System Description

• For the system to be able to detect the location of the key, the vehicle doors must be locked. The door oscillators transmit key detection signals at prescribed intervals in order to form vehicle exterior detection areas (0.7 to 1.0 m (2.3 to 3.3 ft.)).
• When the key is brought into a detection area, the system automatically checks the key's ID code. When this is completed, the door that has detected the key enters the unlock standby condition in accordance with the prescribed unlock mode. In this condition, if the touch sensor on the outside door handle is touched, all doors unlock.
  SYSTEM FUNCTION REFERENCE
  
  

  Mode	Unlock Standby Door	Door to be Unlocked
  One Door Unlock*	Driver	Driver Door Only
  One Door Unlock*	Front Passenger	All Doors
  One Door Unlock*	Back Door	Back Door Only
  All Door Unlock	Driver	All Doors
  All Door Unlock	Front Passenger	All Doors
  All Door Unlock	Back Door	All Doors
  Driver's Door Unlock	Driver	Driver Door Only
  Driver's Door Unlock	Front Passenger	All Doors
  Driver's Door Unlock	Back Door	All Doors

HINT:

*: This is the default setting. The entry unlock mode can be changed by pressing the LOCK and PANIC switches on the key for approximately 5 seconds. For details, see CUSTOMIZE PARAMETERS  .

Fig 1: Entry Unlock Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

• With all doors locked, if the back door opener switch is pressed with the key in the user's possession, the luggage electrical key oscillator (outer) outputs a key detection signal and the certification ECU checks the ID code. After the check is completed, the certification ECU unlocks* the back door via the main body ECU. At this time, if the user continues to press the back door opener switch, the back door lock latch will be released.

HINT:

*: If entry unlock is set to individual door unlock mode, only the back door will be unlocked. If set to all door unlock mode or driver's door unlock mode (default setting), all doors will be unlocked.

Fig 2: Back Door Entry Unlock Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

Handling precaution for back door entry unlock: Back door entry unlock function may not operate if the key is placed near the center of the rear bumper.

• When the key is located outside the vehicle and all doors are closed, if the user presses the lock switch on the outside door handle or the lock switch on the back door, the certification ECU will actuate all oscillators and start checking for the ID code of a key.
• At this time, if an oscillator outside the vehicle (driver's/front passenger's door electrical key oscillator or luggage electrical key oscillator (outer)) determines that the key ID code is legitimate, the certification ECU determines that the key has been taken outside the vehicle and locks all doors via the main body ECU.
• An entry unlock operation will not be authorized for approximately 3 seconds* after the doors have been locked.

HINT:

*: The setting of this duration can be changed using the customize function. For details, see CUSTOMIZE PARAMETERS  .

Fig 3: Entry Lock Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OFF --> ON (ACC) --> ON (IG)

• If the driver presses the power switch once without depressing the brake pedal, the indoor electrical key oscillator, in accordance with the request signal received from the certification ECU, forms a key detection area inside the vehicle by emitting key detection signals. Accordingly, the key sends an ID code signal to the certification ECU via the door control receiver. The certification ECU checks the ID code of the key and transmits the check results to the transponder key ECU.
• The transponder key ECU transmits the check results to the power source control ECU. If the check results show that the ID code is legitimate, the power source control ECU will turn on the ACC relay and start the ACC power supply. At this time, the power source control ECU illuminates a green indicator light on the power switch in order to inform the driver of the ON (ACC) status.
• After the transition to the ON (ACC) status, if the driver presses the power switch again, the power source control ECU will turn on the IG1 and IG2 relays and start the IG power supply. At this time, the power source control ECU illuminates an amber indicator light on the power switch in order to inform the driver of the ON (IG) status.
  Fig 4: Entry Ignition Diagram

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OFF --> ON (READY)

If the driver presses the power switch once while depressing the brake pedal, the indoor electrical key oscillator, in accordance with the request signal received from the certification ECU, forms a key detection area inside the vehicle by emitting key detection signals. Accordingly, the key sends an ID code signal to the certification ECU via the door control receiver.

