hey guys where on the 2001 pajero v6 3000 l u would fine the key sensor for open the door and close it ? my key work sometimes i change the battery is the same thing my key as two buttons one for close and one to unlock it as feature to wine up and down the windows any advice is appreciated

It can be the keypad itself. I had that issue with my Diamante 3 years ago. One of my keypad were acting bad. Sumtimes it would work , and sumtimes i had a hard time to make it work. My other keypads worked fine tho for locking and unlocking , i eventually just replaced the keypad and all is fine.

i change keypad and still having the problem probably if i could locate the sensor on the vehicle i probly could solve the fault.