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      09-22-2021, 06:45 PM   #1
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How far away can you guys unlock your car from?

Random question. But my car doesn't want to lock or unlock unless I'm within like 10 feet. My batteries in my car and remote are new. So that's unlikely the issue. If your guys' unlocks from the same distance then I know it's just BMW engineering at its finest.
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      09-22-2021, 09:20 PM   #2
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I'm able to lock/unlock from inside my house, which is about 30 feet from the car. I actually bought an RFID blocking box to hold the key fob because I'm paranoid.
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      09-22-2021, 09:27 PM   #3
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10 feet sounds about right for me. I'd say my range is around there.
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      09-22-2021, 10:00 PM   #4
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If you hold the remote against the underside of your chin it will extend the range. Your body acts as an antenna.
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      09-22-2021, 11:14 PM   #5
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Quote:
Originally Posted by jcordier View Post
Random question. But my car doesn't want to lock or unlock unless I'm within like 10 feet. My batteries in my car and remote are new. So that's unlikely the issue. If your guys' unlocks from the same distance then I know it's just BMW engineering at its finest.
About as close as I can reach and unlock it don't feel like replacing my battery but every since I owned the car it's no farther then 10 foot
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      09-23-2021, 02:39 AM   #6
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Quote:
Originally Posted by _ObiJon View Post
I'm able to lock/unlock from inside my house, which is about 30 feet from the car. I actually bought an RFID blocking box to hold the key fob because I'm paranoid.
Interesting. I wonder why yours goes further. Maybe not a whole lot of Wi-Fi around you interfering it, or something.?
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      09-23-2021, 07:45 AM   #7
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With clear line of sight about 200 feet.
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      09-23-2021, 07:50 AM   #8
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Quote:
Originally Posted by Billfitz View Post
With clear line of sight about 200 feet.
I was just about to chime in too, mine responds from quite a ways out, def more than 100 feet.
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      09-23-2021, 08:02 AM   #9
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Similar long ranges here. I accidentally unlocked my car from my second floor office while the car was in the lot across the street. Line-of-sight distance was probably at least 100ft...maybe more, and through a sealed window.
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      09-23-2021, 09:51 AM   #10
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Quote:
Originally Posted by Billfitz View Post
With clear line of sight about 200 feet.
What kind of battery you using I gotta get one of those lol
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      09-23-2021, 10:56 AM   #11
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It's a function of the power output of the transmitter in the fob rather than the battery, unless the battery is losing it's charge. You just need a battery powerful enough to allow the transmitter to energize to it's max capacity.

I've noticed I can unlock my car at ranges well beyond any other car I've owned. As far as I know there is nothing special about the FOB and I'm running on whatever batter was in it when I bought the car CPO. I can get at least 100ft, maybe farther as-is.
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      09-23-2021, 11:04 AM   #12
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0 ft. My batteries are dead-low ahah
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      09-23-2021, 11:14 AM   #13
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new energizer battery, car park 200ft can open close boot and lock/unlock doors/windows etc
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      09-23-2021, 04:09 PM   #14
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Probably 20 car length.
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      09-23-2021, 05:45 PM   #15
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That technically depends on what you want to use to unlock the car. Using the fob, it is at least 100 feet outside. If using the bmw app then that would be a much longer distance.
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      09-23-2021, 07:13 PM   #16
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Quote:
Originally Posted by im_an_alien View Post
I was just about to chime in too, mine responds from quite a ways out, def more than 100 feet.
Well more than 100 feet here as well.
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      09-23-2021, 07:30 PM   #17
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key fobs can suffer from "harmonic interference". They are weak transmitters and even thought they dont share the same radio band as say a wifi router it may still interfere with it. Any strong RF source nearby can overload the receiver in the vehicle as well.

https://whatis.techtarget.com/definition/harmonic

Find yourself a big parking lot away from anything you think my be putting out a signal or blocking it and test your range there.

interference is a pita to track down and without special equipmnt it can be very frustrating as it could be coming from anywhere...
https://www.caranddriver.com/news/a2...-interference/

Last edited by steveindabmer; 09-24-2021 at 10:51 AM..
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      09-25-2021, 11:13 AM   #18
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around 50 meters
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      09-27-2021, 02:24 PM   #19
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around 100metres, depends on battery as well.
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      09-27-2021, 03:06 PM   #20
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I never use the keyfob ever. I only put my hand on the door handle.
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      09-27-2021, 04:06 PM   #21
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I have unlocked my car from a spot far out of sight at least 50 yards. When I see the car, I can see its unlocked. BMW makes some powerful fobs. LOL
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      09-27-2021, 05:09 PM   #22
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Quote:
Originally Posted by frchdragon View Post
I never use the keyfob ever. I only put my hand on the door handle.
Me, too.
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