2019 Subaru WRX
Key Replacement - Save vs Dealer in Ventura County

2019 Subaru WRX Smart Key Replacement - Fast, Affordable & Professional

I was already in Camarillo when the call came in from Las Posas Estates. A guy out there had his 2019 WRX sitting in the driveway and was getting nothing from the start button. Not a warning, not a crank, just silence. He had already swapped the CR2032 himself, which was the right first move. It just did not fix it this time.

When I got there, the fob was reading fine on my tester. Battery was good, seated correctly, signal was there. But when he held the fob to the start button the way the manual says to do when the battery is low, the car still would not respond. That told me the issue was registration, not hardware.

I connected through the OBD port and pulled the key memory. The fob in his hand was not listed as a registered key at all. Somewhere along the way, likely a prior owner or a shop that did incomplete work, the pairing had been wiped or overwritten and never finished. The car had no idea that fob existed.

I re-enrolled the fob, confirmed the push-button start was responding normally, walked all four buttons, and checked that the door handles were picking up the fob passively. Everything came back clean. Total time at the car was about 25 minutes.

He mentioned a shop had looked at it a few weeks earlier and told him he needed a whole new fob. He did not. He just needed the right equipment and someone who actually finished the job.

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