Hi everyone !
So my wife's 2012 Sonic only came with one key from the dealer. We bought a key blank on Amazon and got it cut.
All the instructions I saw online made it seem extremely easy to program the key : start the car with the working key, take it out and put the new key in and start the car within 10 seconds of taking the other one out.
As luck would have it, this didn't work for me !
When putting the new key in, it would turn and start the car but the immobilizer light never did go off... tried leaving it in there for a while, still nothing...
I suspect you need the "Master" or primary key to complete this process and that my wife got the "second" key when she purchased the car but not the "master".
I did see a process to re-program the key without a working key consisting of leaving the new key in the ignition on for 10 minutes at a time, 3 times in a row and this would make the new key the "Master" key but this would also reset the working key (which scares my wife thinking her key won't work anymore and she's afraid we'll be stuck with no working key at all...).
So what am I missing ???
Am I correct assuming the programming difficulties come from the "secondary" key ?
How can I get this damn new key to work !!!???
Thanks in advance !
BluezMax
So my wife's 2012 Sonic only came with one key from the dealer. We bought a key blank on Amazon and got it cut.
All the instructions I saw online made it seem extremely easy to program the key : start the car with the working key, take it out and put the new key in and start the car within 10 seconds of taking the other one out.
As luck would have it, this didn't work for me !
When putting the new key in, it would turn and start the car but the immobilizer light never did go off... tried leaving it in there for a while, still nothing...
I suspect you need the "Master" or primary key to complete this process and that my wife got the "second" key when she purchased the car but not the "master".
I did see a process to re-program the key without a working key consisting of leaving the new key in the ignition on for 10 minutes at a time, 3 times in a row and this would make the new key the "Master" key but this would also reset the working key (which scares my wife thinking her key won't work anymore and she's afraid we'll be stuck with no working key at all...).
So what am I missing ???
Am I correct assuming the programming difficulties come from the "secondary" key ?
How can I get this damn new key to work !!!???
Thanks in advance !
BluezMax