Toyota Yaris: Smart Key System (for Start Function) / Precaution

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Smart Key System (for Start Function) / Precaution

PRECAUTION

CAUTION REGARDING INTERFERENCE WITH ELECTRONIC DEVICES

CAUTION:

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 and the following.

People with implantable cardiac pacemakers, cardiac resynchronization therapy-pacemakers or implantable cardioverter defibrillators should keep away from the smart key system antennas. The radio waves may affect the operation of such devices. If necessary, the entry function can be disabled. Ask your dealer for details, such as the frequency of radio waves and timing of the emitted radio waves. Then, consult your doctor to see if you should disable the entry function.
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User of any electrical medical device other than implantable cardiac pacemakers, cardiac resynchronization therapy-pacemakers or implantable cardioverter defibrillators should consult the manufacturer of the device for information about its operation under the influence of radio waves. Radio waves could have unexpected effects on the operation of such medical devices.
Ask your dealer for details for disabling the smart key system.

Exterior antenna	Front door outside handle assembly LH Front door outside handle assembly RH Electrical key antenna (outside luggage compartment)
Interior antenna	No. 1 indoor electrical key antenna assembly (front floor) No. 2 indoor electrical key antenna assembly (rear floor)

HINT:

The smart key system can be disabled by a customize setting.

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PRECAUTION WHEN USING GTS

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

PRECAUTIONS FOR AUXILIARY BATTERY

(a) If the auxiliary battery became discharged and then was charged or the cable was disconnected and reconnected to the (-) auxiliary battery terminal, the steering lock may not be released and the engine may not be able to be started unless the driver door is opened and closed with the ignition switch off.

(b) After the auxiliary battery is removed and reinstalled, be sure to wait at least 10 seconds before the next engine start. The engine may not start immediately after the auxiliary battery is reinstalled.

HINT:

After disconnecting and reconnecting a cable to the auxiliary battery, the engine may not start on the first attempt. If this occurs, turn the ignition switch off. The engine will start normally from the second time onward.
When a cable to the auxiliary battery is disconnected and reconnected, the power source mode returns to the mode it was in before the cable was disconnected.

PRECAUTION FOR REGISTRATION

(a) If replacing any of the following parts, refer to Registration.

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(1) Certification ECU (smart key ECU assembly)

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

(3) ECM

(4) Electrical key transmitter sub-assembly

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

(6) ID code box (immobiliser code ECU)

PRECAUTIONS FOR STEERING LOCK / UNLOCK FUNCTION

(a) After turning the ignition switch off and opening and closing any of the doors, the steering wheel will be locked due to the steering lock function. Operating the engine switch again automatically cancels the steering lock function.

(b) To prevent the steering lock motor from overheating, the motor operation may be suspended if the steering is locked and unlocked repeatedly in a short period of time. In this case, refrain from operating the engine switch. After about 10 seconds, the steering lock motor will resume functioning.

Smart Key System (for Start Function)

Parts Location

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