# Service bulletin T\-TT\-0631\-20 Rev

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.

- Type: Service bulletin
- NHTSA id: 10202447
- Published by NHTSA: 2021\-10\-25
- Manufacturer's number: T\-TT\-0631\-20 Rev
- Manufacturer's date: 2021\-09\-01
- NHTSA component: EQUIPMENT:ELECTRICAL

## NHTSA's summary

TT: NOTE: This document only applies to certain audio packages for the following vehicles. 2019 C\-HR \(Audio Plus \& Premium Only\) 2020 Prius \(Audio Only\) 2020 Prius Prime \(Audio Plus Only\) Head unit telematics services become inoperative after DCM replacement and activation if the guest has an ACTIVE Verizon Wi\-Fi Pre\-Paid subscription. Head unit services include Wi\-Fi, Destination Assist, Dynamic Navigation, and Dynamic Voice Recognition. Verizon is not able to transfer the Pre\-Paid subscription to the new DCM automatically. As a result, the guest is unable to use their head unit telematics services. At this time if the DCM is replaced and activated before confirming the guests Wi\-Fi subscription status, this may require Verizon?s IT to perform a manual fix on the customer?s account. To simplify the diagnosis and prevent the unnecessary replacement of parts, please refer to the procedure below. NOTE: This Tech Tip does not apply if the guest is currently under their Wi\-Fi Trial.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10202447-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10202447-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Equipment and accessories

## Vehicles listed

- 2019 to 2020 TOYOTA AVALON
- 2019 to 2020 TOYOTA AVALON HYBRID
- 2019 TOYOTA C\-HR
- 2018 to 2019 TOYOTA CAMRY
- 2019 to 2020 TOYOTA CAMRY HYBRID
- 2020 TOYOTA COROLLA
- 2019 TOYOTA COROLLA HATCHBACK
- 2018 to 2020 TOYOTA MIRAI
- 2020 TOYOTA PRIUS
- 2020 TOYOTA PRIUS PRIME
- 2019 TOYOTA RAV4
- 2018 to 2020 TOYOTA SIENNA

## Recalls for the same vehicles and component

- [2019428](/recalls/tc/2019428.md), 2019-08-23: Accessories
- [19V503000](/recalls/nhtsa/19V503000.md), 2019-06-28: EQUIPMENT:OTHER:LABELS
- [19V244000](/recalls/nhtsa/19V244000.md), 2019-03-27: EQUIPMENT:OTHER:LABELS

## Other bulletins for the same vehicles and component

- [TSB010622](/bulletins/10252259.md), 2024-04-01, Service bulletin: EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM\(GLOBAL POSITIONING SYSTEM\); UNKNOWN OR OTHER. TSB: Some 2018 ? 2022 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 expiration date of the dynamic subscription \(stored in the head unit\), must be checked. If the expiration date has not passed, a license key may be generated without the purchase of an Activation Card Number \(ACN\). Updating the map without the use of an ACN is considered an Embedded Navigation Update \(refer to pg. 10\) and performing this update does not extend the subscription to dynamic map services. If the subscription period has expired, or is expiring within the next 90 days, it should be recommended to the customer to purchase an ACN. Utilizing an ACN, will initiate the Dynamic Navigation Update \(refer to pg. 4\). This Dynamic Navigation Update will perform the embedded navigation update and provide dynamic map services for a period of two years from the date that the Dynamic Navigation Update is performed. ACNs are provided in a pamphlet available through the normal parts ordering system. Follow the process in this bulletin to perform the update.
- [TSB009723](/bulletins/10249312.md), 2024-01-29, Service bulletin: VISIBILITY:FIXED PANARAMIC ROOF/SKY LIGHT ASSEMBLY; EQUIPMENT. TSB: Some 2018 ? 2024 model year Camry and Camry Hybrid vehicles may exhibit the weatherstrip on the panoramic roof center glass peeling on the edges of the glass. Follow the Repair Procedure in this bulletin to address this condition.
- [TSB003220](/bulletins/10244113.md), 2023-10-16, Service bulletin: VEHICLE SPEED CONTROL; AIR BAGS; EQUIPMENT. TSB: Replacement certification labels \(the vinyl label installed on the driver door or door post\) and VIN plates \(the metal plate riveted to dashboard\) \(see Figure 1\) for most 1979 ? 2023 model year vehicles may be available provided the requests meet the criteria listed in this Service Bulletin. Follow the Procurement Procedure in this bulletin to request a replacement certification label or VIN plate.
- [T\-SB\-0032\-23](/bulletins/10241382.md), 2023-08-28, Service bulletin: EQUIPMENT. TSB: Some 2019 ? 2022 model year Avalon and Avalon Hybrid and 2018 ? 2023 model year Camry and Camry Hybrid vehicles may exhibit a condition in which the carpet underneath the door scuff plate becomes untucked or a carpet loop is torn. The condition\(s\) can occur on both the front driver and front passenger sides of the vehicles.
- [TSB\-0032\-23](/bulletins/10240052.md), 2023-07-31, Service bulletin: EQUIPMENT. TSB: Some 2019 ? 2022 model year Avalon and Avalon Hybrid and 2018 ? 2023 model year Camry and Camry Hybrid vehicles may exhibit a condition in which the carpet underneath the door scuff plate becomes untucked or a carpet loop is torn. The condition\(s\) can occur on both the front driver and front passenger sides of the vehicles
- [T\-SB\-0057\-18](/bulletins/10238157.md), 2023-06-26, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM. TSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased. Follow the procedures in this bulletin to reset a vehicle Immobilizer or Smart Key system.
- [TSB000923](/bulletins/10235216.md), 2023-05-01, Service bulletin: EQUIPMENT; SERVICE BRAKES, HYDRAULIC. TSB: Some 2014 ? 2020 model year Toyota vehicles may exhibit a hard start and/or MIL ON condition with one or more of the following Diagnostic Trouble Codes \(DTCs\): ?DTC P0171 and/or P0174 \(System Too Lean Bank 1/Bank 2\) ?DTC P0087 Fuel Rail / System Pressure ? Too Low Techstream data list analysis may reveal positive fuel trims including a no pressure condition verified by a manual fuel pressure gauge. Follow the Repair Procedure in this bulletin to address these conditions.
- [T\-SB\-0026\-22 Obs](/bulletins/10230384.md), 2023-01-17, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. OBSOLETE NOTICE December 21, 2022: This bulletin is now obsolete. Please see T\-CP\-22TE09\-A510\-D.
- [T\-TT\-0611\-20 Rev](/bulletins/10230376.md), 2023-01-17, Service bulletin: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. TT: To assist with the early detection and early resolution of audio related concerns, it may be requested as part of the remanufactured head unit return to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be used when requested by audio suppliers, FTS, and/or FPEs.
- [T\-TT\-0678\-21 Rev](/bulletins/10230371.md), 2023-01-17, Service bulletin: EQUIPMENT:ELECTRICAL. TT: Some 19CY LG DCM equipped vehicles may not be able to complete the firmware update due to not having an active account or waived services during the trial. Follow the steps below to enable ?Temp DCM Activation?.

JSON: [/v1/bulletins/10202447](/v1/bulletins/10202447)

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