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 > Lane Departure Alert System (w/ Steering Control)(for Hv Model): Power Steering Control System (C1A70)
DESCRIPTION If the forward recognition camera receives an internal malfunction signal from the power steering ECU (rack and pinion power steering gear assembly), DTC C1A70 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area C1A70 Power Steering Control System 2 seconds after the p ...

Toyota Avalon (XX50) 2019-2022 Owners Manual