Toyota Tacoma (2015-2018) Service Manual: Precaution

PRECAUTION

1. CAUTION REGARDING INTERFERENCE WITH ELECTRONIC DEVICES

PRECAUTIONS WHEN USING TECHSTREAM

(a) When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.

2. PRECAUTION FOR REGISTRATION

(a) If replacing any of the following parts, refer to the registration procedures (See page ).

(1) Certification ECU (smart key ECU assembly)

(2) Steering lock ECU (steering lock actuator or UPR bracket assembly)

(3) Electrical key transmitter sub-assembly

(4) ECM

(5) Main body ECU (multiplex network body ECU)

3. PRECAUTIONS WHEN DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL

4. PRECAUTIONS FOR VEHICLE BATTERY AND TRANSMITTER BATTERY BUILT INTO ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

(a) When the doors are locked, power from the vehicle battery is used to transmit radio waves. The battery may be discharged if the vehicle remains parked for a long time. If the vehicle is not to be used for a long time, disconnect the vehicle battery or cancel the smart key system (for Entry Function).

HINT:

Refer to the following procedures to cancel the smart key system (for entry function) (See page ).

(b) When the doors are locked and an electrical key transmitter sub-assembly is in the detection area of an electrical key antenna, the key battery may be depleted due to periodic communication between the electrical transmitter sub-assembly and the vehicle. If the vehicle is not to be used for a long time, keep the key away from the vehicle (more than 2 m (6.56 ft.)).

5. PRECAUTIONS FOR ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY

HINT:

For an illustration of an electrical key transmitter sub-assembly, refer to Parts Location (See page ).

(a) The electrical key transmitter sub-assembly is a precision instrument. Be sure to observe the following:

(1) Do not subject the electrical key transmitter sub-assembly to strong physical shocks.

(2) Do not keep the electrical key transmitter sub-assembly in a high temperature area for a long time.

(3) Do not use an ultrasonic washing machine to clean the electrical key transmitter sub-assembly.

(4) Do not use the electrical key transmitter sub-assembly near any magnets or magnetized items.

(5) Do not place the electrical key transmitter sub-assembly near magnetic equipment, such as digital audio players, induction cookers, medical devices that generate low-frequency electromagnetic waves, etc.

(6) Do not attach any stickers to the electrical key transmitter sub-assembly.

(7) Do not disassemble the electrical key transmitter sub-assemblies.

(8) The mechanical key should only be used in an emergency, such as when the transmitter battery is depleted.

6. PRECAUTIONS WHEN INSPECTING SMART KEY SYSTEM (for Entry Function)

(a) General precaution for the smart key system (for Entry Function):

(1) Always carry the electrical key transmitter sub-assembly.

(b) The smart key system (for Entry Function) may not operate normally or the key detection area may decrease in the following situations:

(1) The transmitter battery is depleted.

(2) There are TV towers, electric power plants, broadcasting stations, gas stations or other facilities that generate strong radio waves or electrical noise nearby.

(3) Wireless communication devices, such as walkie-talkies, cell phones, cordless telephones, digital audio players, portable game systems, etc., are carried together with the electrical key transmitter sub-assembly.

(4) The electrical key transmitter sub-assembly is covered by or in contact with objects made of metal, such as coins, certain types of cards, etc.

(5) Metallic film is applied to the rear window glass.

(6) A radio wave type keyless entry system or wireless remote is operated nearby.

(7) An electrical key transmitter sub-assembly from another vehicle is nearby.

(8) The electrical key transmitter sub-assembly is placed near equipment that generates high-voltage or electrical noise.

(c) Operating range of the smart key system (for Entry Function):

(1) Due to the body design, there are some areas in which proper system operation is difficult.

(2) Even if the electrical key transmitter sub-assembly is in the vehicle exterior detection area, the electrical key transmitter sub-assembly may not be properly detected if the electrical key transmitter sub-assembly is near a window, a door handle or the center of the bumper.

(3) Even if an electrical key transmitter sub-assembly is in a vehicle interior detection area, the electrical key transmitter sub-assembly may not be properly detected if it is on the instrument panel, in the glove box or on the floor.

(4) Depending on the way the electrical key transmitter sub-assembly is held, the electrical key transmitter sub-assembly may not operate properly.

(d) As weak radio waves are emitted from the electrical key transmitter sub-assembly, if a pacemaker is being used, be sure to read the pacemaker instruction manual.

(e) The smart key system (for Entry Function) will not operate under the following conditions.

(1) The procedures to cancel the smart key system (for Entry Function) are performed.

(2) There is no transmitter battery or the battery is depleted (the LED of the electrical key transmitter sub-assembly does not blink when an electrical key transmitter sub-assembly switch is pressed).

7. PRECAUTIONS FOR ENTRY UNLOCK FUNCTION

(a) When unlocking the doors, make sure to grasp the front door outside handle assembly LH, ensuring contact with the sensor on the inner part of the handle. Pull the handle after confirming that the door has unlocked.

(b) If the front door outside handle assembly LH is grasped with gloved hands, unlocking may be delayed or may not occur.

(c) When attempting to open a door suddenly or immediately after entering a vehicle exterior detection area, the door may not unlock. In this case the system automatically performs the door unlock operation 4 times. However, if the front door outside handle assembly LH is being pulled at this time, the door may not unlock due to mechanical reasons. If the door is not unlocked, return the front door outside handle assembly LH to its original position and pull the handle after confirming that the door has unlocked.

(d) If the electrical key transmitter sub-assembly is brought too close to the front door outside handle assembly LH, it may not be possible to unlock the door with the entry unlock function.

(e) If an electrical key transmitter sub-assembly is within a vehicle exterior detection area, the door can be unlocked even when a person other than the person carrying the electrical key transmitter sub-assembly grasps the front door outside handle assembly LH.

(f) If a door is not opened after a door unlock operation, the doors automatically lock after approximately or 60 seconds.

(g) If an electrical key transmitter sub-assembly is within a vehicle exterior detection area and a large amount of water is applied to the front door outside handle assembly LH, such as by a car wash or heavy rain, the sensor may react and the entry unlock operation may be performed. However, the doors will automatically lock after approximately 60 seconds if a door is not opened.

(h) If the electrical key transmitter sub-assembly is being carried together with an electrical key transmitter sub-assembly from another vehicle with a smart key system (for Entry Function) and the front door outside handle assembly LH is held, the time before the door is unlocked by the entry unlock operation may be more than normal.

8. PRECAUTIONS FOR ENTRY LOCK FUNCTION

(a) When performing an entry lock operation, if the lock sensor on the front door outside handle assembly LH is touched too quickly, the door may not lock.

(b) If the electrical key transmitter sub-assembly is brought near the vehicle interior (window, front door outside handle assembly LH), the entry lock function may not operate. Also, the key reminder warning buzzer may sound and the entry unlock operation may stop functioning. In this case, move the electrical key transmitter sub-assembly away from the vehicle interior (window, front door outside handle assembly LH), perform an entry lock operation, and then perform an entry unlock operation.

(c) If the electrical key transmitter sub-assembly is being carried and a lock operation is performed from the driver door while the driver door is open (the door is ajar), the door ajar warning does not operate.

(d) If the electrical key transmitter sub-assembly is left on the instrument panel, in the glove box or on the floor, the key reminder warning function may not operate and the electrical key transmitter sub-assembly may be locked in the vehicle when a door lock operation is performed. Always carry the electrical key transmitter sub-assembly.

(e) The entry unlock operation cannot be performed for approximately 3 seconds after an operation that locks the doors, such as an entry lock or wireless lock operation, is performed.