Key fob not working

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Key fob not working

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Hyundai Forums >> Vehicle Line Up >> Hyundai Sonata >> Key fob not working

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Key fob not working - 12/27/2007 12:48:29 PM

TigerStare

Posts: 4
Joined: 12/27/2007
Status: offline

The 3-button fob will unlock the doors just fine, but will not lock them. The red LED indicator illuminates when the lock button is pressed. Could this be a faulty fob, or should I suspect something with my vehicle?

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02 Sonata LX V6 2.7

Post #: 1

RE: Key fob not working - 12/28/2007 6:35:34 AM

madindian1

Posts: 267
Joined: 12/26/2007
Status: offline

it's probably be your lock relay is not working. the system uses two relays one for lock the other for unlock. sometimes one work without the other.

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if i'm not doing **** at work i will help you

(in reply to TigerStare)

Post #: 2

RE: Key fob not working - 1/1/2008 8:01:28 AM

Doohickie

Posts: 856
Joined: 2/6/2006
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Or it could be a problem with the alarm. Are you sure all the doors, hood, and trunk are fully closed? If one not fully closed and the switch isn't pressed, the alarm will not arm (and I think the locks will not lock).

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Post #: 3

RE: Key fob not working - 1/1/2008 8:41:53 PM

madindian1

Posts: 267
Joined: 12/26/2007
Status: offline

if the hood or the trunk is not closed properly the doors will still lock but will not arm the alarm system.

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if i'm not doing **** at work i will help you

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Post #: 4

RE: Key fob not working - 1/2/2008 9:29:22 AM

TigerStare

Posts: 4
Joined: 12/27/2007
Status: offline

quote:

t's probably be your lock relay is not working. the system uses two relays one for lock the other for unlock. sometimes one work without the other.

Okay. Could you tell me where to find those relays on my 02 Sonata, so I can check 'em?

I got it. Found info elsewhere on the forum here: http://www.hyundaiforum.com/m_295/tm.htm

< Message edited by TigerStare -- 1/2/2008 1:31:22 PM >

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02 Sonata LX V6 2.7

(in reply to madindian1)

Post #: 5

RE: Key fob not working - 1/2/2008 6:26:56 PM

madindian1

Posts: 267
Joined: 12/26/2007
Status: offline

you have to remove the under dash/under steering wheel. when you remove it, remove metal guard, remove fuse box, behind fuse box there are two white relays one is for lock the other is for unlock.

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if i'm not doing **** at work i will help you

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Post #: 6

RE: Key fob not working - 1/2/2008 7:39:50 PM

TigerStare

Posts: 4
Joined: 12/27/2007
Status: offline

Thanks, madindian1

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02 Sonata LX V6 2.7

(in reply to madindian1)

Post #: 7

RE: Key fob not working - 1/2/2008 8:38:40 PM

madindian1

Posts: 267
Joined: 12/26/2007
Status: offline

no problem like my signature says

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if i'm not doing **** at work i will help you