# Service bulletin T\-TT\-0741\-23

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: 10245484
- Published by NHTSA: 2023\-11\-27
- Manufacturer's number: T\-TT\-0741\-23
- Manufacturer's date: 2023\-10\-24
- NHTSA component: EQUIPMENT:ELECTRICAL

## NHTSA's summary

TT: Some MY23\-24 Highlander and Grand Highlander/HV vehicles may experience a condition where the engine does not restart automatically following a start/stop event. However, the engine may be restarted normally after a period of time in the IG OFF condition. This condition typically sets DTC P154200. Please contact TAS for diagnostic instructions to aid in resolution of the condition.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10245484-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10245484-9999.pdf)

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

## Components

Equipment and accessories

## Trouble codes named

P1542

## Vehicles listed

- 2024 TOYOTA GRAND HIGHLANDER
- 2023 TOYOTA HIGHLANDER

## Recalls for the same vehicles and component

- [24V548000](/recalls/nhtsa/24V548000.md), 2024-07-23: EQUIPMENT:OTHER:LABELS

## Other bulletins for the same vehicles and component

- [T\-SB\-0015\-24](/bulletins/10253241.md), 2024-04-15, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; EQUIPMENT:ELECTRICAL:INFOTAINMENT. TSB: A head unit software update is now available for 2023 model year Corolla Cross, Corolla Cross Hybrid, Highlander, Highlander Hybrid, and Mirai vehicles equipped with Toyota Multimedia \(earlier than version 2050\). This software update includes the following improvements: ?User interface design. ?Intelligent assistant. ?Navigation lane guidance. ?Phone book search. ?Bug fixes
- [TSB002623](/bulletins/10252256.md), 2024-04-01, Service bulletin: EQUIPMENT. TSB: Long\-term or off\-site storage requires special care to keep vehicles factory fresh and ready for delivery. The following guidelines should be performed to minimize vehicle component/part degradation due to extended vehicle storage conditions. Long\-term storage can affect a vehicle?s systems and components. Any problems that are found should be corrected immediately.
- [TSB002823](/bulletins/10252249.md), 2024-04-01, Service bulletin: EQUIPMENT. TSB: 2024 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat in the correct position. In addition, some models may also utilize retainers for passenger side and rear seat floor mats. During Pre\-Delivery Service \(PDS\), follow the appropriate Installation Procedure to attach the driver side, and if applicable, the passenger side and rear seat floor mats to the vehicle carpet using the floor mat retainers. If installation instructions are included in the floor mat kit, place the instructions in the vehicle?s glove box for customer reference.
- [TSB002423](/bulletins/10252247.md), 2024-04-01, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT:OTHER:LABELS. TSB: A battery in a stored vehicle is subject to conditions that can reduce its performance and service life. These conditions include storage period, temperature, parasitic drain, and battery load. Because of these factors, battery inspection and maintenance are required in order to ensure proper operation and optimal battery life. 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 State\-Of\-Charge \(SOC\) of the vehicle?s battery while in stock and ensure proper SOC at delivery. To eliminate customer service concerns due to an undercharged battery during the first few weeks of ownership, All dealers should test the auxiliary \(12V\) battery and recharge, if necessary, no more than 48 hours before delivery to the customer.
- [TSB002823](/bulletins/10244124.md), 2023-10-16, Service bulletin: EQUIPMENT. TSB: 2024 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat in the correct position. In addition, some models may also utilize retainers for passenger side and rear seat floor mats. During Pre\-Delivery Service \(PDS\), follow the appropriate Installation Procedure to attach the driver side, and if applicable, the passenger side and rear seat floor mats to the vehicle carpet using the floor mat retainers. If installation instructions are included in the floor mat kit, place the instructions in the vehicle?s glove box for customer reference.
- [TSB002623](/bulletins/10244123.md), 2023-10-16, Service bulletin: EQUIPMENT. TSB: Long\-term or off\-site storage requires special care to keep vehicles factory fresh and ready for delivery. The following guidelines should be performed to minimize vehicle component/part degradation due to extended vehicle storage conditions. Long\-term storage can affect a vehicle?s systems and components. Any problems that are found should be corrected immediately.
- [TSB002423](/bulletins/10244122.md), 2023-10-16, Service bulletin: EQUIPMENT. TSB: A battery in a stored vehicle is subject to conditions that can reduce its performance and service life. These conditions include storage period, temperature, parasitic drain, and battery load. Because of these factors, battery inspection and maintenance are required in order to ensure proper operation and optimal battery life. 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 State\-Of\-Charge \(SOC\) of the vehicle?s battery while in stock and ensure proper SOC at delivery. To eliminate customer service concerns due to an undercharged battery during the first few weeks of ownership, All dealers should test the auxiliary \(12V\) battery and recharge, if necessary, no more than 48 hours before delivery to the customer.
- [LSB001923](/bulletins/10244118.md), 2023-10-16, Service bulletin: EQUIPMENT. TSB: Long\-term or off\-site storage requires special care to keep vehicles factory fresh and ready for delivery. The following guidelines should be performed to minimize vehicle component/part degradation due to extended vehicle storage conditions. Long\-term storage can affect a vehicle?s systems and components. Any problems that are found should be corrected immediately.
- [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.
- [TSB\-0036\-23](/bulletins/10240065.md), 2023-07-31, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE; EQUIPMENT. TSB: Pre\-Delivery Service \(PDS\) is a critical step in satisfying our new car customers. Customer feedback indicates the following areas deserve special attention when performing PDS: ?Careful inspection for paint chips/scratches and body dents/dings. ?Proper operation of electrical accessories \(including interior light, clock, and radio reset\). ?Interior cleanliness. ?Proper function of mechanical systems. Customer retention and proper maintenance of vehicles are and have always been a major focus for Toyota. To help remind customers that regular service is essential to the proper maintenance of the vehicle, dealers are required to install a service reminder sticker before delivery. By doing this, customers will be reminded to return to your dealership for service. Your current service reminder sticker may be used. \(See PDS Check Sheet item 8 of ?Final Inspection and Cleaning.?\) This bulletin contains the PDS procedures that apply specifically to 2024 model year Grand Highlander and Grand Highlander Hybrid vehicles. A universal PDS Check Sheet that contains PDS steps that apply to all 2024 model year Toyota vehicles has been developed. To properly perform a complete PDS, you must complete all procedures contained in this TSB as well as the universal PDS Check Sheet. In addition, if the vehicle is stored for over 30 days, be sure to follow Long\-Term Vehicle Storage Guidelines.

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