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Originally Posted by mrogers
Huh? I assume this is an idea, not a real service, because I don't think phones can trasmit on the same RF freqencies as car key fobs. But, it is a great idea! Unforunately, it wouldn't work on many cars because more and more (like mine) change the RF code every time you put the key in the ignition to keep someone from using a scanner to read the signal and then try to get into your car later--it won't work because the code's been changed!
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If this is the case, and the RF code has been changed since you last started the car, wouldn't that theoretically (sp) make your SECOND remote useless? How would your SECOND remote know when to code hop with the original remote? Say you use your original remote 5 times, then used your SECOND remote to open your doors the 6th time U enter, how does the 2nd remote know what code to use now?