My fob suddenly stopped opening and closing the doors but it still starts the car. I've checked the battery and that's fine; still lights up etc. It's not a smart key so no switch under the steering wheel. When I use the metal key, it locks all four doors at once so I assume the door locking mechanism is OK. I know about the chicken dance but no second key so can't do that. The main car battery is fine and not low. What else can I look at? Thanks Bob
You should change the battery in the FOB. Starting the car in the keyslot does not use the fob battery, so that's why your car starts.
Maybe there could be some problem in drivers power door lock? Using the mechanical key will just mechanically lock the drivers door. Do all the doors lock and unlock from lock switch inside? If that’s not the problem then maybe there’s a problem with the key. Or car has just somehow lost the programming memory from the key. You should get the second key anyways as it’s hard/expensive to get Prius working if you lose all the keys.
i suppose something inside the fob could be damaged. i've even heard cleaning the circuit board can help, but idk.
I finally sorted it . . . . . Bought the mini vci cable from fleabay. Loaded the techstream software from the disk on to an older laptop with windows xp (32 bit). I tried all the methods online for loading it on to a windows 7, 64 bit but couldn't get it to work. It was very easy on the xp, 32 bit. Then followed the video on youtube (wouldn't have had a clue without that) and managed to program my key and another used key off another car (same make and model) so I now have two fully working keys. The only slight anomaly is that it tells you to press the lock and unlock buttons simultaneously for one second but that doesn't work. You have to do it for three seconds. It took me a while to suss that out. All in all, I've saved hundreds of pounds so very happy. Hope this helps others . . . . . .
