2016 Hyundai Sonata
Key Replacement - Save vs Dealer in San Diego
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2016 Hyundai Sonata
Key Options
Dealer-grade key for a fair, honest price
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2016 Hyundai Sonata Smart Key Replacement - Fast, Affordable & Professional
When a 2016 Hyundai Sonata key is done wrong, the car catches it. The engine cranks but cuts fuel after two seconds. The push-to-start works for a few days then throws "key not detected." Or the fob locks the doors but the immobilizer rejects the transponder during the deeper verification Hyundai runs over multiple drive cycles. A close-but-wrong chip passes the first check and fails the second.
A customer at the barbershop in Coronado had a key from another locksmith that started failing after about 10 days. His Sonata would start fine in the morning but by evening the push-to-start would intermittently refuse. He thought the car had an electrical issue, but it didn't. The key was the problem.
The other locksmith had used the wrong ID46 variant. Hyundai's immobilizer is specific about chip subtypes. I used my VVDI2 to read the bad key's chip and confirmed the mismatch. I programmed a new fob with the correct chip matched to his car's smart module. His fob, FCC ID CQOFD00120, was a 4-button smart key. He also had a weak CR2032 battery making the detection issue worse, so I swapped that too.
The replacement has been working for months and cost him $226. Dealer would have charged $405. The difference between a key that works and one that fails after 10 days is the chip generation inside it.
Save vs the Dealer on Your Hyundai Sonata Key
Get your key for hundreds less than the dealer. Same quality, same result, better price.
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1,000+ customers who trusted us
“I lost my key and called EZ Car Keyz. Marco was great. He arrived quickly, explained everything clearly, and kept me informed throughout the entire process. The service was fast, professional, and fairly priced.”
“He arrived within 30 minutes and had everything finished in another 30 minutes for two cars. Everything was programmed and tested perfectly. Cheapest price in town and very honest service.”
“I called EZ Car Keyz to unlock my truck, make a key, and sync a new key fob. They were at my location within minutes and handled everything fast and friendly. Prices were great and the service was excellent.”
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