The certification ECU checks the ID code of the key and transmits the check results to the transponder key ECU.

The transponder key ECU transmits the check results to the power source control ECU. If the check results reveal that the ID code is legitimate, the power source control ECU will turn on the ACC, IG1 and IG2 relays and start the ACC and IG power supply.

At this time, the power source control ECU illuminates an amber indicator light on the power switch in order to inform the driver of the ON (IG) status.

After the indicator light has illuminated, the power source control ECU transmits a hybrid system start request signal to the hybrid vehicle control ECU. Upon receiving this signal, the hybrid vehicle control ECU verifies the check results of the key ID code provided by the transponder key ECU.

If the check results reveal that the ID code is legitimate, the hybrid vehicle control ECU starts the hybrid system.

At this time, the power source control ECU will turn off the indicator light on the power switch in order to inform the driver of the ON (READY) status.

Fig 5: OFF - ON (Ready) Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

• General

  The smart key system is equipped with a warning function to prevent problems resulting from errors in key usage. The smart key system works without any requirements other than having the key in the user's possession. The user, as a result, may become unaware of the presence or location of the key and make errors (listed below) that could lead to serious problems.

EXAMPLES: 

• The driver is unaware that the key has been taken out of the vehicle by a passenger.
• The driver exits the vehicle with the hybrid system running.
• The driver exits the vehicle with the shift position not on P.

If the above situations occur, the hybrid system may be unable to be started after it has been turned off, the vehicle may be stolen, or other problems may result. Warning function descriptions for several key usage errors are below.

1. Warning against the driver taking the key outside the vehicle with the shift position on P:
   DETECTION CONDITIONS CHART
   
   

   Possible results without warning	Vehicle theft or inability to restart hybrid system
   Detection conditions	If all conditions listed below are met and key ID code check result by room oscillator fails, warning will be issued: Shift position is P Power switch is not OFF Driver side door is opened and closed
   Warning (Key warning light)	Illuminates upon detection and turns OFF if power switch is turned OFF or key ID code check result by indoor electrical key oscillator passes.
   Warning (buzzer (combination meter))	Sounds once upon detection. Sounds again if vehicle driven in this state.
   Warning (wireless door lock buzzer)	Sounds 3 times upon detection and stops if power switch is turned OFF or key ID code check result by indoor electrical key oscillator passes

2. Warning against the driver taking the key outside the vehicle while the shift position is not on P:
   DETECTION CONDITIONS CHART
   
   

   Possible results without warning	Vehicle theft or inability to restart hybrid system
   Detection conditions	If all conditions listed below are met and key ID code check result by indoor electrical key oscillator fails, warning will be issued: Shift position is not P Power switch is ON (ACC), ON (IG) or ON (READY) Driver side door is opened and closed
   Warning (Key warning light)	Illuminates upon detection and turns OFF if power switch is turned OFF or key ID code check result by indoor electrical key oscillator passes Warning message is displayed on multi-display
   Warning (buzzer (combination meter))	Sounds continuously upon detection and stops if power switch is turned OFF, shift position is changed to P, or key ID code check result by indoor electrical key oscillator passes
   Warning (wireless door lock buzzer)	Sounds continuously upon detection and stops if power switch is turned OFF, shift position is changed to P, or key ID code check result by indoor electrical key oscillator passes

3. Warning against a passenger taking the key outside the vehicle:
   DETECTION CONDITIONS CHART
   
   

   Possible results without warning	Inability to restart hybrid system
   Detection conditions	If all conditions listed below are met and key ID code check result by indoor electrical key oscillator fails, warning will be issued: Power switch is not OFF Door other than driver side door is opened and closed
   Warning (Key warning light)	Illuminates upon detection and turns OFF if power switch is turned OFF or key ID code check result by indoor electrical key oscillator passes
   Warning (buzzer (combination meter))	Sounds once upon detection. Sounds again if vehicle is driven in this state.
   Warning (wireless door lock buzzer)	Sounds 3 times upon detection and stops if power switch is turned OFF or key ID code check result by indoor electrical key oscillator passes.

