Question about 2006 Hyundai Sonata

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2003 Hyundai Sonata Door Lock Problem

The remote will unlock doors and open trunk but will not lock the doors. I tried both remotes and had the same problem.

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  • phaley366 Nov 19, 2008

    I have the same problem with my 2002 Sonata! Replaced the batteries in the remotes & checked the fuses, both are fine!

  • Anonymous Nov 22, 2008

    I have the same problem. The doors will un-lock, but they won't lock with the button on the drivers door. All the doors need to be locked manually.

  • Anonymous Dec 18, 2008

    I have same problem. I have to manually lock doors. I cannot lock with remote or with the door button.

  • Anonymous Feb 12, 2009

    2003 Sonata same lock issue. Please, someone,,,, how do you fix this????

  • Anonymous Feb 26, 2009

    Same Problem. Batteries and fuses are all ok. None of the auto locks work. Not the fob, turning the key, or the door button. Please, if someone knows how to fix this....we need help



  • mariodep Mar 12, 2009

    same problem here in ny. doors will open with remote and door switch but will not lock with either on my 2004 sonata

  • Anonymous Mar 30, 2009

    Just the passenger side backseat door lock does not lock or unlock with the fob or driver door control. If is open, it will remain open and if locked, it will remain locked unless I manually lock or unlock it. Does the 5 yr / 60K warranty cover it?

  • Anonymous Mar 30, 2009

    2006 Sonata. I have to manually lock the real passenger door. I cannot lock with remote or with the door button.
    Does the warranty cover this? I am still under 5yr/60K.


  • Anonymous Mar 25, 2014

    The locks on the driver side lock automatic and I cannot open the door from the inside. I have to leave my window down to make sure it want lock me inside the car.

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I had this problem. Through some research and asking some service personnel I found out it is a fairly easy fix. You will need to buy a new relay switch for the door locks. The dealer will/should know what you need. They are located (two of them, buy two and replace both) on the back side of the fuse box. It is not that easy to get back there. I had to lay on my back with my head up under the instrument panel. They are visible and can be removed if you take some time and be careful. Once I knew what I was looking at, it was easy to replace and the remote works like a charm. You can go to an auto supply, like Autozone, and they should have a schematic to show you where these relays are.

Posted on Jun 03, 2009

  • Neven Zarkovic Dec 01, 2012

    Thank you very much for this solution fun2fly. The service guys did not know how to solve the problem, but following your solution I found online also the electric scheme, went to eBay and bought the relay (for $ 9.90) and convinced the service guys to do just as you said. It was solved in 10 seconds, just as much the service guy needed to reach and replace the relay. Fantastic, thank you FixYa, too!

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I own a 2005 NF 3.3ltr Sonata Elite. The vehicle has only traveled 47,000 kilometers. The problem is the door locking mechanism seems to have an intermittent locking/unlocking fault or the computer is at fault.

Once the door locks are activated by remote or on the door consol, the rear passenger door will lock and stay locked for minutes, days or weeks, it cannot be opened externally or internal by any means. Also other door/doors will not lock at random.

Hyundai have replaced two actuators including the main unit in the driver’s door but the problem continues randomly on various doors.

Hyundai customer service in Australia (NSW) said it is not possible to repair faults that cannot be seen or tested by the dealership, so unless it happens and some else witnesses it from the dealership it wont be dealt with, plus it is apparently not consider a safety issue????

Is not a car door considered an escape hatch and therefore makes it a safety problem or the vehicle unroadworthy

Posted on Nov 26, 2009

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SOURCE: My 2003 Hyundai Sonata Door locks will not lock using

I have exactly the same problem. Keyfob will unlock the doors, but will only arm the alarm once the doors have been locked manually. Central locking button on driver side door no longer works, but I hear the clicking sound you're referring to.
I took it to a mechanic, and he seemed pretty sure it was a bad master window / door lock switch. The price he quoted to replace it was $255 plus tax, and I could never bite the bullet and pay for the work, so I've just been living with the problem.
Have you solved your situation yet?

Posted on Jul 20, 2010

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1 Answer

Driver side door will not lock/unlock with the remote, but the other doors will.


no you needs a new lock actuator on that door its about $90 installed,
all the locks are on same circuit . sorry about the bad news :(

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All my remotes won't unlock passenger doors, why?


this is a problem that can appear after your car battery died, cause the car didn't reset propely, so taking the battery out and putting it back in or letting your car die again would do the trick. I tried a lot of reprogramming procedured for my remote key, none of them worked, what did the trick though was simply unlocking the doors via the all door unlock button on the passenger side door, so simple.

Apr 27, 2012 | Cars & Trucks

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I have a 2003 Hyundai Elantra. The remote locks the doors but sometimes it won't unlock the doors. I have to go to the passenger side, press lock on the remote, then press unlock (I can hear the 'clicks'...


Possible issue with the remote controller unit - main board or sub assemblies. The intermittent behavior seems to indicate that the board is erratic to detect at the same time the individual locks work at times.
So make sure all the connectors to the door and to the main board controller are tight. You can remove the main unit and check for any loose connections or clogging, specially water in all the door units or in main unit. If so dry and test.
Otherwise the main unit is a suspect.

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2003 sonata door locks won't lock with remote or lock button on arm rest, have to lock all doors manually. Will unlock with remote & lock button. not a hybrid


Hello! I suspect that Door lock Relay #1 is defective...It is common to both switch and remote activation to Lock all doors...Door Lock relay #2 is to unlock...Both relays are the same...Switch the relays and see if trouble follows...In that doors will no longer unlock...See diagram below for location...send comment with results







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Guru......Saailer

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3 Answers

My 2003 Hyundai Sonata Door locks will not lock using


I have exactly the same problem. Keyfob will unlock the doors, but will only arm the alarm once the doors have been locked manually. Central locking button on driver side door no longer works, but I hear the clicking sound you're referring to.
I took it to a mechanic, and he seemed pretty sure it was a bad master window / door lock switch. The price he quoted to replace it was $255 plus tax, and I could never bite the bullet and pay for the work, so I've just been living with the problem.
Have you solved your situation yet?

Mar 23, 2010 | Hyundai Motor 2003 Sonata

1 Answer

My 2003 sonata dont lock the door with power switch and the remote but i heard a relay'clik' but nothing happen the actuator in the door dont recieve a signal to lock the door and the 2 other


dear friend-if you say that none of the doors are working with the remote it possible that your keyless entry lost its code or the main motor is faulty.try recoding first.

Jul 08, 2009 | 2006 Hyundai Sonata

2 Answers

Have the remote for lock & unlock But the thing locks w/o touching remote. When driving, when parked, etc. it just locks by itself.


hi there
there may be a few things here
1. there may be a sensor on the drivers dor that thinks that it has been locked so it locks all the doors. this happens after a few years my sisters carnival dose the same
the locking motor witch has the sensor in it may need to be replaced
2. in australia 2004 hyundai came out with a featur called "halo"
it was designd to stop perole hijacking cars the doors would lock them selfs after the car was started and incase or accedent the doors would unlock
this may be a feature or a fult due to age
either way its not expencive
hope this helps
ricko

Jul 04, 2009 | Hyundai Motor 2003 XG350

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