Door key will not open door - 2000 Mitsubishi Montero Sport

Opening the door with the key should turn the alarm off. It is the certified way to get into a car if the key fob remote fails. Get a local auto locksmith to get you a new fob and key and program it. Keep the old one as a spare key.

Check your owners manual for your remote locking features.

It may be quite normal for a key fob to only open the drivers door...opening all the doors when you only need the drivers door open may present a security threat..anyone could enter your vehicle before you had a chance to secure the open doors. You should be able to unlock the doors you need open from the drivers door console.

Hi. you will need to replace the door handle lock insert.

If the ignition key does not open either door, the previous owner could have replaced the ignition lock.
The dealer may be able to cut you a door key from the VIN number.

This worked for me on 2008 Mk5 Golf, after the rear passenger door would not open fro outside or inside.

Hold the inside door latch open and keep it extended, then with the key fob open and close the door locks (still holding the inside latch open). Keep locking and unlocking the door, then it made a kluck and it released.

Open the door manually with the key!

Many Ford Escapes have power door locks as standard equipment. This system consists of a lock switch, lock actuator and wiring harness. When you depress the lock switch, it sends an electronic signal through the harness to the actuator. The actuator moves an internal piston that either pulls the actuator hook down or pushes it up. The actuator hook connects to the lock rod, which either locks or unlocks the door, depending on which way you push the lock button. While this system won't work with a dead battery, the mechanical lock system remains unaffected by electrical power loss.

Insert the door lock key into the driver's door lock.
Turn the key counterclockwise one quarter turn.
Pull the door handle up until the Escape's door opens. Once the driver door is open, simply open the remaining doors by pulling the interior door handles until the doors open.

if the key does not turn the lock spray it out with wd 40 run key in and out of lock few times.because everyone uses remotes to open their cars the waffers in the door locks get coroded and wont fall in proper place when key is inserted.give it good cleaning and see if it will unlock

Adding key.
Note: You must be having one working master key to perform this function.
1. Start with the key out of the ignition, drivers door is open all others closed and drivers door is unlocked.
2. Perform these steps within 5 seconds.
A. Insert the key into the ignition(Do NOT Turn) Pull key out.
B. Insert the key into the ignition(Do NOT Turn) Pull key out.
3. Perform these steps within 40 seconds.
A. Close then open the drivers door.
B. Close then open the drivers door.
C. Insert the key into the ignition(Do NOT Turn) Pull key out.
4. Perform these steps within 40 seconds.
A. Close then open the drivers door.
B. Close then open the drivers door.
C. Insert the key into ignition and leave it in ignition.
D. Close the drivers door.
E. Turn the ignition to ON (Do NOT Start) then back to OFF.
F. Remove the key from the ignition.
5. Within 3 seconds, the power door locks should lock then unlock automatically indicating successful entry into programming mode.
Return to step 1 if the locks do not cycle at this point.
6. Perform these steps within 40 seconds.
A. Press the lock and unlock buttons on the remtoe simutaneously for 1.5 seconds.
B. Immediately after letting go of the lock and unlock buttons,
Press the lock button by itself and hold for 2 seconds. Within 3 seconds, the door locks should lock and then unlock once indicating successful programming. If the door locks cycle twice, repeat steps A and B in step 6 as the remote was not accepted.
C. Repeat steps A and B in step 6 for each new remote.
7. Open drivers door.

The description isn't clear but I will take a stab at it. It sounds like there are two things going on. First the key won't work, this could be caused by the key being worn out, or the door key cylinder or door latch is broken. Second, When the door is opened and you then start to hear that buzzing sound. You are hearing the (door open) chime.

dont blame the idiot,we all make stupid mistakes without thinking and iam no exception,remove door trim and oil the solonoid with a oil can not a silly sunday mechanic spray and let it soak in as its working but i think its just a bit sticky with wear and dirt ingress hence it locks but doesnt unlock which might need a bit more power,oil the whole lot lock and all