Range Of SmartKey??

[DuFFmAn]

Neither had I. Seems it's simply not possible:

Can You Unlock Your Car Door with a Cell Phone? - Urban Legends

I'm really tempted to try...

 

[moonloops]

Neither had I. Seems it's simply not possible:

Can You Unlock Your Car Door with a Cell Phone? - Urban Legends

Thanks for the common sense post

 

[Rory]

My other car (not the Merc) has wireless keyless ignition - if you carry the fob on your person the car will unlock when you pull the door handle, and you can then start it without removing the fob from your pocket. I believe some Mercs have this as well..

Problem is - the spare fob usually hangs next to our kitchen door, and when the car is parked right outside the house, someone passing by could get into it and start it - although hopefully he won't get very far.

To be precise, when the vehicle is driven out of range of the fob, there is an alarm on the dash saying 'card not present', but it does not actually stop the car or the engine... I am assuming the car would eventually stop, though I haven't actually tested it.

Have you tried to get in and start it? Even if you can get in, these systems are not supposed to allow the car to start unless the fob is physically within the vehicle.

Once it does start it won't stop itself regardless of how far it's driven.