Are the S650 Key Fobs "Motion Sensing"?

[DCS]

I have been reading that some manufacturers are using motion sensing key fobs. If the fob isn't moved for ~60 seconds, the fob stops transmitting. This prevents fob Cloning.

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[Gregs24]

All of the EU/UK Ford fobs are now, but that doesn't mean the US made ones are!

 

[DCS]

All of the EU/UK Ford fobs are now, but that doesn't mean the US made ones are!

I had read that EU/UK were onboard with this strategy. Not sure why US isn't. The Fobs are engineered in the US!

 

[roket]

if they are motion sensing, Rotunda makes no mention of it except on the part MR3Z-15K601-BB where it mentions a motion sensing and jamming feature. someone would have to do some testing to find out if there is motion sensing

 

[DCS]

if they are motion sensing, Rotunda makes no mention of it except on the part MR3Z-15K601-BB where it mentions a motion sensing and jamming feature. someone would have to do some testing to find out if there is motion sensing

I read about one test where you put the Fob on the ground near the vehicle so that you can open the car door (as a distance test). Then leave the Fob on the ground for "some time" - 1 to 2 minutes and then try to open the door without moving the Fob. If you can't open the door, the Fob is motion sensing.

 

[dusman59]

I would think Ford would want to state this in some of their literature as a benefit. The only reason I would think they wouldn't have this feature is cost savings.

 

[DCS]

I would think Ford would want to state this in some of their literature as a benefit. The only reason I would think they wouldn't have this feature is cost savings.

Agree.

 

[Dena]

There is a very good reason for motion detection in the key fob. They communicate with something like Bluetooth and while the transmitter power is only somewhere around 2 milliwatt, that is enough to run the battery down pretty quick. Accelerometers are now small solid state devices and you only need to wake them up every once in a while to see if the direction of the fob has changed. If it has, turn the transmitter on for a few minutes. If not, leave the fob off to conserve the power.
I have to older fob which would get about 10 years out of a battery. They simply didn't transmit unless you pressed a button. They worked but it's different having a car that knows you're approaching.

 

[roket]

just tested it, there is no motion sensing. i put my keyfob on the ground for 2 mins and it still unlocked with the keyless entry

 

[Dena]

Had a headache last night so I wasn't firing on all 8 but there is a second way the FOB might function. The car could broadcast are you there? When the FOB hears it, it responds yes I am. If the FOB only responds when it hears it' id being called and it responds with a different ID. It would be very difficult to get the information needed to fake the FOB.
If this exchange takes place at a frequency less that 200MHm, I have the equipment to detect it. If they use bluetooth, that is well out of the range of what I have. I would suspect bluetooth as you don't need much of an antenna and parts are off the shelf but I think tire sensors run at a much lower frequency so that is vey possible.

 

[ZBOBMAN]

Not sure if this is what you mean. When I put the fob in my pocket and go out to the garage, I hear my stang churp and the doors unlock.

 

[DCS]

Not sure if this is what you mean. When I put the fob in my pocket and go out to the garage, I hear my stang churp and the doors unlock.

Nope. That is what the Fob is supposed to do. However, if you put the Fob down and it remains stable/not being moved, it is supposed to stop transmitting until it is moved again. If the Fob has this feature. Otherwise, the Fob never stops transmitting and can be cloned by a scanner.

 

[LETHAL]

Do not believe Mustangs are on any hot lists.

 

[DCS]

Do not believe Mustangs are on any hot lists.

I hope you are right.

 

[Eurasianman]

Do not believe Mustangs are on any hot lists.

This. Dodge Challengers and Chargers are more prone to car jacks than Mustangs.

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