Part 3

INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION - Continued

13. REGISTRATION RELATED TO LEXUS LINK SYSTEM
(a) DESCRIPTION
NOTICE:
If replacement of the ECU is necessary, replace the mayday battery (backup battery) together with the ECU.
HINT:
- Turn the engine switch off and disconnect the vehicle battery before replacing the telephone ECU assembly (together with mayday battery) or when just replacing the mayday battery.
- Historic DTCs may be stored if the vehicle battery is not disconnected during ECU installation/replacement.
- The telephone ECU assembly estimates the remaining power of the mayday battery based on the mayday battery usage time.

(1) LEXUS Link Operation Modes
1 Factory Mode
This is the default mode from the factory. In this mode, a Japanese prompt will play when the engine switch is turned on (IG). After any button is pressed, a voice prompt will play "System not initialized, a call cannot be placed."
2 Demo Mode (Dealer Mode)
A button sequence will initialize the telephone ECU assembly from Factory Mode into Demo Mode. In Demo Mode, pressing the SERVICES button will play the voice prompt "Hello and welcome to LEXUS Link. For LEXUS Link services, contact a LEXUS Link advisor by pressing the SERVICES button again. Pressing the SERVICES button again during this voice prompt will place an enrollment call to the LEXUS Link call center.
HINT:
- See "Telephone ECU assembly Initialization" for the button sequence to switch the ECU from Factory Mode into Demo Mode.
- If the ECU will not switch from Factory Mode to Demo Mode, and there are no prompts played when pushing any buttons, the ECU may have been inadvertently placed into an Engineering Mode. In this case, perform this button sequence to switch the ECU back into Factory Mode. While pressing and holding the VOL- button, press the SERVICES button 5 times within 15 seconds, then release both buttons. The ECU will perform a Factory Mode Start Sequence as described under "Telephone ECU assembly Initialization".

3 Active Mode
The LEXUS Link call center will configure this mode automatically after customer enrollment.
4 De-active Mode
The LEXUS Link call center will configure this mode automatically after enrollment expires. The SERVICES button will operate the same as in Demo Mode. Therefore, the customer can push it twice to contact the LEXUS Link call center for re-enrollment.

(b) TELEPHONE ECU ASSEMBLY INITIALIZATION
HINT:
This procedure is for switching a new telephone ECU assembly from the Factory Mode into Demo Mode.
(1) Turn the engine switch from off to on (IG) (engine does not have to be running).
(2) The telephone ECU assembly will perform the Factory Mode Start Sequence for approximately 30 seconds.
HINT:
- In Factory Mode, for each engine switch cycle off to on (IG), or after checking or clearing DTCs, the ECU will perform a start sequence that includes a Japanese prompt and flashing LEDs (approximately 30 seconds). Then the LEDs will turn off. Do not push any buttons during this start sequence.
- If there is a DTC stored during this Factory Mode Start Sequence, after the start sequence, the red LED will remain on and a Japanese prompt will repeat 5 times. Do not press any buttons during these prompts.
(3) BUTTON SEQUENCE:
While pressing and holding the VOL+ button, press and release the Phone button 5 times within 15 seconds, then release the VOL+ button. When switched to Demo Mode, each LED will flash one time then turn off (approximately 5 seconds).
(4) CONFIRMATION:
Confirm Demo Mode by pressing the SERVICES button and listening for the demo prompt "Hello and welcome to LEXUS Link." (the engine switch must be on (IG) for the SERVICES button to function). Additionally, after each engine switch cycle off to on (IG), the LEDs will each flash one time each. This start sequence takes approximately 5 seconds. If Demo Mode is not confirmed, repeat the initialization procedure.
HINT:
- Before troubleshooting a DTC, attempt to initialize the ECU into Demo Mode with the button sequence. Then access DTCs and troubleshoot the ECU in Demo Mode. If necessary, DTCs can still be accessed in Factory Mode. However, the 30 second Factory Mode Start Sequence (and the Japanese prompt, which will repeat 5 times if a DTC is stored) will occur after each engine switch cycle off to on (IG), and after each DTC check or clear. Do not press any buttons during this start sequence.
- A red LED continuously on in any mode indicates that there is a current DTC stored. Refer to the DTC chart.
- Do not push any buttons during any start sequences (LED flashing or voice prompts).

