Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual: Precaution

PRECAUTION

PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL

NOTICE:

When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the terminal is reconnected.

System Name

See Procedure

Lane Control System

Pre-collision System

Intelligent Clearance Sonar System

Parking Assist Monitor System

Panoramic View Monitor System

Lighting System (w/ Automatic Headlight Beam Level Control System)

Power Door Lock Control System

Power Back Door System (w/ Outside Door Control Switch)

WHEN DISCONNECTING BATTERY CABLE

(a) After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

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WHEN AUTOMATIC COLLISION NOTIFICATION HAS ACTIVATED

(a) Perform "ACN CALL END" with the Techstream to terminate ACN (Automatic Collision Notification) with the call center.

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WHEN DISCONNECTING CONNECTORS FROM DCM (TELEMATICS TRANSCEIVER)

(a) The engine switch must be off.

WHEN REPLACING DCM (TELEMATICS TRANSCEIVER)

(a) After installing a new DCM (telematics transceiver), perform "DCM ACTIVATION" with the Techstream. This allows the Telematics service provider to register the new DCM (telematics transceiver) and to delete the old DCM (telematics transceiver) information from their database.

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NOTICE:

Do not replace the DCM (telematics transceiver) with one from another vehicle.

WHEN UNABLE TO CONTACT WITH CALL CENTER BUT NO DTC

(a) This may occur when the cellular signal strength was very weak. Check "DCM OPERATION HISTORY" with the Techstream.

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WHEN DIAGNOSING DCM (TELEMATICS TRANSCEIVER)

(a) While attempting to diagnose the DCM (telematics transceiver), do not use a DCM (telematics transceiver) from another vehicle. Each DCM (telematics transceiver) is registered to a specific VIN and should not be tested in another vehicle.

PRECAUTION FOR DCM (TELEMATICS TRANSCEIVER)

(a) The DCM (telematics transceiver) uses a LTE (Long Term Evolution) type radio wave signal. The radio wave signals and communication lines may occasionally be unstable depending on time or location factors. Therefore, network access errors may occur intermittently because of radio wave signal conditions. To determine if there is a problem, it may be necessary to make a judgment based on the frequency of the phenomenon or by making a comparison with a comparable type of cell phone.

(b) With the exception of replacing the mobilephone battery, the DCM (telematics transceiver) cannot be disassembled (the DCM [telematics transceiver] case must not be opened). Replace parts.

PRECAUTION FOR MOBILEPHONE BATTERY

(a) The mobilephone battery is a Lithium-ion type battery and can be charged from the DCM (telematics transceiver).

(b) When ACN (Automatic Collision Notification) is performed, the mobilephone battery provides power to the DCM (telematics transceiver).

NOTICE:

The mobilephone battery must not be replaced while an ACN call is in progress.

HINT:

When a Manual Emergency Call is made, the mobilephone battery is not used as the power source.

(c) When it is time to replace the mobilephone battery, the manual (SOS) switch red indicator will come on. The DCM (Telematics Transceiver) will also store a DTC or specific vehicle control history (RoB) code.

PRECAUTION FOR REGISTRATION

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

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(1) DCM (telematics transceiver)

(2) Mobilephone battery

    Safety Connect System
    ...

    Parts Location
    PARTS LOCATION ILLUSTRATION *1 DCM (TELEMATICS TRANSCEIVER) - BUB (BACK-UP BATTERY) *2 DLC3 *3 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - DCM FUSE - ECU-IG2 NO. 3 FUSE *4 RADIO REC ...

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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

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