I have this problem with my 94 S320

Remote control only locks the front driver side door, same thing when I do it with the key, then when I open it and try to start the car the alaram enables, cant start the car.

Only solution is to disconnect the battery for two minutes or so.

When I'm inside and I lock the car with the buttom on the door and then unlock it there is no problem. Seems like there is a problem with the pump under the rear seats. it works but doesnt give signal to the front right side door and rear doors. Please help, any suggestions. I did check all the fuses, they seem OK.