Ford Key fob disable ?

[Left Coast Geek]

Is there any way to switch the Ford keyfob 'off' entirely ? like my wife's 2016 Mercedes, which is also push to start etc etc, you double click the lock button, you get a long flash from the tiny LED on the fob, and the fob shuts off entirely so it won't do proximity unlock or anything, saves the fob batteries when the key is in storage, etc.

 

[Rob6805]

That's a neat trick. How do you turn it back on?
And I don't think the Ford fobs have such a feature.

 

[Left Coast Geek]

That's a neat trick. How do you turn it back on?
And I don't think the Ford fobs have such a feature.

on the MBZ, you push the lock button again, and the LED short blinks and it unlocks the fob.

apparently even newer MB's have a motion sensor in the fob, and if its motionless for over a minute it disables itself entirely, move it and it wakes back up.

 

[2020-MAX-Limited]

Just remove the battery

 

[Left Coast Geek]

my dongle is in a case/cover thats a bit of a pain to take on and off.

 

[nationalgallery]

Amazon.com

I use these, they're great, and block I/O signals 100%.

 

[2020-MAX-Limited]

saves the fob batteries when the key is in storage, etc.

I was answering for this situation: when the fob is in storage, just remove the battery

 

[Mr Big]

Is there a reason to turn the FOB off? The batteries are so cheap. A six pack is less than $6 and will last mor than 6 years.

 

[Left Coast Geek]

The spare fob just sits around and never gets used, but we bring it in the camp trailer when we're traveling just in case the normal fob gets lost or misplaced. was sorta worried the fob in the fiberglass trailer might be close enough to actuate the locking. And, the spare fob just sits around unused for months on end.

 

[nationalgallery]

There's devices that allow car thieves to scan for remotes from outside a building or house; the device communicates with the remote and then can clone it. There's videos showing thieves outside houses at night scanning for remotes—when they find one they can clone it in seconds—and then backing the car out of the driveway and they're gone. The whole process usually takes about 2 min. The faraday pouches block all signals in and out.

 

[lobsenza]

Why not hide the keyfob in the SUV in a faraday pouch and use the keypad to unlock the vehicle? The only way this won't work is if the battery is dead.

 

[Happy Dog]

Amazon.com

I use these, they're great, and block I/O signals 100%.

A few wraps of aluminum foil does the same thing

 

[Danm355]

Is there any way to switch the Ford keyfob 'off' entirely ? like my wife's 2016 Mercedes, which is also push to start etc etc, you double click the lock button, you get a long flash from the tiny LED on the fob, and the fob shuts off entirely so it won't do proximity unlock or anything, saves the fob batteries when the key is in storage, etc.

I've had key fobs for over 20 years and never had to replace a battery.

 

[Yosemite Sam]

First you have to understand how the "modern day" vehicle key fob works. Most vehicle key fobs use two different
methods to access your vehicle and start it.
The first uses RFID technology that acts as an RF transponder. It never emits a "signal" until it's in close proximity to
an RFID tranmitter (The vehicle). Once the fob is within the RF (radio frequency) zone of the vehicle it is energized and emits
an RFID code that is received by the vehicle's transponder. If the codes match then you can gain access. Please note: the
fob does not require a battery nor does it have to be powered externally, it only activates (transmits) a code when it is in
the near field (usually a few feet) of the vehicle's constantly transmitted RFID transmitter. The fob is powered by the magnetic
RF field generated by the vehicle, its code is programmed by the factory OR the user using the current fob so that the two
can communicate and match codes. The usual RFID frequency is 125kHz, a very low frequency located below the
standard AM broadcast band.
The second method (when you use a button on the fob) transmits an Ultra High Frequency (UHF) RF code to the vehicle on
one of three different frequencies: 315 mHz in the U.S. and Japan and 433.92 mHz in Europe. Please note that this method
DOES require a battery in the fob because it initiates the exchange.

THERFORE, as long as you are not pushing one of the keyfob's buttons there is no battery drain on the fob. None, zip
nada. Once you press a button the fob there is a momentary draw of current on the fob and then it returns to none, zip
nada.