Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual: Unable To Connect To Call Center

DESCRIPTION

This may occur when the intensity of telephone radio frequency was very weak, or the safety connect system has a malfunction and a DTC is set.

PROCEDURE

1.

CHECK COMMUNICATION SERVICE CONDITION

(a) Move the vehicle.

(1) If the vehicle is outside the communication service area, move the vehicle to a communication service area, wait for a while and perform the operation again.

OK:

Same problem does not occur.

OK

END

NG

2.

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

3.

CHECK DCM OPERATION HISTORY

(a) Check "DCM Operation History".

Click here

Result

Proceed to

Electric Level is weak (Level 0 or Level 1)

A

No problems with signal strength or communication

B

HINT:

If there was a communication problem in the past but the communications are working correctly now, it is possible that the source of the problem was temporary radio interference, or the vehicle may have been outside the service area.

B

CONTACT SERVICE CENTER

A

4.

REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

Click here

NOTICE:

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

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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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