4. Warning against operating the entry lock with the hybrid system operating:
   DETECTION CONDITIONS CHART
   
   

   Possible results without warning	Vehicle theft or inability to restart hybrid system
   Detection conditions	If all conditions listed below are met, key ID code check result by indoor electrical key oscillator fails, and key ID code check by door electrical key oscillator passes, warning will be issued: Shift position is P Power switch is not OFF All doors are closed Lock switch on outside door handle is ON
   Warning (Key warning light)	Illuminates upon detection and turns OFF if power switch is turned OFF or key ID code check result by indoor electrical key oscillator passes
   Warning (buzzer (combination meter))	-
   Warning (wireless door lock buzzer)	Sounds for 2 seconds

5. Warning against operating the door lock while the key remains in the vehicle:
   DETECTION CONDITIONS CHART
   
   

   Possible results without warning	Vehicle theft
   Detection conditions	If all conditions listed below are met and key ID code check result by indoor electrical key oscillator passes, warning will be issued: Power switch is OFF All doors are closed Lock switch on outside door handle is ON
   Warning (Key warning light)	-
   Warning (buzzer (combination meter))	-
   Warning (wireless door lock buzzer)	Sounds for 2 seconds

6. Warning against low battery of the key:
   DETECTION CONDITIONS CHART
   
   

   Possible results without warning	Entry control is suddenly disabled
   Detection conditions	If condition listed below is met, and certification ECU receives code indicating voltage drop of key battery while indoor electrical key oscillator checks key ID code: The power switch has been turned OFF after 20 or more minutes have elapsed after hybrid system has been started.
   Warning (Key warning light)	-
   Warning (buzzer (combination meter))	Sounds once upon detection
   Warning (wireless door lock buzzer)	-

7. Warning against operating the entry ignition outside the detection area of the indoor electrical key oscillator:
   DETECTION CONDITIONS CHART
   
   

   Possible results without warning	User is confused
   Detection conditions	If condition listed below is met and key ID code check result by indoor electrical key oscillator fails, warning will be issued: Power switch is pushed
   Warning (Key warning light)	Illuminates for 5 seconds upon detection
   Warning (buzzer (combination meter))	Sounds once upon detection
   Warning (wireless door lock buzzer)	-

8. Warning against operating the door lock while any of the doors is open:
   DETECTION CONDITIONS CHART
   
   

   Possible results without warning	Vehicle theft
   Detection conditions	If all conditions listed below are met, warning will be issued: Power switch is OFF Any door is open Lock switch on outside door handle is ON
   Warning (Key warning light)	-
   Warning (buzzer (combination meter))	-
   Warning (wireless door lock buzzer)	Sounds for 10 seconds and stops when 10 seconds have passed or if any door is closed

• When the power switch is OFF, and the key's LOCK switch and PANIC switch remain pressed for approximately 5 seconds, the entry unlock mode can be changed between the following: individual door unlock, driver's door unlock, all doors unlock and individual door unlock.
• The wireless door lock buzzer informs the user of the entry unlock mode. Refer to the chart below.
  Fig 6: Entry Unlock Mode Selector Function Chart

  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  NOTE:

  • This function only changes the unlocking modes of the smart key system. It does not affect the wireless door lock control system.
  • When changing modes, be sure to push the LOCK switch and PANIC switch firmly, or the panic alarm may activate.

• When the doors are locked, the door electrical key oscillators emit signals to the outside of the vehicle at default intervals. To avoid depleting the auxiliary battery, the system has a power saving function whereby: 1) after 5 days without a response from the key, the system extends door electrical key oscillator signal intervals; and 2) after 14 days without a response from the key, the system deactivates the smart key system.
• When the doors are locked and the key is located within the vehicle exterior detection area, the key and door electrical key oscillators are maintaining communication and using power. To avoid depleting the key battery and auxiliary battery, if the key is located within the vehicle exterior detection area for longer than 10 minutes, the system deactivates the smart key system.

Refer to the chart below for information on how to reinstate the smart key system.