|
Usually, RKE and Immobilizer are two separate systems.
Touching the "button" on the door handle, the car's remote keyless entry system will ping the remote with the antenna that's inside the door handle, and the remote will answer back and remote unlock the car.
Starting the car uses an entirely different antenna inside the car. Some companies put it in the button, some put it in the cupholder, some put a slot for the key under the dash, that's the antenna you have to get close to when your remote battery dies, because that antenna can provide the energy for the immo transponder to answer back, like an RFID tag. In the picture above, that's the electrical key oscillator.
Keep in mind, a key can go bad. I assume you've only got one? You couldn't possibly have omitted trying the other one right? You couldn't possibly have forgotten to tell us about it right?
Hint: even an independent shop can "test" a remote. At work I used a Bartec Tech400 Pro to program TPMS sensors and that has functions to "listen" to an RKE signal, or a car's antenna pinging a key and it answering back. Also, many pro-level scan tools will be able to view live data and trouble codes for the smart key system. There is literally no need for this "maybe it's the body harness give us 3000$" bullshit.
|