Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Problem Symptoms Table

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.

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
Vehicle cannot be operated remotely using the application	Proceed to "Remote Service Malfunction"

Remote Engine Start and Stop Function (Using electrical key transmitter sub-assembly)

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"

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Front Power Seat Control System(for Gasoline Model With Memory): Power Seat Position is not Memorized
DESCRIPTION The main body ECU (multiplex network body ECU) receives seat memory switch signals from the outer mirror control ECU assembly LH via CAN communication. If the SET switch is being pressed when one of the M1 or M2 switches is pressed, or if one of the M1 or M2 switches is pressed within 3 ...

Toyota Avalon (XX50) 2019-2022 Owners Manual