Greeting and enjoy happy monday!
I got my 2011 sonata limited on the spring of 2010(very begining).
I have had smart key problem since I drove after 20,000 miles.
The first time with the smart key problem was at 20,000miles. The 2nd, 3rd, 4th time with the same problem was happened within 2 months recently.
It has been already 4 times to bring the car to dealer and they still couldn't find out what is the problem. Does anyone has similar problem with smart key recognition?

Thank you,
Mitchell from IL

 

So what's the actual problem? You said you have a problem but didn't what it was.

 

The problem is the smart key recognition.

The car doesn't recognize the smart key and doesn't start at all.

 

Is the battery in the fob good? Have you tried putting the fob in the dock?

 

I tried everything I could find out from internet such as changing battery, inserting my key in console, and using shift release.
Most of all, I talked to a mechanic from dealer shop so many time.
The mechanic couldn't find out what is the problem.

 

The only other thing I could think of is the brake light switch. It has been know to fail and is part of a Hyundai recall. Take it back to the dealer/mechanic and have them check or replace the switch.
https://www.hyundaiforum.com/forum/g...e-lights-6251/