Tamas wrote: ↑Sat Mar 23, 2024 10:14 pm
Just being curious: how does the key know that it is not moving? I guess there is no GPS unit or motion detector in the key, so what makes it decide that it should go to sleep and stop transmitting? Are you sure this information is correct? I wish you are right because it makes the volvo more secure against theft, only the explanation is missing for me...
MY2020 onwards Volvo keys are equipped with motion sensors. From the key manual:
“Relay-Station-Attack (RSA) countermeasure: when the key has been stationary without movement for a defined time (timer configurable), the motion sensor will deactivate the LF front end in the keyfob and the key will not react to Keyless Entry or Start LF triggers from the vehicle. Only when motion has been detected by the implemented motion sensor, the LF front end of the keyfob will become active for a defined time.”
OxfordT wrote: ↑Sat Mar 23, 2024 2:07 pm
Left the tailgate open and the car unlocked. The car did not lock itself after 5 minutes. I then closed the tailgate and the car still did not lock itself after 5 minutes. Conclusion if you forget to lock the car it will do so after a couple of minutes IF the tailgate (and maybe side doors) is fully closed. Therefore I can only conclude we did not lock the car and the tailgate was not fully latched. From now I will check if the alarm light is working after I lock the car.
You can see that alarm flash in the app (on AAOS cars anyway).
Tamas wrote: ↑Sat Mar 23, 2024 10:14 pm
Just being curious: how does the key know that it is not moving? I guess there is no GPS unit or motion detector in the key, so what makes it decide that it should go to sleep and stop transmitting? Are you sure this information is correct? I wish you are right because it makes the volvo more secure against theft, only the explanation is missing for me...
MY2020 onwards Volvo keys are equipped with motion sensors. From the key manual:
“Relay-Station-Attack (RSA) countermeasure: when the key has been stationary without movement for a defined time (timer configurable), the motion sensor will deactivate the LF front end in the keyfob and the key will not react to Keyless Entry or Start LF triggers from the vehicle. Only when motion has been detected by the implemented motion sensor, the LF front end of the keyfob will become active for a defined time.”
Tamas wrote: ↑Sat Mar 23, 2024 10:14 pm
Just being curious: how does the key know that it is not moving? I guess there is no GPS unit or motion detector in the key, so what makes it decide that it should go to sleep and stop transmitting? Are you sure this information is correct? I wish you are right because it makes the volvo more secure against theft, only the explanation is missing for me...
MY2020 onwards Volvo keys are equipped with motion sensors. From the key manual:
“Relay-Station-Attack (RSA) countermeasure: when the key has been stationary without movement for a defined time (timer configurable), the motion sensor will deactivate the LF front end in the keyfob and the key will not react to Keyless Entry or Start LF triggers from the vehicle. Only when motion has been detected by the implemented motion sensor, the LF front end of the keyfob will become active for a defined time.”
MY2020 onwards Volvo keys are equipped with motion sensors. From the key manual:
“Relay-Station-Attack (RSA) countermeasure: when the key has been stationary without movement for a defined time (timer configurable), the motion sensor will deactivate the LF front end in the keyfob and the key will not react to Keyless Entry or Start LF triggers from the vehicle. Only when motion has been detected by the implemented motion sensor, the LF front end of the keyfob will become active for a defined time.”
I saw a video on this a few years ago and typically it's about 5 minutes. There is no reason for it to be any longer really
Don't think you even need a key in the vicinity of the car (physical or relay-attack) with some of the "kits" which are now circulating on the dark-web - doors open, alarm disabled, access to the OBD port...programme a new key and off you go!
It's getting simpler for those determined to take your car - manufacturers are way behind the organised gangs.
Unfortunately with a total lack of deterrent and very low chance of getting caught if someone wants to break into your car no cameras or alarms are going to stop them.
Just take a look at crime that happens in broad daylight in full view of people
I’m sure they’ll be someone to film them taking it for social media likes though
Volvo XC40 T5 R-Drive Pro. Thunder Grey with lots of extras
