Smart Key System? Is there a way to make a II act like a III?

There have been a few write ups on this.

I believe you can program the single SKS system to unlock "everything" when unlocking the drivers door, unfortunately there are safety disadvantages to this decision.

As far as making a single door SKS system act like the 3 door system? I don't think the Prius II's even have the needed sensor's in the additional doors. So installation or upgrade would be pretty difficult or impossible. Infact, while I have read threads of people wanting to make it happen or complaining about the limitations of the single door SKS, I can't remember reading a thread where anyone claims to have successfully upgraded.

If you find one please share.

 

I believe this is what you want, but it isn't for the faint of heart, and you have to buy some parts.

How to add SKS to the hatch and passenger door on a 1 door SKS Gen III Prius | PriusChat

Or, you can program your driver door handle SKS to unlock all doors by following the procedure in the manual to unlock all doors. IIRC, with the car in accessory mode, hold the lock and unlock buttons down on your fob till you hear a beep and you get a graphic of a car with all doors open on your multifunction display screen.

 

My Gen2 2009 SKS will unlock all doors from the hatch and the front passenger door. If I want to unlock all doors without opening passenger door I use my key fob, two presses and unlocked. The 2009 with SKS has sensors in both front doors and hatch. If yours is not working, maybe you have a stuck fob button.

 

No worries.

Here's a thread with more info on programming the driver's door SKS to unlock all doors:

Anyway to open all doors with smart key? | PriusChat

 

FWIW my 2011 III just has one door SKS.

 

Eroshan, my 2010 Camry has an SKS system like your 2009 gen 2 Prius, with sensors and buttons on the passenger door and rear trunk/hatch. Why Toyota skimped on the Prius SKS system on the Gen 3 is beyond me.

I have reprogrammed our SKS to unlock all doors from the single SKS in the driver's door handle. We then have to either hit the unlock button twice on the fob or touch the door handle on the driver's door first before opening the hatch.

 

As did ours.

 

Wow, I did not know anyone even attempted this.

Honestly? I think Toyota should make 3 door access the minimum across the Prius line, but I suppose they want "differences" to justify cost increases among trim levels.