My 2001 hyundai elantra door locks are acting up. My remote alarm is defective so I am manually locking the doors. Now I cant even lock the doors from either the driver or passenger doors. It locks on these doors have frozen. Before this it was intermittant

There should be a fuse that runs the power locks. Check and make sure it didn't blow.

Dear fellow Elantranians,
I am an original owner of a 2002 Elantra (w/anti-theft module/ETACS), and have wrestled with the same problem for months: remote will unlock, but not lock doors.
The answer to the problem, at least in my case, was a door lock relay (Part #95250-2D000) located behind the center dash, to the right and below the radio and heater/AC controls (removal and replacement reasonably easy). A simple removal of one bolt and a wire connector, and the little devil is exorcised. It's been working without a hitch for more than two weeks, and expect it to continue for eleven years as the original relay did. I purchased this relay from a local salvage yard for $14.00, but a Hyundai dealership (jimellishyundaiparts.com), will sell it to you for $36.00.
Respectfully,
Lucky Elantanian

check your battery in key

when the alarm is going off, use the key to lock and then unlock the front passenger door lock.

on that car they blow a fuse. The fuse panel is under the left side of the dash. had one the outher day in the shop.

Apparently the "LOCK" function is working normally because the burglar alarm is being activated when you 'lock' the car. Is this right?
The fact the engine won't start when the burglar alarm is activated is NORMAL If the doors will not UNLOCK front the driver's door manual switch, I believe you have a bad DOOR UNLOCK relay in the control module.

If the alarm keeps going off constantly and the remote has no influence on the alarm its most likely a connection problem. A hyundai dealer might be able to fix it but since you can start the car something you might be able to try is....
Check and make sure the remote battery is in the right way. Make sure all of the doors are closed, the trunk is closed, open the hood, connect the battery, close the hood all the way and try to lock and unlock the doors. Hope this works but if not, sorry it didn't work.

This alarm system can only be 'disarmed' using the keyless remote programmed for this specific vehicle. Press the "Unlock" button on the keyless remote -- this resets/disarms the alarm system. If you do not have keyless remote for this vehicle, get one and have it programmed at a Hyundai Service Center. Problem solved.

there is a short or a signal from the un-locking switch that is triggering your locks.

you have a switch manually to lock and un-lock your doors, the unlocking circuit is making contact.

you can try playing with your switch to un-short the switch or open it up ang check it.


tnx 4 using fixya,

drcool

use the key on the door unlock and lock at the door or lock and unlock this should help you