What does one do if both sets of car keys are lost?<br><br>EK in St. Paul

"What does one do if both sets of car keys are lost?"<br><br>It can be done, but it is expensive. You need to buy new keys ($80 or so each) and a new Transponder Key ECU (probably VERY expensive). I<br>suspect that there is some way to clear the ECU to its initial state so that it can be programmed for the new keys, but it is a very well kept secret.<br><br> -- Joe Ahlgren

Cry, then spend lots of money on a new engine computer.<br><br> arnold

Is there someone here who's lost their keys -- all of them?

By: kraftrob9 said on 11/15/01 3:43 am:<br><br>&gt;What does one do if both sets of car keys are lost?<br><br>You try to find one of those missing master keys (usually black), and get a duplicate made!<br><br>The keys have a little transponder in them, that syncronizes (sp?) to one of the little computers (ECU) in the Prius. Only a recognized key's signal can start the car. You could have a hardware store make a spare metal key, but without the trained transponder/chip in the key that hardware store key will only get you into the doors, and won't start the car. (This is the engine immobilizer security feature on the car.)<br><br>On the Group site, one dealership received a Prius for delivery without any keys... The dealership had to purchase and install a new ECU ($800+), and get new keys/remotes (in the ~$100 range for a key/remote).<br><br>The same event also occurred to another poster who lost their only master key (dealership didn't provide the 2 master/1 valet key when she purchased the used Prius). The dealership had to install a new ECU and get new keys ordered and made...<br><br>The short of it is - don't loose all of your master keys! It'll easily run you over $1000 (parts, labor, and the like) to get your car in a movable condition again if you loose them all.<br><br>(you (well, your dealer) can only make a spare key if you have at least one master key. ALL keys you have must be present when programming a new spare key...)