(c) TELEPHONE ECU ASSEMBLY REGISTRATION/ENROLLMENT
(1) Turn the engine switch on (IG) and wait for the 5 second LED flash start sequence. Press the SERVICES button when the telephone ECU assembly is set normally and confirm that the following demo message is provided.
"Hello and welcome to LEXUS Link.".
If the message is not provided, perform the "TELEPHONE ECU ASSEMBLY INITIALIZATION BUTTON SEQUENCE" again.
(2) As the message states, press the SERVICES button again during the prompt to connect to the LEXUS Link call center.
HINT:
Usually this call will connect within 15 to 30 seconds. However, it may take several minutes depending on cellular service in the area. A progression tone (i.e., beep) will be heard every 5 seconds to indicate that the connection attempt is in progress.
(3) A LEXUS Link call center advisor will answer and instruct the technician on how to register/enroll the new telephone ECU assembly. The ESN, STID and VIN may be required at this time.
HINT:
- If the LEXUS Link call center cannot be reached after several attempts using the SERVICES button, or a cell tower message is heard, such as "Welcome to Verizon Wireless, your phone is not active at this time.", call the LEXUS Link call center by pushing the EMERGENCY button.
- The LED flash start sequence (approximately 5 seconds) after the engine switch is cycled or after checking/clearing DTCs remains present after enrollment. A green LED continuously on after this sequence indicates that the LEXUS Link System is activity enrolled.

(d) MAYDAY BATTERY REGISTRATION
HINT:
- This procedure is required to register a new mayday battery and clear DTC 6-1. This procedure matches the new mayday battery with the new or used ECU.
- A new telephone ECU assembly always requires a new mayday battery (used mayday batteries should not be reused in a new ECU).
- If the new replacement ECU is packaged and already connected to the new mayday battery when it arrives from the factory, and current DTC 6-1 is not stored, do not perform the new mayday battery registration (the battery is already registered to the ECU that it is connected to).
(1) Turn the engine switch from off to on (IG) and wait for the start up sequence of LED flashing to complete. Do not press any buttons during this start up sequence.
(Note that Demo Mode and active enrolled ECUs have an approximately 5 second LED flashing start sequence. Factory Mode has approximately 30 seconds of LED flashing with a Japanese voice prompt. Also note if a current DTC is stored in Factory Mode after this 30 second start sequence, the red LED remains on and another Japanese prompt repeats 5 times.)
(2) BUTTON SEQUENCE:
Press and hold the PTT button while completing the following sequence of button presses.
VOL+, VOL+, VOL-, VOL-, VOL+, VOL+, VOL-, VOL-, VOL+, VOL+, VOL-, VOL-
Release all buttons. This button press sequence should be performed within 15 seconds.
(3) The system will then perform the same start sequence as described above. After this start sequence completes, turn the engine switch off then on (IG). Wait for the start sequence to complete. The new mayday battery is now registered to the telephone ECU assembly and DTC 6-1 should be cleared.
HINT:
The mayday battery registration can be done in any mode (Factory Mode, Demo Mode or active enrolled).

(e) MAYDAY BATTERY CONFIRMATION
(1) After mayday battery replacement and completion of the "MAYDAY BATTERY REGISTRATION BUTTON SEQUENCE", turn the engine switch off and on (IG), and wait for the start sequence described in the "MAYDAY BATTERY REGISTRATION". Then check that current DTC 6-1 is cleared.
NOTICE:
If the "MAYDAY BATTERY REGISTRATION BUTTON SEQUENCE" has not been completed correctly, DTC 6-1 remains stored even if the mayday battery is replaced with a new one. In this case, check to be sure the old battery is removed and the new battery is installed. Then perform the "MAYDAY BATTERY REGISTRATION BUTTON SEQUENCE" again.

14. REGISTRATION RELATED TO SMART WITH PUSH BUTTON START
(a) DESCRIPTION OF CODE REGISTRATION
HINT:
- The engine immobilizer function ID code is the same as the recognition code for the smart access system with push-button start and wireless transmitter. Registering an ID code enables the smart access system with push-button start, wireless door lock control function and engine immobilizer function to be operated.
- Code registration is needed when the certification ECU (smart key ECU assembly), ID code box (immobilizer code ECU), steering lock ECU, ECM or key is replaced with a new one.

