# Service bulletin TT 91 20 01

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: 10171799
- Published by NHTSA: 2020\-03\-05
- Manufacturer's number: TT 91 20 01
- Manufacturer's date: 2020\-02\-14
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.

## NHTSA's summary

Radio Software diag and update tip.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10171799-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10171799-9999.pdf)

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

## Components

Electrical system, Equipment and accessories, Software

## Vehicles listed

- 2016 VOLKSWAGEN EGOLF

## Other bulletins for the same vehicles and component

- [TT 91 24 01](/bulletins/10249136.md), 2024-02-06, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Addressing Cybersecurity or Vehicle Hack concerns
- [V011812201460319](/bulletins/10238301.md), 2023-07-10, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Software Version Management \(SVM\) instruction.
- [VOS1603](/bulletins/10213875.md), 2022-06-13, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM:SOFTWARE. Release Notes Supplement.
- [VOS1602](/bulletins/10213874.md), 2022-06-13, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; UNKNOWN OR OTHER. Mandatory Installation from Web\-Server.
- [VOS1601](/bulletins/10213873.md), 2022-06-13, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM:SOFTWARE. Mandatory Installation from Web\-Server.
- [VW8716022040184](/bulletins/10213867.md), 2022-06-13, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT. Climatronic with Heat Pump \- Sporadically Too Low Heating or Cooling Performance.
- [A002155201173212](/bulletins/10204722.md), 2022-01-05, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains general instructions for software updates.
- [V0019042054866\_4](/bulletins/10200454.md), 2021-09-02, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL. SD creator instruction, updated to include model year 2022.
- [V011812201460317](/bulletins/10198233.md), 2021-07-02, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Software Version Management \(SVM\)
- [V0019042054866\_2](/bulletins/10184285.md), 2021-01-08, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Instruction on how to create S/D cards used to update programming on various control modules.

JSON: [/v1/bulletins/10171799](/v1/bulletins/10171799)

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