Only unlocks partway if at all.

Google

Rona Electronic Deadbolt Lock Instructions:
Default Master Code:123

Resetting Master PIN:

Remove batteries and put them back. You will hear a long beep and a short beep.
Press and hold the 0 button until you hear 3 long beeps and the LED flashes red for 3 seconds. You are now in program mode.
Within 10 seconds, key in a new master PIN (up to 12 digits) and press the UNLOCK button.
Key in the master PIN again and press the UNLOCK button. The LED will flash green for 1 second and the resetting is complete.

Adding a PIN:
Key in master PIN and press UNLOCK button
Press and hold 0 button until you hear 2 short beeps and the LED flashes for 3 seconds.
Release 0 button and you are in the Add PIN mode
Within 10 seconds, enter a new PIN and press the UNLOCK button. You will hear one beep.
Key in the new PIN again and press the UNLOCK button twice. When the LED stops flashing the PIN has been added.

make model resetting lock

https://www.google.com/search?q=resetting+Master+pin+on+rona+Electronic+Deadbolt+lock

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How do I change the access code (and delete my old code) on my Powerbolt 1000?

The steps below are to change your access code to a new code. This will also remove any previous codes stored in the Powerbolt's memory.

1. Manually put the bolt in the extended (lock) position. Press the PROGRAM button once, enter your new 4 - 8 digit code and then press the LOCK button.
2. Press the PROGRAM button twice, enter the same new code and then press the LOCK button once.
3. Press the PROGRAM button three times, enter the same new code and then press LOCK once.

If your old code still remains in the unit, you will need to perform a hard reset of the unit. To perform a hard reset of the unit, remove all four batteries and leave them out for 1 hour. After the hour has passed, you may re-enter the batteries.


I'd recommend replacing the batteries if you haven't done so yet.
Good luck--and please provide feedback if this helps!

How do I change the access code (and delete my old code) on my Powerbolt 1000?
The steps below are to change your access code to a new code. This will also remove any previous codes stored in the Powerbolt's memory.

1. Manually put the bolt in the extended (lock) position. Press the PROGRAM button once, enter your new 4 - 8 digit code and then press the LOCK button.
2. Press the PROGRAM button twice, enter the same new code and then press the LOCK button once.
3. Press the PROGRAM button three times, enter the same new code and then press LOCK once.

If your old code still remains in the unit, you will need to perform a hard reset of the unit. To perform a hard reset of the unit, remove all four batteries and leave them out for 1 hour. After the hour has passed, you may re-enter the batteries.

United States of America Customer Service Contact Information
Call Us Toll Free: 800-422-4278 (Mon-Fri, 6:00am - 4:30pm PST)

http://www.weiserlock.com/Support/Faq/50160000000HhhZAAS.aspx

Good luck, Elizabeth!

Here is a link to the Frequently asked question page for your lock:

http://www.weiserlock.com/Support/Faq/50160000000HhmZAAS.aspx

I have installed your Powerbolt, but when I push the Lock Button, it unlocks? What should I do?
First remove the cover on the inside of the Powerbolt unit. On the right hand side under the batteries, you will notice that is says "Door Direction Jumper". If the cap is mounted on Prongs 1 & 2, carefully remove it and move it over so that it mounts Prongs 2 & 3. A is right handed, B is left handed.

Here's a link which tells you how to remove the cover, and reprogram the lock codes:

http://www.weiserlock.com/Support/Faq/50160000000HhhZAAS.aspx

Unlock vehicle. Enter vehicle. Close driver's door. Switch ignition ON and OFF. Remove ignition key. Press and hold unlock button. Press lock button briefly 3 times within 10 seconds keeping unlock button depressed. Release unlock button. Some models: LED flashes slowly for 10 seconds. Some models: Central locking system locks and unlocks rapidly to indicate correct programming. Repeat above procedure if central locking system does not work and LED does not flash or LED flashes continuously.

Insert key into door barrel or ignition lock and turn key, whilst doing this press the unlock/lock button, the led on the dash should flash to indicate this has initialised the key to the car, then remove key and test operation of remote. If this fails then a new remote plus coding to the car by your dealership is needed

Replace fuse 57 (15 amp) then disconnect battery and wait 30 to 45 minutes before reconnecting the battery.

My 2006 BMW 325I had the same problem with the door locks not responding. I checked all related fuses and found #57 (15 amp) was the only related fuse blown. I put in a new fuse and it still would not work. I then disconnected the battery for a while then once I reconnected the battery everything worked fine.

I believe I blew the fuse while repeatedly pushing the unlock button rapidly while walking across the parking lock to the car. I suggest only pushing the unlock button only once or twice.

Hi, it’s pretty difficult to lose a part of the circuit as you describe. So assuming that you have placed new fresh batteries correctly in the key – making sure that the polarity is correct! (easy to get wrong!) the key will need to be synchronised to the cars ignition / management system. You don’t say which model or year your Merc is, but most have a similar way of re – synchronising the Key to the car. It’s pretty easy and you lose nothing by trying it anyway.

Synchronising the locking system
If the vehicle cannot be locked or unlocked, first check the remote control unit batteries (see below). If the battery charge indicator lamp lights up, this means the system needs to be synchronised.
To do this, direct the remote control unit at the car and briefly press the Lock or Unlock button twice. Within approximately 30 seconds, put the key in the ignition lock and turn the key to position 2. The locking system should now be operative.

Battery Check
Press either the Lock or Unlock button and hold for longer than one second. The light on the key lights up briefly if the battery is OK. if it does not light up, replace the batteries immediately. Mercedes will charge a small fortune for these, so try elsewhere, they are pretty common and will cost substantially less.

If re – synchronising the Key fails to solve the problem, check that the Central locking fuse in the cars main fuse box is OK.

Hope this solves the problem – Let me know? Good luck!

Have all keys with you inside the car and repeat again with the second key within 30 seconds...... "Press and hold the 'unlock' button while at the same time pressing the center 'lock' button three times. On the third time, release the 'lock' button at the same time you release the 'unlock' button." If you have a key with three buttons, ensure doors are unlocked. Put key in ignition and turn key over to 2d position where dash lights, etc come on. Pull key out. Press and hold the "unlock" button while at the same time pressing the center "lock" button three times. On the third time, release the "lock" button at the same time you release the "unlock" button

Touch Key metal to lock cylinder metal then unlock