Service bulletin T-TT-0596-20

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10171411
Published by NHTSA	2020-02-18
Manufacturer's number	T-TT-0596-20
Manufacturer's date	2020-01-29
NHTSA component	STEERING; SUSPENSION; BACK OVER PREVENTION

NHTSA's summary

TT: Creaking noise during turns (or turning steering wheel) coming from front strut area. 1) Vehicles under 5,000 miles 2) Refer to the attached video as an example of the noise

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Driver assistance, Steering, Suspension, Backup camera

Vehicles listed
TOYOTA AVALON	2020
TOYOTA CAMRY	2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
T-SB-0115-22 Rev	2023-04-17. Service bulletin. TSB: Some 2019 ? 2022 model year Avalon, 2018 ? 2023 model year Camry, 2017 ? 2022 model year Highlander, and 2017 ? 2020 model year Sienna vehicles equipped with a 2GR-FKS engine may exhibit a knocking noise from the vacuum pump at idle.
TTT063620	2022-06-21. Service bulletin. TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions
T-TT-0599-20 Rev	2021-04-19. Service bulletin. 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.
T-TT-0636-20 Rev	2021-04-19. Service bulletin. TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions.
T-TT-0599-20 Rev	2021-02-16. Service bulletin. 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.
T-TT-0636-20	2021-02-16. Service bulletin. TT: Some Toyota vehicles installed with Toyota Complete Maintenance Care (TCMC) brake pads may exhibit a groan or squeak noise in various driving conditions.
T-SB-0119-20	2021-01-25. Service bulletin. TSB: Some 2018 ? 2020 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software. The SST is used with applicable vehicles to deliver the update; however, the process for generating license keys differs from previous generations. Before attempting to perform a map update, the head unit?s expiration date must be checked. If the expiration date is still valid, a license key may be generated without the use of an activation card number. Updating the maps without the use of an activation card number is considered an Embedded Navigation Update (refer to pg. 10) and performing this process does not extend the duration of telematic map services. If the head unit?s expiration date is expired, or is expiring within the next 90 days, it should be recommended to the customer to purchase an activation number. Utilizing an activation number will initiate a Dynamic Navigation Update (refer to pg. 4). This Dynamic Navigation Update will perform the Embedded Navigation Update and provide telematic map services for a period of two years from the day that the Dynamic Navigation Update is performed. Activation card numbers are provided in an activation card number pamphlet available through the normal parts ordering system. Follow the process in this bulletin to perform the update.
T-TT-0627-20	2020-11-30. Service bulletin. TT: During recent discharged battery cases on vehicles equipped with LG DCM, there was confusion if a DCM update was available. Technicians are relying on the Techstream Healthcheck to determine if an update is possible.
T-SB-0005-20	2020-02-18. Service bulletin. TSB: Some 2018 ? 2020 model year Camry and Camry Hybrid vehicles may exhibit one or more of the following conditions: ? Diagnostic Trouble Code (DTC) C1AAE is displayed. ? A camera malfunction error message is displayed on the Multi-display Unit and/or hood damage from aftermarket parts is exhibited. These conditions may be caused by an aftermarket forward recognition hood also known as a camera heater. Follow the Repair Procedure in this bulletin to address these conditions.