Lexus RX (RX 350L, RX450h) 2016-2023 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 | .gif) | END |
|
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| 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 CodesOK:
No DTCs are output.
| NG | | GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
| 3. | CHECK DCM OPERATION HISTORY |
(a) Check "DCM Operation History".
Click here .gif)
| 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 |
|
| 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 | | PERFORM DCM ACTIVATION |
Red Indicator Remains On
DESCRIPTION This means that the DCM (telematics transceiver) has detected a malfunction in the safety connect system and stored a DTC or specific vehicle control history (RoB) Code. PROCEDURE 1. ...
Emergency Call Switch Illumination Circuit
WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be need ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Steering Lock System: IG2 Signal Malfunction (B2788)
DESCRIPTION This DTC is stored when the steering lock ECU (steering lock actuator or upper bracket assembly) detects an IG2 power supply malfunction. HINT: The steering lock ECU (steering lock actuator or upper bracket assembly) is not connected to the CAN communication system. However, the steering ...
Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Safety Connect System: Vehicle Control History
VEHICLE CONTROL HISTORY NOTICE: Make sure to record any output Vehicle Control History codes before clearing them and checking the Vehicle Control History again. CHECK VEHICLE CONTROL HISTORY NOTICE: Depending on the parts that are replaced during vehicle inspection or maintenance, performing initia ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
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- Instrument cluster
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
- General
- Audio & Visual & Telematics
- Brake
- Drivetrain
- Engine & Hybrid System
- Power Source & Network
- Steering
- Suspension
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