NHTSA ID Number: 10214347
Manufacturer Communication Number: TTT059920 Rev4
TSB/Document Date: 2022-06-21
Summary
TT: Vehicle control apps might not operate as expected at times due to preconditions (normal operating parameters) not being established, vehicle settings and/or network/cellular coverage concerns
Tech Tip T-TT-0599-20
Subject
March 24, 2022
Market
Toyota Remote Connect - App Operating Tips
Service Category
Section
Audio/Visual/Telematics
Cellular Communication
USA
Applicability
All Applicable Models
APPLICABLE VEHICLES
2021-2022
2022
2021-2022
2020-2022
2020-2022
2022
2020-2022
2021-2022
2020-2022
2020-2022
2022
2021-2022
2023
Mirai
Tundra HV
Venza HV
Tundra
RAV4
RAV4 HV
Camry
Avalon
Highlander
Tacoma
RAV4 Prime
Corolla
bZ4X
2020-2022
2021-2022
2022
2022
2022
2022
2021-2022
2022
2022
2020-2022
2021-2022
2020-2022
C-HR
Sienna HV
Corolla Cross
Corolla HV
Corolla Hatchback
Camry HV
Prius
Avalon HV
Highlander HV
4Runner
Prius Prime
Sequoia
CONDITION
Vehicle control apps might not operate as expected at times due to preconditions (normal operating
parameters) not being established, vehicle settings and/or network/cellular coverage concerns.
RECOMMENDATIONS
Please review and identify the required details for operation before considering a potential need for a
repair and/or diagnostic support. Please also assist customers with the required preconditions when
necessary to ensure a positive ownership experience.
Contents:
1. Remote Engine Starter Preconditions and Tips
2. Remote Door Lock Preconditions and Tips
3. Vehicle ECU Initializations
4. Key FOB Remote Start Operation
5. Resources (as available)
Expires on
Ver. 2.12 01/01/2020 T
09/24/2022
Rev4
© 2020, Toyota Motor Sales, USA
Page 1 of 4
Tech Tip T-TT-0599-20
March 24, 2022
Subject
Market
Toyota
Remote Connect - App Operating Tips
USA
Applicability
RECOMMENDATIONS
1. Remote Engine Starter Preconditions and Tips:
Utilize the following table as a guide to successful operation of the control apps (cell phone)
based remote engine starter system.
1
2
3
4
5
6
7
8
9
10
11
Service Mode on Multi-display is turned “OFF”
All Doors, Trunk, and Hood are closed
Vehicle has been locked electrically
Brake pedal is not being depressed
Vehicle is in the Park position
The start button is not being pushed
Vehicle battery is not in a discharged state
Vehicle security alarm has not been activated
Smart Key is out of range from the vehicle
Sufficient time has passed since the last attempt
Truck tailgate is in the closed position
NOTE: Network/cellular coverage may influence response time from each command. Sending
multiple commands in a short period of time is not recommended. The remote start by key
FOB is only possible (authorized) after the first successful start using the phone app.
2. Remote Door Lock/Unlock Preconditions and Tips:
Utilize the following table as a guide to successful operation of the control apps (cell phone)
based door lock and unlock system.
NOTE: Network/cellular coverage may influence response time from each command. Sending
multiple commands in a short period of time is not recommended. Make sure door locks work
normally by panel switch and FOB, and that the remote door lock operation is not customized to
OFF.
Expires on
Ver. 2.12 01/01/2020 T
09/24/2022
Rev4
© 2020, Toyota Motor Sales, USA
Page 2 of 4
Tech Tip T-TT-0599-20
March 24, 2022
Subject
Market
Toyota Remote Connect - App Operating Tips
USA
Applicability
RECOMMENDATIONS
3. Vehicle ECU Initializations:
Ensure the vehicle settings and initializations for door lock and remote engine starter are
correct as per the repair manual.
A. Make sure that “Communication Remote Engine Starter” in Techstream customized
settings that is designed/intended for an add-on or aftermarket RES kit is set to “Not
Available”.
Customize>Others>Communication Remote Engine Starter > Not Available
EXAMPLE:
B. With the related DTCs cleared, perform the following registrations/initializations:
i. Smart Key Live>ECU Communication ID Registration>Remote Engine Starter
ii. Smart Key Live>ECU Communication ID Registration> I.D. Code Box/Steering Lock
iii. Telematics>Remote Door Lock Setting
NOTES:
If settings are improper, related DTCs may include: B126A, B2779, U0198, and U1117.
Performing these specific “initializations” can be safely done even if not needed.
Make sure the Telematics initialization utility includes the words “door lock” as a general
“initialization” titled utility may be unrelated and not supporting the door lock/unlock app.
Make sure that any customized setting for remote door locks has the feature enabled.
Do NOT use the Telematics “activation” utility for existing DCMs with established
accounts. [This is only for new off-the-shelf DCMs when first installed into vehicles.]
4. Key FOB Remote Start Operation:
Once the remote start from the key FOB is functioning after telematics enrollment and remote
authorization, it should continue to operate even if the customer allows the remote services trial
to lapse and not renew. If the key FOB remote start function no longer works after the trial has
lapsed, check the Telematics Datalist items below.
Remote Operation: Enabled (functioning correctly), Disabled (Contact the BEC)
Remote A/C by Smart Key: Enabled (functioning correctly), Disabled (Contact the BEC)
Remote Engine Starter Registration: Registered (functioning correctly), Not Registered
(See section 3. B. of this document)
Remote Door Lock Function: Registered (functioning correctly), Not Registered (See
section 3. B. of this document)
Communication Pausing State: Cancel Pausing (functioning correctly), Pausing (Perform
the “Cancel Communication Function Pausing” Utility in Techstream or select the “OK”
button on the Service Mode Screen displayed on the Radio Screen.
Expires on
Ver. 2.12 01/01/2020 T
09/24/2022
Rev4
© 2020, Toyota Motor Sales, USA
Page 3 of 4
Tech Tip T-TT-0599-20
March 24, 2022
Subject
Market
Toyota Remote Connect - App Operating Tips
USA
Applicability
RECOMMENDATIONS
5. Resources:
Service Lane: Knowledge Center/Entune Quick Apps Check
Service Lane: Knowledge Center/Entune Remote Connect Guide
TIS/Tech Assistance:
o Connected Services “Direction” PreCall Worksheet
o Connected Services “Analysis” PreCall Worksheet
Repair Manual/Telematics/DCM Replacement/Initializations for wireless door lock and remote engine
starter in the Smart Key registration section.
LINK REFERENCES
This Tech Tip does not contain any link references
Expires on
Ver. 2.12 01/01/2020 T
09/24/2022
Rev4
© 2020, Toyota Motor Sales, USA
Page 4 of 4
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TSB/Document ID: TTT059920 Rev4
Replacement Service Bulletin Number:
MFR Communication Date: 2022-03-24
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT
MFR Component System:
MFR Component Subsystem:
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