It is possible, but highly unlikely. Most key fobs use a rolling code security feature with billions of combinations. Basically two cars would have to send out the same security code (billions of possibilities) for the key fob to be able to respond to both cars.
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Can a BMW key fob be reprogrammed to another car?
You could reprogram a key fob to a different vehicle as long as the key is the same for the vehicle. In this case, if the key can go into the doors and unlock them, then you would need to do the following: Remove the battery from the key fob and put it back in (unless you put in a new battery)
Can one key fob work for two cars?

How far does BMW key fob work?
As well as locking and unlocking your car, the Display Key lets you access vehicle information remotely. See whether the doors are locked, schedule when your air conditioning should come on and check your fuel level, all from a distance of almost 1000ft.
Can I use a used BMW key fob?
You cannot reprogram an used key from another car.
Are BMW keys reprogrammable?
Press any button on your key fob to reprogram it. The alarm light should flash briefly to acknowledge a successful reprogramming. You can now leave the programming mode by leaving the driver’s door open while shutting the trunk door. However, close the driver’s door immediately after the trunk door is shut.
Can other people unlock my car door with their remote?
The reason: it simply doesn’t happen very often. While it’s theoretically possible, the technologies used in modern remote entry systems — like rolling codes and data encryption — make a theft of this nature pretty difficult to pull off.
How far do key fobs transmit?
The signal range of a common fob is between 30 and 60 feet. However, if your remote’s battery runs out, it will reduce the range of your fob’s operation. You may need to press the button on your fob numerous times before your vehicle recognizes the signal.
Can thieves unlock your car remotely?
Thieves can fool your vehicle into unlocking by capturing the signal emitted by your key fob and relaying it to your car.
How do car keys not unlock other cars?
However, as new cars are made so is new anti-theft technology such as transponder chips. These small chips placed inside the keys mean that the ignition can not start with a different key, even if it has managed to open the doors.
Are key fobs universal?
Since each keyless entry remote is programmed to fit your exact car, a replacement key fob will need to be compatible with your car’s systems. A standard key fob has separate buttons for locking, unlocking, opening the trunk and a panic button that will sound your car’s horn repeatedly to alert others.
How do you erase memory from a key fob?
Press and hold the memory button (located on the driver’s door) you want to delete for five seconds. A tone will sound when the memory wipe is complete. Continue to hold the button until you hear a second tone.
Is there a way to find a lost BMW key fob?
Nope. The fobs have no speaker, so even if there was a way to initiate reverse communication, there’s nothing you could do to make it findable.
How do you start a BMW 328i with a dead key fob?

How do you start a BMW 328i without a key fob?

How much are BMW key fobs?
Several BMW dealers said that the more advanced security features embedded in the fob for a 2020 X5 justify the roughly $500 they charge to replace and program one.
How do you open a locked BMW door?

Can key fobs be reprogrammed?
Key fobs, like other electronic devices are likely to malfunction with time because of losses of signal. When such cases happen, one can easily reprogram the key fob and use it without having to call an auto locksmith.
Can you reprogram a BMW key to another BMW?
Hold the unlock button and press the BMW logo 3 times before releasing the unlock button. If you have more than one BMW key fob that you would like to program, all you have to do is repeat step 3 within 30 seconds from the original key programming. The process is complete once you turn on the ignition.
Can you track a lost BMW key?
Some vehicles store more information in their keys and computers than others. BMW in particular is known to store more of your data in the key fob than any other car company. For any vehicle that has a key that promotes keyless entry and push to start features, your key is very much trackable to anyone near you.
How do you program a 2015 BMW key fob?
New BMW Key Fob Programming Steps Then, take your key out of the ignition. Press the BMW logo on your BMW key fob 3 times while holding down the unlock button. Let go of the unlock button after the third time you’ve pressed the BMW logo. Then, turn on the ignition, and your new key should be paired with your BMW!
What happens if you lock your key fob in your car?
With your key fob locked in the car, there are three primary solutions. You can move the working key toward a sensor location, manipulate the interior door switches/buttons, or call a locksmith. Doing the work yourself requires tools and time, so if you do not have both, contact a locksmith.
Who can get into my locked car?
You have many options for getting into your car when your keys are locked inside, including a locksmith, tow service, your dealer, a family member with a spare key, or even roadside assistance through your insurer. It’s inconvenient, but it’s not the end of the world.
Is it possible to open a car door with a cell phone?
Is it possible to unlock a car door with my cell phone? Yes, some cars have this already, but you would need to buy a car with this functionality. Many of the new hybrid/plug-in hybrid/electric cars have this functionality.
Can you disable BMW keyless entry?
If you would prefer to disable this feature, just press the small button above or adjacent to the Start Stop button.