I tried opening my sienna xle 2000 model with the keyless system and it never opened. I used the ignition key and just the driver's door opened - the central lock isnt working. Now i noticed the inner lights are not coming up, the clock doesnt display, the full light doesnt come on at night an electrician said the fuses are ok. I dont know what to do. If the engine is on, the central locks work and when the engine is put off it doesnt work. Can anyone help me out? What could be the cause?