"The same works for locking all 3 doors except the drivers door. Basically, for the keyless remote to work on the other 3 doors, I have to have to use the key to unlock the drivers door and have the "stick lock/unlock" up."

Yeah I still have difficulty understanding this part.

I have no doubt you know how the remote works and I wasn't trying to offend you. I was just trying to lay out the scenarios so I could understand your problem better. But maybe I'm just not feeling smart today.

 

No worries, Im j ust glad you are trying to help me here. I know it kinda doesn't make sense, but I'm describing it as I see it.

If you imagine doing this step by step.

First, use your key to unlock the door. Don't open the door. Then and after then does the remote works to unlock the other doors

If I try to use to remote to unlock the drivers door. The "lock/unlock stick" won't jump up or down.

 

I have a 05 Honda Accord that is doing the exact same thing as yours. Did you ever get it fixed and if some what did you do?

 

My '05 Honda remote is acting up also. Light works when I press unlock/lock but doesn't always unlock/lock doors only sometimes....

 

1. Have you tried a new remote transmitter battery or different transmitter? Even though the transmitter LED lights up, does not necessarily mean the battery voltage output is enough.

2. Is your car a coupe or sedan?

3. If not the transmitter battery, the following can cause locking and unlocking issues:

• If the driver's side door lock actuator is bad, it can cause issue with locking the passenger door, etc. Try manually locking the driver's door and then using the keyless entry to unlock the doors.
• Driver's door multiplex control unit (MCU), built into the driver's door master switch. The antenna receiver is part of the master switch.
• Under-dash MICU (Multiplex Integrated Control Unit), which is part of the driver's under-dash fuse/relay box. The MICU controls the lock and unlock functions.

4. Check the battery terminals for corrosion, etc.

Get the car battery checked, many parts stores will check the battery for free. Even service places sometimes have offers or coupons for free battery checks.

A weak car battery can cause issues with the multiplex control system.