Mobile installation by appointment in Nashville and nearby citiesGPS & kill switchesViper modelsService areas(615) 403-5381
Nashville Car Alarm
Car Alarm and Theft Guides · 2 min read

Keyless Relay Theft: How It Works and How to Defend

Thieves can capture and relay your key fob signal. Simple habits and add-ons reduce the risk.

  • Plain-English guide
  • 2 min read
Keyless Relay Theft: How It Works and How to Defend

The trick

A smart key constantly broadcasts a short-range signal. In a relay attack, one thief stands near your house to pick up the signal and another stands by your car with a device that relays it, so the car thinks the key is nearby.

Easy defenses

Keep keys in a signal-blocking pouch or box at home. Park inside a garage when you can. Use a steering-wheel lock if you wish. Turn off keyless features if your car lets you.

Aftermarket layers

A starter interrupt or hidden kill switch stops the engine even if the car is unlocked and started. GPS tracking helps with recovery.

A simple home routine

Put your keys in a pouch or a metal box when you walk in. Keep the spare in one too. Park in the garage if you can. If your car has a setting to turn off keyless entry when the fob is idle, learn how it works.

Quick answers

Does a signal pouch work?

A good pouch blocks the signal. Test it by trying to open the car with the key inside.

Does an alarm help here?

A starter kill helps more than an alarm for this kind of theft.

Contact and appointments

Tell us the vehicle. We come to you.

Send the form or call. We confirm your vehicle works with the system you want, suggest the right Viper model and book a mobile installation by appointment in Nashville or a city near you.

  • Installed where you parkYour driveway, your workplace or your lot.
  • Compatibility firstWe check your year, make, model and key type before anything is ordered.
  • Every Viper model in stockCall or send the form to ask about any model you see here.
(615) 403-5381Prefer to talk? Call us.

Request a mobile installation

It takes about a minute.

By sending this form you agree that we may contact you about your request. See our privacy policy.

Call