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Service bulletins for the 2013 Toyota Avalon

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.

511 on file from NHTSA, as of 2026-10-19.

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Bulletins, newest first
T-SB-0163-13 Rev2018-04-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TSB: Use the following procedures to check and/or update the software version of Entune/Navigation for Non-HDD Type units.
T-SB-0061-152018-04-23. Service bulletin. EQUIPMENT:ELECTRICAL. TSB: Some 2012 model year vehicles equipped with a Display Audio Navigation System and Entune? (version less than 2.1.0) may exhibit one or more of the following conditions: ? Vehicle orientation slow to update after vehicle startup ? Five Bing? search results are not all displayed on the map ? Voice recognition destination request does not provide feedback ? Voice recognition for POI search displays ?Function not available? message ? ?Car Multimedia? device name cannot be changed
T-SB-0051-152018-04-23. Service bulletin. SEATS. TSB: Some 2012 ? 2014 model year Camry/Camry HV and 2013 ? 2014 model year Avalon/Avalon HV, Limited and XLE grade vehicles may exhibit a condition in which the front seat cover material has become loose at front edge of seat and is hanging below seat assembly. Reinstalling the seat cover does NOT permanently correct this condition. Follow the Repair Procedure in this bulletin to address this condition.
T-TT-0392-162018-04-23. Service bulletin. EQUIPMENT:ELECTRICAL. TT: Some customers may experience Bluetooth connection issues after updating the Android Operating System to 5.x.x (Lollipop) or later.
T-TT-0391-162018-04-23. Service bulletin. EQUIPMENT. TT: When replacing the Hard Disk Drive (HDD) or Navigation Unit (Navi Unit) follow the instructions below.
T-SB-0036-13 Rev2018-04-23. Service bulletin. POWER TRAIN. TSB: This bulletin includes basic procedures for inspecting and adjusting World Standard (WS) Automatic Transmission Fluid (ATF) level at normal vehicle operating temperature. Note: The following adjustment procedures are for U660E/F and U760E/F transmissions.
T-TT-0374-152018-04-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. TT: Since MY 2011, several different update or upgrade USB SSTs have been issued for Toyota audio and navigation systems. Refer to the chart below for a comprehensive list of all current and previously issued USB SSTs and their applicability.
TTT-0268-13 Rev32018-04-23. Service bulletin. ELECTRICAL SYSTEM. TT: Some customers may encounter Bluetooth connectivity concerns such as: ? Difficulty pairing the phone. ? Intermittent Bluetooth failure to connect when first turning on the vehicle. ? Various Bluetooth Audio functions are no longer functioning with the customer?s phone, such as the ability to change the track using the steering wheel controls. These concerns can be caused by changes made on the customer?s phone. Make sure to inquire with the customer if the connectivity concerns occurred after receiving an operating system update on their phone or if they have restored their phone data/settings recently.
T-SB-0051-15 Rev2018-04-23. Service bulletin. SEATS. TSB: Some 2012 ? 2014 model year Camry/Camry HV and 2013 ? 2014 model year Avalon/Avalon HV, Limited and XLE grade vehicles may exhibit a condition in which the front seat cover material has become loose at the front edge of the seat, and is hanging below the seat assembly. Reinstalling the seat cover does NOT permanently correct this condition. Follow the Repair Procedure in this bulletin to address this condition.
T-TT-0385-162018-04-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Tech Tip: This Tech Tip is being provided to bring attention to the new location of the Entune/NAV/Map Update and Upgrade USB Directory. Click on the TIS tab, Diagnostics tab, Telematics tab, and the document is now located under the reference documents sections. This change has occurred to help speed up the updating process of this document.
TTT-0337-15 Rev12018-04-23. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. TT: When updating either the navigation or radio firmware, verify the vehicle applicability BEFORE beginning the update.
T-TT-0365-152018-04-23. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TT: A vehicle may arrive to the dealer with a MIL ?ON? condition and P0A80 stored in the memory. Some cases have been identified with internal modification done to the HV Battery. Modified or altered parts are not covered under warranty.
