# Service bulletin TTT074223

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: 10247802
- Published by NHTSA: 2023\-12\-26
- Manufacturer's number: TTT074223
- Manufacturer's date: 2023\-11\-09
- NHTSA component: FUEL SYSTEM, GASOLINE

## NHTSA's summary

TT: Some 2024 Grand Highlander / Grand Highlander Hybrid vehicles may have a concern of difficult to add more than 12 to 15 gallons of fuel from an empty condition. After refueling the gauge reads full.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10247802-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10247802-9999.pdf)

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

## Components

Fuel system

## Vehicles listed

- 2024 TOYOTA GRAND HIGHLANDER
- 2024 TOYOTA GRAND HIGHLANDER HYBRID

## Other bulletins for the same vehicles and component

- [TSB002523](/bulletins/10252255.md), 2024-04-01, Service bulletin: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. TSB: Hybrid vehicles \(HV\) and battery electric vehicles \(BEV\) are equipped with two types of batteries: ?Hybrid vehicle \(HV\) battery. ?Auxiliary \(12V\) battery. If a hybrid or battery electric 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. As a matter of policy, Toyota does not provide battery warranty coverage for discharged and/or failed batteries due to lack of maintenance. It is the dealer?s responsibility to maintain the specified SOC of the vehicle?s battery while in stock and ensure proper SOC at delivery. Perform the following maintenance service for the HV battery and auxiliary battery.

JSON: [/v1/bulletins/10247802](/v1/bulletins/10247802)

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