Unable To Connect To Call Center [06/2018 - 10/2019]: Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK COMMUNICATION SERVICE CONDITION
- Move the vehicle.
- 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.
Result
Proceed to OK NG - 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.
Result:
OK
END
Result:
NG
See step 2
- Move the vehicle.
- CHECK DTC
- Turn the power switch off.
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG) and wait for 10 seconds.
- Turn the Techstream on.
- Perform "Health Check" and check for current DTCs.
Refer to HEALTH CHECK [06/2018 - 10/2019]
Result
Result Proceed to DTCs are not output A DTCs are output B
Result:
B
GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART [06/2018 - 10/2019]
Result:
A
See step 3
- CHECK DCM OPERATION HISTORY
- Check "DCM Operation History".
Refer to DCM OPERATION HISTORY [06/2018 - 10/2019]
Result
Result Proceed to Signal strength is weak (0 or 1) A Communication indicates "Fail" 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.
Result:
B
END
Result:
A
See step 4
- Check "DCM Operation History".
- REPLACE DCM (TELEMATICS TRANSCEIVER)
- Replace the DCM (Telematics Transceiver).
Refer to REMOVAL [06/2018 - 10/2019]
NOTE:- The power switch must be off.
- Do not swap the DCM (Telematics Transceiver) with one from another vehicle.
Result
Proceed to NEXT
Result:
NEXT
PERFORM DCM ACTIVATION. Refer to DCM ACTIVATION [06/2018 - 10/2019]
- Replace the DCM (Telematics Transceiver).