TTT-0234-13 Rev62018-04-23. Service bulletin. EQUIPMENT:ELECTRICAL. TT: Since MY 2011, several different update or upgrade USB SSTs have been issued for Toyota audio and navigation systems. Refer to the chart below for a comprehensive list of all current and previously issued USB SSTs and their applicability.
TTT-0344-15 Rev12018-04-23. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. TT: iPhone text messages do not appear on multimedia dis[play.
T-TT-0360-152018-04-23. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. TT: Customers may experience connectivity issues when the following conditions are met: The customer's iPhone is operating on iOS9 firmware. The customer's iPhone is connected to the vehicle via Bluetooth. The customer may complain of the following issues: When receiving two incoming calls simultaneously, both calls are ended automatically. iTunes Radio app does not play via Bluetooth audio. Podcast and Audiobook media playback is inoperative via Bluetooth audio.
T-SB-0159-142018-04-23. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; STRUCTURE:BODY:ROOF AND PILLARS. TSB: Some 2013 ? 2014 model year Avalon and Avalon HV vehicles may exhibit a condition where the headliner is sagging or loose along the rear edge of the moon roof opening and there is a noticeable gap between the headliner and sun shade. This is due to the force of the headliner being greater than the strength of the Dual Lock? fasteners/adhesive which causes them to separate, allowing the headliner to sag in this area. Use the following Repair Procedure to address this condition.
T-SB-0157-142018-04-23. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. TSB: Some 2013 ? 2014 model year Avalon and Avalon HV vehicles equipped with a rear window sunshade may exhibit a condition in which the sunshade rises with no switch input in high ambient temperatures. Follow the Repair Procedure in this bulletin to address this condition.
T-TT-0381-162018-04-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Tech Tip: Some customers may experience difficulty programming HomeLink.
TSB-0012-13 Rev22018-04-23. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. TSB: Flash reprogramming allows the ECU software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Techstream ECU flash reprogramming process and outlines use of the Technical Information System (TIS) and the Calibration Update Wizard (CUW). Flash calibration updates can only be applied to the vehicle/ECU combination for which they are intended. ECUs have internal security that will not allow them to be programmed with another ECU?s information.
T-SB-0032-14 Obs2018-04-23. Service bulletin. SUSPENSION:FRONT. TSB: OBSOLETE NOTICE: This bulletin is no longer applicable and is now obsolete.
T-SB-0213-122018-04-23. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Customer retention and proper maintenance of vehicles has been a major focus for Toyota. To help remind customers that regular oil changes are essential to the proper maintenance of their vehicle, dealers are required to begin installing a first oil change reminder sticker prior to delivery. By doing this, customers will be reminded to return to your dealership for their first oil change. Your current oil change reminder sticker may be used. (See PDS Check Sheet item 9 of ?Final Inspection & Cleaning?.)
T-SB-0211-122018-04-23. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. PRE-DELIVERY SERVICE CHECK SHEET
T-SB-0210-122018-04-23. Service bulletin. ELECTRICAL SYSTEM. To minimize battery discharge during transportation and storage, the Short Pin has been removed at the assembly plant and temporarily stored in the engine compartment Relay Block. Reinstall the Short Pin into its original location and confirm all related DTCs are cleared during Pre-Delivery Service (PDS).
T-SB-0144-12 Rev2018-04-23. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. If the hybrid vehicle is put into storage, the state of charge (SOC) of its HV battery and auxiliary battery will gradually decrease. To prevent the auxiliary battery from becoming discharged during storage, proper maintenance is necessary.
T-SB-0020-12 Rev2018-04-23. Service bulletin. TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS. The purpose of this bulletin is to provide a procedure to adjust tire pressure correctly when outside temperature is significantly colder or warmer than shop temperature. Seasonal temperature change can dramatically alter tire pressure, which can cause the tire pressure warning lamp to illuminate.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.