Question about 2007 Hyundai Sonata Limited Sedan

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I lost my Hyundai key & fob a few weeks ago with no other keys or identification on the key ring. My grocery store has one found there, but my car is out of the area at this time. How can I find out if the key they found goes to my car?

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If u have an extra key bring it to match it up

Posted on Feb 01, 2010

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Posted on Jan 02, 2017

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Any computer can tell about remot

remote what? and no YEAR CAR> really?
radio, head end ?, key fobs. what ?
why not post the symptoms. why not say that.

if this is RKE , remove key entry issue?
and you lost the 2nd one that came with car? did you, (more symptoms?)
is it a door lock failure or car starting or running failure.
no there is no tester, (dealer has one) but no real tester
at my local auto store they have this POS tester that only tests
the lock transmitter for RF transmission energy, near worhless test if ever, did you replace the RKE remote battery yet, (second fob lost)

making a real tester would be hard with 10,000 different car key protocols, in force. very very hard to do. and the new cars
have secret ROLLING encrypted key messages. (impossible )

ON my car (a very strict 08) you can make a 3rd fob or transponder key at any time.
if you lost the 2 spares you are screwed. never cars with only 1 or 2 fobs, on mine its 3 fobs min. and 8 fobs max.
i can run 1 real fob and 3, $13 key only transonder keys and that works too. making me DIY full time, forever.

not posting year is big error here.
vast generational change by years.

to bet best help post car make , year, and engine size if engine question. then state what is wrong.
my car will not crank, or cranks and runs for 2 seconds. or
my IMMO lamp shows FAULTS (read the operators guide IT TELLS you what to do with Immoblizer active warnings, yes, RTM)

May 19, 2014 | Hyundai Veracruz Cars & Trucks

1 Answer

Jetta key won t unlock door

It's the key. Go back to the mechanic and ask them to have a locksmith fix the issue at their cost.

Feb 08, 2014 | Cars & Trucks

1 Answer

Will not start

I think you have a good idea. Why not trade it in and get something more reliable.

Jun 10, 2017 | Kia Cars & Trucks

1 Answer

My 2003 Mercury Mountaineer has an electrical problem. It started about a year ago with the key fob not working, I have bought 3 and all won't work even after re-programing. now tonight I went to

Could be a windshile leak down the A-Pillar & water
gets into the delayed accy relay for the GEM Module
(Body Computer as ford called it for a few years) & you
get what you have now

Try Goolge as I did a few weeks ago for a relative
He had the same issue with the blower being on &
killing the battery

No real fix I found for the windshield leak
Seem a robot didn't put the rubber sealant
on correctly at the factory fo about 5 years
on several fords.

If it isn't water related then the GEM Module
controls all those body features

If you get a used one & match up the numbers,
you supposedly can avoid buying a reman gem
& the expense of having to reflash it to your factory
built combination

Jan 27, 2013 | 2003 Mercury Mountaineer

1 Answer

Trying to re program my key fob

A special tool (electronic box) is required to program key fobs on early model Hyundai vehicles. Check with your nearest Hyundai Service Department & arrange for key fob programming/reprogramming.

Sep 01, 2011 | 2005 Hyundai Santa Fe

3 Answers

Reprogramming key fob after changing the battery

were talking about the key fob battery.right?? try holding both the lock and unlock buttons at the same time while pointing the key fob at dashboard/drivers side door area.give it at least 10-20 seconds and see if that resets it.

Sep 14, 2009 | 2001 Mercedes-Benz C-Class

1 Answer

I have lost the only key to my car a 2002 hyundai elantra, how do i go about getting the code so that i can have another one made

Most dealers should be able to get you a key with your car's vin (vehicle identification number). You will need to provide proof of ownership (they can't sell keys to anyone asking). Your vin can be found on your registration, title, or visible on the dash, looking from outside thru the windshield.Good Luck countrycurt0

Aug 27, 2008 | Hyundai Elantra Cars & Trucks

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