveal useful blade-profile information. Avoid sharing detailed key photos publicly.
What should I do after my keys are stolen?
Secure the vehicle, report the theft where appropriate, arrange replacement and ask whether missing-key deletion is supported.
Can you add another key securely?
Yes, on supported vehicles and after ownership or authority has been verified.
Does a steering lock help?
A visible, good-quality physical deterrent can add another layer, although no single device guarantees prevention.
Do you install aftermarket immobilisers?
This page focuses on key-related security services and advice. Contact Odell Automotive to discuss the exact protection work currently available.
Concerned about a lost key?
Secure the key.
Understand the risk.
Call with your registration, key type and concern. We will explain the practical key-related options available for your vehicle.