Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Green Indicator Remains Off

DESCRIPTION

After engine switch on (IG), the DCM (telematics transceiver) will enter into self check mode. The manual (SOS) switch red indicator will illuminate for 2 seconds and turn off followed by the manual (SOS) switch green indicator illuminating and remaining on under normal operation. If neither the red nor green indicators remain on, verification of the subscription should be performed.

PROCEDURE

1.

CONFIRM GREEN INDICATOR COMES ON

(a) After the engine switch is turned on (IG) and the manual (SOS) switch red indicator has come on for 2 seconds, confirm that the manual (SOS) switch green indicator comes on for 2 seconds.

OK:

Green indicator comes on.

NG

GO TO STEP 6

OK

2.

CONFIRM SUBSCRIPTION MODE

(a) Confirm the indicator status 5 seconds after the engine switch is turned on (IG).

Result

Proceed to

Green indicator remains on

A

Green indicator remains off

B

A

USE SIMULATION METHOD TO CHECK

B

3.

INPUT VIN WITH TECHSTREAM

(a) Turn the engine switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the engine switch on (IG) and wait for 10 seconds.

(d) Turn the Techstream on.

(e) Choose "Telematics" from the System Selection Menu, and then click "Utility".

(f) Click "VIN Synchronization" on the Utility Selection Menu.

Click here

NEXT

4.

CONFIRM SUBSCRIPTION MODE

(a) Confirm the indicator status at 5 seconds after the engine switch is turned on (IG).

Result

Proceed to

Green indicator remains on

A

Green indicator remains off

B

A

END

B

5.

REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver).

Click here

NOTICE:

  • The engine switch must be off.
  • Do not exchange the DCM (telematics transceiver) with one from another vehicle.
NEXT

PERFORM DCM ACTIVATION

6.

CHECK DTC

(a) Turn the engine switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the engine switch on (IG) and wait for 10 seconds or more.

(d) Turn the Techstream on.

(e) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

(f) Check for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

NG

GO TO DIAGNOSTIC TROUBLE CODE CHART

OK

7.

REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver).

Click here

NOTICE:

  • The engine switch must be off.
  • Do not exchange the DCM (telematics transceiver) with one from another vehicle.
NEXT

PERFORM DCM ACTIVATION

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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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