7eregrine
The man, the myth, the legend
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- Land of Cleve
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- 2016.5 CX5
Don't believe me? Remove the battery from your fob and see if it works by placing it near the Start switch.
Why would I doubt you? I clearly stated I was guessing here.
Don't believe me? Remove the battery from your fob and see if it works by placing it near the Start switch.
But there's a "Battery Dead" warning. Is there a way to detect the key if its battery is dead? (Honest question, there's RFID technology that does not require a power source.) There's got to be a way to know there's a key present to tell you that its battery is dead.
Close, but no cigar. (1995 called and asked me to explain it to you)
There are two independent systems working in your fob.
One uses battery power to 'broadcast' the signal to the car that it's ok to start once it 'sees' that the car is requesting authentication.
The other system uses a proximity RFID chip in the fob that doesn't require battery power.
Does it actually say "Battery Dead"? If so, I could see that warning coming up when the fob no longer unlocks the door and you have to use the physical key. Maybe the Battery Dead warning is triggered by the RFID.