# Service bulletin T\-TT\-0591\-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.

- Type: Service bulletin
- NHTSA id: 10171593
- Published by NHTSA: 2020\-02\-24
- Manufacturer's number: T\-TT\-0591\-20
- Manufacturer's date: 2020\-01\-06
- NHTSA component: PARKING BRAKE; POWER TRAIN; SEAT BELTS

## NHTSA's summary

TT: A message to replace the battery may indicate on the dash. This message can display when the voltage drops too low and is to assure the customer receives the vehicle with a fully charged battery. Due to the high amp draw when the vehicle is not shut down, this vehicle depletes the battery charge much quicker than other Toyota vehicles, so dealers must use care to maintain battery charge on their lot. Care should be made to use the key fob to lock the vehicle upon every exit of the vehicle. If you are going to remain in the vehicle, press and hold the power button on the radio.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10171593-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10171593-9999.pdf)

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

## Components

Brakes, Seat belts, Transmission and driveline, Parking brake

## Vehicles listed

- 2020 TOYOTA SUPRA

JSON: [/v1/bulletins/10171593](/v1/bulletins/10171593)

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