Hyundai Forums banner

1 - 10 of 10 Posts

·
Registered
Joined
·
3 Posts
Discussion Starter #1
I just bought an 04 elantra and found out that it doesn’t lock with the key fob or the lock button inside the door. It unlocks just fine with the fob and button but wont lock. I tried to find a door lock relay but couldnt find one. I also checked the fuse responsible for power door locking/ sunroof but it wasnt blown. Any ideas?
 

·
Registered
Drives : Nissan NV200 Flies : Rans S6ES
Joined
·
14,330 Posts
The lock/unlock relays are built into a locking control module. I think it's at the center of the dash, behind the radio and heater controls. If you sit in the car and operate the remote you'll probably be able to hear the relays in the module clicking which should help you locate it.
 

·
Registered
2007 Honda CRV
Joined
·
4,397 Posts
Fuse 2 in dash fuse box powers up the lock actuators.
It goes to the left front lock actuator first.
It has actuator switches inside
that take input from the door key lock or ... (not sure with key fob remote)
two outputs, one to actuator to lock and the other to unlock
it switches which one is power and which one is ground to lock or unlock

So if the door lock works in one direction and not in the other
That would mean the fuse is okay and most likely the other actuators are good.
The front left actuator may be the cause of the issue. Not sure.

Would need to test the output from the left front to the other actuators.
On my schematic, it says, power wire from fuse to left front actuator is red/white or green
Ground wire is black. The two wires going to the other actuators are
blue/yellow or blue and the other is blue/white or blue/yellow or pink/white (tailgate actuator)
 

·
Registered
Joined
·
3 Posts
Discussion Starter #4
Fuse 2 in dash fuse box powers up the lock actuators.
It goes to the left front lock actuator first.
It has actuator switches inside
that take input from the door key lock or ... (not sure with key fob remote)
two outputs, one to actuator to lock and the other to unlock
it switches which one is power and which one is ground to lock or unlock

So if the door lock works in one direction and not in the other
That would mean the fuse is okay and most likely the other actuators are good.
The front left actuator may be the cause of the issue. Not sure.

Would need to test the output from the left front to the other actuators.
On my schematic, it says, power wire from fuse to left front actuator is red/white or green
Ground wire is black. The two wires going to the other actuators are
blue/yellow or blue and the other is blue/white or blue/yellow or pink/white (tailgate actuator)
Fuse 2 in dash fuse box powers up the lock actuators.
It goes to the left front lock actuator first.
It has actuator switches inside
that take input from the door key lock or ... (not sure with key fob remote)
two outputs, one to actuator to lock and the other to unlock
it switches which one is power and which one is ground to lock or unlock

So if the door lock works in one direction and not in the other
That would mean the fuse is okay and most likely the other actuators are good.
The front left actuator may be the cause of the issue. Not sure.

Would need to test the output from the left front to the other actuators.
On my schematic, it says, power wire from fuse to left front actuator is red/white or green
Ground wire is black. The two wires going to the other actuators are
blue/yellow or blue and the other is blue/white or blue/yellow or pink/white (tailgate actuator)
I asked a mechanic at the hyundai dealer today what he thought and he also said its most likely the actuator. I’ll check to see if that is the problem.
 

·
Registered
Drives : Nissan NV200 Flies : Rans S6ES
Joined
·
14,330 Posts
Fuse 2 in dash fuse box powers up the lock actuators.
It goes to the left front lock actuator first.
It has actuator switches inside
that take input from the door key lock or ... (not sure with key fob remote)
two outputs, one to actuator to lock and the other to unlock
it switches which one is power and which one is ground to lock or unlock

So if the door lock works in one direction and not in the other
That would mean the fuse is okay and most likely the other actuators are good.
The front left actuator may be the cause of the issue. Not sure.

Would need to test the output from the left front to the other actuators.
On my schematic, it says, power wire from fuse to left front actuator is red/white or green
Ground wire is black. The two wires going to the other actuators are
blue/yellow or blue and the other is blue/white or blue/yellow or pink/white (tailgate actuator)
Sorry, but this is all pretty irrelevant to the OP because his car has remote locking. That's a completely different system to the one your describing.
 

·
Registered
2007 Honda CRV
Joined
·
4,397 Posts
Sorry, but this is all pretty irrelevant to the OP because his car has remote locking. That's a completely different system to the one your describing.
It is the one I had in my Elantra.
Wasn't sure if it applied to the OP.
And the Haynes book doesn't have one for remote locking.
 

·
Registered
Joined
·
3 Posts
Discussion Starter #7
445724

This is what was clicking when i hit the lock switch. how do i test to see if this is the problem or not?
 

·
Registered
Drives : Nissan NV200 Flies : Rans S6ES
Joined
·
14,330 Posts
This is what was clicking when i hit the lock switch.
So the module clicks when you try to lock the doors, but the door locks don't operate?

how do i test to see if this is the problem or not?
Remove the module then plug it's connector back in so you can access the wires on the connector.
If the module clicks when you try to lock the doors the first thing to check is the modules power supplies. There should be three red wires attached to terminals 2, 7 & 9...see below. Make sure each of those red wires is supplying +12V to the module. The doors not locking when the module's lock relay is clicking suggests the power supply to terminal 2 might be bad. You should back probe the red wire on terminal 2 and measure the voltage while operating the lock button to make sure the voltage doesn't drop when the lock relay inside the module switches on.
445727
 

·
Registered
Joined
·
105 Posts
AutoSpark t hink that's a good test method for ETACs... I suppose we will never know from the OP what the problem was or the fix... so many people vanish after their one problem is solved, regardless of how it got solved.
 
1 - 10 of 10 Posts
Top