TELEMATICS: TELEMATICS SYSTEM (for Gasoline Model): PROBLEM SYMPTOMS TABLE; 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
When a symptom indicates that a service is malfunctioning, use the Techstream to check whether the service subscription is active.
Click here

Application Function

Symptom

Suspected Area

Link

Vehicle status cannot be checked using the application.

Proceed to "Remote Service Malfunction"

Vehicle status alerts are not received by the application even if remote notification operation conditions are met.

Proceed to "Remote Service Malfunction"

Vehicle cannot be operated remotely using the application.

Perform remote door lock and unlock registration and check if the problem symptom recurs (w/o Smart Key System)

Perform remote door lock and unlock registration and check if the problem symptom recurs (w/ Smart Key System)*1

Perform remote door lock and unlock registration and check if the problem symptom recurs (w/ Smart Key System)*2

Proceed to "Remote Service Malfunction"

*1: for TMC Made
*2: for TMMMS Made

Remote Engine Start and Stop Function

Symptom

Suspected Area

Link

Engine does not start by remote engine start function.

Proceed to "Remote Engine Starter does not Operate"

Engine does not stop by remote engine stop function.

Proceed to "Remote Engine Starter does not Operate"

Warning Notification Function

Symptom

Suspected Area

Link

The multi-display screen does not show a warning message even though a warning light turns on or the multi-information display indicates a warning.

Proceed to "Warning Notification Function Malfunction"

The multi-display screen shows a warning message even though no warning lights are on and the multi-information display does not indicate a warning.

Proceed to "Warning Notification Function Malfunction"

The multi-display screen shows a warning message different from the warning light or the multi-information display.

Proceed to "Warning Notification Function Malfunction"

Destination Function (for TMC Made)

Symptom

Suspected Area

Link

Cannot contact call center when Call Dest. Assist is selected on Destination Assist Connect screen

Contact Telematics Service Provider to inquire about network status

Proceed to "UNABLE TO CONNECT TO CALL CENTER"

Proceed to "DCM Data Signal Circuit between Radio Receiver and DCM"

Radio and display receiver assembly

DCM (telematics transceiver)

Other caller's voice volume cannot be adjusted using the Destination Assist Connect screen

Radio and display receiver assembly

Communication Based Voice Recognition Function (for TMC Made)

Symptom

Suspected Area

Link

Does not recognize voice commands performed to contact support center

Check if the connected service is available

Check if the normal voice recognition function is operating correctly

Proceed to "Does not Recognize Voice Commands Performed to Contact Support Center"

The microphone button on the keyboard input screen does not become enabled

Check if the connected service is available

Proceed to "UNABLE TO CONNECT TO CALL CENTER"