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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.

DISPLAY FUNCTION

Symptom	Suspected Area	See
Screen does not change when Point of Interest is selected on Destination screen	Proceed to "Touch panel switch does not function"	Refer to Touch Panel Switch does not Function
Screen does not change when eDestinations is selected on Point of Interest screen	Proceed to "Touch panel switch does not function"	Refer to Touch Panel Switch does not Function
Screen does not change when Destination Assist is selected on Destination screen	Proceed to "Touch panel switch does not function"	Refer to Touch Panel Switch does not Function

DESTINATION FUNCTION

Symptom	Suspected Area	See
eDestination button unavailable (grayed out)	Subscription status. Perform Vehicle Inquiry on TIS and confirm the subscription status. If the subscription is valid, press the manual (SOS) switch to verify that the system is active. If SOS call works properly, perform a Destination Assist call and verify that POI can be downloaded from the telematics provider. If the above steps are successful, the customer should call the customer service number published on the Lexus customer website.	-
Cannot download information when Download is selected on eDestination screen	Perform Vehicle Inquiry on TIS and confirm subscription status. Using the multi-display screen, select Destination / Point of Interest / eDestinations. Verify "eDestinations" button is available. If unavailable, the button will be grayed out. If available, click the "Download" button. If "No new eDestination POIs available" or "Download Successful" message appears on the multi-display screen, the system is working properly. If "Can't connect to Network" message appears, the customer should call customer service number published on Lexus customer website.	-
	Proceed to "DCM Data Signal Circuit between Navigation ECU and DCM"	Refer to DCM Data Signal Circuit between Navigation ECU and DCM
	Display and navigation module display	Refer to REMOVAL
	Hard disk drive	Refer to REMOVAL
	DCM (Telematics Transceiver)	Refer to REMOVAL
Cannot contact call center when Call Dest. Assist is selected on Destination Assist screen	Contact Telematics Service Provider to inquire about network status	-
	Proceed to "UNABLE TO CONNECT TO CALL CENTER"	Refer to UNABLE TO CONNECT TO CALL CENTER
	Proceed to "DCM Data Signal Circuit between Navigation ECU and DCM"	Refer to DCM Data Signal Circuit between Navigation ECU and DCM
	Display and navigation module display	Refer to REMOVAL
	Hard disk drive	Refer to REMOVAL
	DCM (Telematics Transceiver)	Refer to REMOVAL
Other caller's voice volume cannot be adjusted using the Destination Assist screen.	Display and navigation module display	Refer to REMOVAL

SDARS SYSTEM FUNCTION

Symptom	Suspected Area	See
Screen does not change when XM related function is selected on Information screen	Proceed to "Satellite Radio Broadcast cannot be Received"	Refer to Satellite Radio Broadcast cannot be Received
	Display and navigation module display	Refer to REMOVAL
	Radio receiver assembly	Refer to REMOVAL

LEXUS INSIDER FUNCTION

Symptom	Suspected Area	See
Screen does not change when LEXUS Insider is selected on Information screen	Proceed to "Touch panel switch does not function"	Refer to Touch Panel Switch does not Function
Data cannot be received using LEXUS Insider screen	Check the LEXUS Insider Setting (Opt in/Out status) in the Navigation Set-up menu.	-
	Proceed to "DCM Data Signal Circuit between Navigation ECU and DCM"	Refer to DCM Data Signal Circuit between Navigation ECU and DCM
	Display and navigation module display	Refer to REMOVAL
	Radio receiver assembly	Refer to REMOVAL
	DCM (Telematics Transceiver)	Refer to REMOVAL
Articles cannot be received automatically although New Article Notification function of LEXUS Insider setting has been set to on*	Contact Telematics Service Provider to inquire about network status	-
	Display and navigation module display	Refer to REMOVAL
	Radio receiver assembly	Refer to REMOVAL
	DCM (Telematics Transceiver)	Refer to REMOVAL
Voice guidance does not function. (Voice guidance for the navigation system is normal.)	Display and navigation module display	Refer to REMOVAL
Cannot stop LEXUS Insider articles from playing	Select another mode, such as AM, FM, CD, etc.	-

NOTE:

*: There could be several days delay for receiving LEXUS Insider articles.