This vehicle does not have a key slot. Therefore, touch the logo of the key to the engine switch to register the key, as shown in the illustration.

(b) PART REPLACEMENT AND KEY REGISTRATION PROCEDURES
(1) If a malfunctioning ECU is discovered through troubleshooting of the smart access system with push-button start, use the ECU replacement and key registration procedures in the table below.
HINT:
- The following procedures require the use of the Techstream:
- New key ID registration
- When simply adding a new key (without losing or replacing any existing keys), refer to "Additional key ID registration" under Key Registration Procedures.
- If all of the registered keys are not available, replacement of the ID code box (immobilizer code ECU), certification ECU (smart key ECU assembly) and steering lock ECU is also required.
- A maximum of 7 keys can be registered.

(c) KEY REGISTRATION PROCEDURES
(1) New key ID registration (when replacing certification ECU (smart key ECU assembly) and ID code box (immobilizer code ECU), or certification ECU (smart key ECU assembly), ID code box (immobilizer code ECU) and steering lock ECU):

HINT:
*: Repeat this process for each key which is to be registered to the vehicle. Finish the procedure for each key within 30 seconds. If the procedure for any of the keys has not been finished within the specified time, perform the registration from process 1 again. Make sure that only 1 key is in the cabin during registration. If 2 or more keys are in the cabin simultaneously, the electric waves will interfere with each other, preventing normal registration.
(2) New key ID registration (when replacing certification ECU (smart key ECU assembly)):

HINT:
- *1: Repeat this process for each key registered to the vehicle. Finish the procedure for each key within 30 seconds. If the procedure for any of the keys has not been finished within the specified time, perform the registration from process 1 again. When performing the key confirmation procedure for a key, the security indicator light comes on and remains on until all the keys are confirmed.
- *2: Repeat this process for each key which is to be registered to the vehicle. Finish the procedure for each key within 30 seconds. If the procedure for any of the keys has not been finished within the specified time, perform the registration from process 1 again. Make sure that only 1 key is in the cabin during registration. If 2 or more keys are in the cabin simultaneously, the electric waves will interfere with each other, preventing normal registration.
(3) Additional key ID registration:

HINT:
- *1: Perform this process for one of the keys registered to the vehicle. Finish the procedure within 30 seconds. If the procedure has not been finished within the specified time, perform the registration from process 1 again.
- *2: Repeat this process for each key which is to be registered to the vehicle. Finish the procedure for each key within 30 seconds. If the procedure for any of the keys has not been finished within the specified time, perform the registration from process 1 again. Make sure that only 1 key is in the cabin during registration. If 2 or more keys are in the cabin simultaneously, the electric waves will interfere with each other, preventing normal registration.
(4) Key ID erasure (clear all registered key codes except one):

HINT:
*: Perform this process for one of the keys registered to the vehicle. Finish the procedure within 30 seconds. If the procedure has not been finished within the specified time, perform the registration from process 1 again.
(7) ECU communication ID registration:
SST: 09843-18040
NOTICE:
- The ECU communication ID should be registered when the ID code box (immobilizer code ECU), steering lock ECU or ECM is replaced in order to match the ECU communication ID.
- The engine cannot be started unless ECU communication ID is registered.
- After the registration, pressing the engine switch may not start the engine on the first try. If so, press the engine switch again.
- After the engine is started, clear DTC B2799 (code for ECM immobilizer communication error) using either of the following methods:
- Use the Techstream.
- Disconnect the cable from the negative (-) battery terminal for 30 seconds.

1 Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
2 Turn the engine switch on (IG) (do not start the engine) and leave it as is for 30 minutes.
3 Turn the engine switch off and disconnect terminals 13 (TC) and 4 (CG).
4 Check that the engine starts and stays on for more than 3 seconds.
(8) ECU communication ID reregistration:
NOTICE:
The ECU communication ID should be registered when the ECM is replaced in order to match the ECU communication ID.