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It's not that uncommon actually. Even at my car dealership this is a common problem. A couple hundred cars with the same keyless entry system parked in the sam
by LeonM 6y ago
It's not that uncommon actually.
Even at my car dealership this is a common problem. A couple hundred cars with the same keyless entry system parked in the same lot. All those cars are actively scanning for their key fob, which causes all sorts of RF collisions. I've gotten used to having to use my physical key when picking up my car at the dealership.
- moonbug 6y agothe cars are transmitting? are you quite sure?
- bondarchuk 6y agoCould be a challenge-response scheme where all cars are sending their challenge at the same time, after the initial signal from the keyfob.
- deleted 6y ago[deleted]
- LeonM 6y agoFor keyless entry, cars are always transmitting. They look for a response of a key. In case of my car, if a keys comes close enough, it lights up the doors and doorhandles.
- kevin_thibedeau 6y agoUnless you want to recharge your fob every week it has to stay passive as much as possible. The car has a bigger battery.
- harg 6y agoSome older fobs do recharge when in the car’s ignition. My old bmw did this and it was recommended to swap the keys from time to time to make sure they didn’t run out off battery. I guess this can’t be the case with the “keyless” keys though
- barbegal 6y agoWhat brand of cars are these? It's not an issue in any car park I've been to.
- mbg721 6y agoI guess that's the opposite failure case from 30 years ago, where there was a decent chance that your physical key would unlock another car of the same make/model.