2005 Prius - Remote Issue

Discussion in 'Gen 2 Prius Audio and Electronics' started by KitsuneVoss, Jan 10, 2026 at 5:25 PM.

  1. KitsuneVoss

    KitsuneVoss Member

    Joined:
    Nov 13, 2022
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    Location:
    Virginia
    Vehicle:
    2006 Prius
    Model:
    N/A
    Please read everything here. I am not wonderful at testing although I can do reasonable testing. Step by step is always helpful. I am pretty decent with car repairs, having replaced 5 Prius hybrid batteries between different cars, replaced fuel injectors, replaced spark plugs, replaced wires, replaced inverters, replaced inverter coolant pumps, rebuilt the front end of cars after hitting deer, replaced front struts, replaced rear wheel bearings, pulled apart the dash to add a capacitor to the display, and other stuff.

    My roommate bought be a 2005 Prius to replace the 2006 I had before which threw a rod through the engine. I also have a 2009 Prius which I was swiped in the nose, bending the frame. Each can donate parts. One allows me to start with the key fob in the ignition and the other I can keep the key fob around my neck.

    Used car, Virginia has no lemon law and be one hell of a fight but there were a number of minor problems with the car, many which I think I can honestly deal with. I will be asking a number of questions here over the next few days or weeks.Not sure if a good purchase or not but what I have currently. My roommate got an okay deal.

    The one key fob I received with the car had a dead CR2032 battery. Went to Dollar Tree and got a new battery today. It now lights up. It will not however unlock the doors and I need to insert it to start the car. Key fob is an aftermarket one with no information on what type (Black back original or silver back original) and don't know if it is actually even the right type. The car has the "Buttons" on the doors, which leads me to believe it is the remote start type but not 100% sure. I also don't know if the car's receiver is working.

    Note that I have two donation cars that can provide parts for the system and the non remote cars has three keys and the remote car has one key. After market keys are still not that expensive. I have techstream on a laptop as well. My current plan is to strip the one with a dead engine by the end of this month and get it towed away. Was trying to take the engine out of the other one but ran into issues.

    The items I am trying to find out are
    1. With the buttons on the door and cargo area, is it definitely a remote start?
    2. Is there any way to test if the car receiver is working with what I have on hand?
    3. Any way to program any of the old remotes, if a non remote type because I have extras, or if remote type program an aftermarket I pick up?
    4. If I need to replace the remote receivers in the cars, any way to use what I have?