remote control battery life??

By remote controller, I assume you mean the key FOB. I don't recall reading anything in the owner's manual saying I can't keep my controller next to my cell phone. I do it all the time; i.e. keep in the same pocket I keep my cell phone. So far no problems, but then I've only had my Prius since May. I'm sure both devices have enough shielding to prevent electronic backwash.

Happy Motoring,

Tom

 

When the phone is off, it won't produce an electromagnetic field, so the key won't be activated inadvertently thinking it's near the car.

That said, it's probably not a big problem anyway - cell phones, even when on, spend almost all of their time essentially off - otherwise, your cell phone's battery would last for only a couple hours, if that.

In general, I'd recommend keeping the key fob away from anything electronic for very long periods of time; so don't drop your purse on top of the TV every night, for example. But if your phone and the fob share a purse for a couple hours a day, that's probably not a big deal, even if the phone is on.

Of course, the worst thing that happens anyway is that you have to replace the battery - so go ahead and sandwich the remote between a computer, a TV, a fluorescent lamp, and your cell phone every single night. If you have to replace the battery sooner than you'd like, well, then you know that you should probably avoid some of those things next time. The warning is primarily for people who have very short battery life in their fob; this gives them some things to try and increase the battery life.