2006 Smart Key Problem

If you press the button on the hatch will it lock?

It sounds like the sensors in the driver and passenger doors aren't working.

 

The long beep when the door button is pressed means that either a fob is inside the car
or that one of the doors is not closed. Since you have accounted for both fobs it is likely the latter. The hatch is the normal offender; it needs to be firmly closed.

I sorta recall that there is a third possible situation that causes the long beep but I am not sure if there is or not.

 

Chrisky,
I think you are jumping to conclusion on #5.
Your fob battery might be at the borderline where you could start engine, and open the hatch, but not
enough to open the doors (considering it is a 2006). If you ever put your fob near the vehicle for a long period of time, the battery could have been drained low.
My 1st bet would be the door sensors like Danny Hamilton suggested. However, it could also be the
low battery of fob, which is an easy try. The battery is a typical one which you can buy from electronic store for a couple dollars. Why don't we try that first? If it is not, you still have a spare battery to put in the glove compartment for the future.... In that case, it must be the sensors inside the doors.

 

I agree. To ensure that the hatch is closed, turn on the switch for the courtesy light in the hatch area. Then close the hatch and ensure that the light is off.

Make sure that you have accounted for all fobs and that none are hiding in the car's interior. If you still have problems, then try changing the fob battery.

 

Hmmm, very odd.

Hatch will unlock doors, but not lock.

Driver and passenger doorswill neither lock nor unlock.

Car starts without fob in slot.

Hopefully someone else has something to offer, because I'm at a loss.

 

My guess is you're getting out of the car and not powering it down, or it's the fob battery.

 

looking at the manual.....
outside alarm one beep (2 second) locking doors with car on
outside alarm one beep (2 second) locking doors with car off but key out of range
(the first one turns on the interior key light on the dash , the second one does not)
outside alarm one beep (10 seconds) lock switched pressed but door was open
(no interior key light)


this pretty much rules out the low battery warning. according to this manual, when you have a low battery THERE IS NO outside beep, and only an inside beep

when the car beeps again look at the dashboard and see if the key warning light is lit

 

the low fob battery does not make an outside beep, its an inside beep!

yeah im at a loss

according to the smart key chart you are out of range

how about testing the range of the smart key by using the wireless lock and unlock buttons while you are away from the car
that way you can rule out a smart key antenna...??? or the battery?? hmmm

radio shack will test the battery for you


anything over 2volts is supposed to be good?

 

I had a similar problem a couple of years ago. Here is the thread on the solution that worked for me...

Hope this helps!

http://priuschat.com/forums/care-maintenance-troubleshooting/23767-yet-another-smart-key-question.html

 

A few questions and comments...

1. How long have you owned the car?
2. Has the Smart Key function worked properly in the past; or has it never worked during your period of ownership?
3. Are you sure that all fobs are accounted for, and that none are in the vehicle when you are trying to lock up?

Basically, when the tech works on your car, s/he will see whether a DTC was logged by the smart key ECU or the body ECU. If not, the repair manual lists a pretty long troubleshooting process to go through.

BTW, the fob battery is supposed to measure at least 2.5V when no load is applied. However, since you've installed a new battery, that hopefully will rule out the fob battery as the problem.

My guess is that the smart key ECU is the problem. If the problem was limited to one door, then I would guess that the receiver/transmitter associated with that door was the problem.

 

DTC = diagnostic trouble code
ECU = electronic control unit

I'm wondering whether it is possible that the car might contain a third fob hiding somewhere in the vehicle, unknown to you?

 

this is getting trickier and trickier...

with smart function turned off the prius allows you to lock the keys in your trunk

with smart function turned on, and the keys are left in the trunk. the trunk will unlock
if you walk up to it..

i wonder if this is a programming error 'dealer customizable features', a toyota fob with a black emblem (vs the silver one) being used... or perhaps there is a keyfob
somewhere in the trunk that is allowing anybody to walk up to the car to unlock the trunk???

confirmed..

smart system turned on
opened trunk
put spare in trunk
closed trunk
pressed black buttons with other key in hand/pocket long beep
pressed lock button on master key
car locked up tight

walked into the house with master key and left it on kitchen counter
walked back to car, and the trunk opened, because the key was left inside.

the smart back door is part of the dealer customizable features...

 

does your key have a black or a silver toyota logo?

now that the stupid question has been asked, maybe you should carefully remove
everything from the trunk to make sure there are no keys left behind...
to the left there is a storage compartment, in the center is another storage compartment, and the right panel covers the battery, and underneath the center
compartment is the spare tire... i wonder if theres a key there...

try locking the car with your key, take that key far out of range, i mean really far out of range.. walk up to the hatchback with no keys in at all and see if it opens.. if it opens.. thers a spare there somewhere..

 

if the spare key is locked in the car and its not near the trunk like the drivers seat.. it will not unlock unless you have a spare key on you.

when you press the lock button on the remote, your basically giving permission to the prius to lock the car regardless if there is a spare inside

when you press the black tab the car will not lock the car if theres a spare inside

but all these posts dont explain why the car won't unlock the doors if u touch the handle
and when smart system is turned off, the smart door feature that opens that rear door is turned off...