# Service bulletin TT911307

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: 10237734
- Published by NHTSA: 2023\-06\-13
- Manufacturer's number: TT911307
- Manufacturer's date: 2013\-07\-19
- NHTSA component: EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI

## NHTSA's summary

When diagnosing a customer concern of poor sound quality, when using the vehicle?s Bluetooth system during phone calls, on vehicles equipped with the Universal Media Interface \(UMI\), start by checking for microphone related fault codes in AW 77.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2013/MC-10237734-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2013/MC-10237734-9999.pdf)

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

## Components

Equipment and accessories

## Vehicles listed

- 2014 VOLKSWAGEN BEETLE
- 2014 VOLKSWAGEN CC
- 2014 VOLKSWAGEN EOS
- 2014 VOLKSWAGEN JETTA
- 2014 VOLKSWAGEN PASSAT
- 2014 VOLKSWAGEN TIGUAN

## Recalls for the same vehicles and component

- [2014068](/recalls/tc/2014068.md), 2014-03-05: Accessories

## Other bulletins for the same vehicles and component

- [VWP1311](/bulletins/10253489.md), 2024-04-22, Service bulletin: UNKNOWN OR OTHER; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Model Year 2014 Prepaid PDI Time Units
- [VWM1401](/bulletins/10253473.md), 2024-04-22, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Volkswagen Care Scheduled Maintenance Interval Time or Mileage Guidelines
- [911408](/bulletins/10253196.md), 2024-04-15, Service bulletin: ELECTRICAL SYSTEM:WIRING:CONNECTORS/PLUGS:ACCESORY POWER OUTLET/JACK/PORT/USB/SAE/CIGARETTE LIGHTER; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; UNKNOWN OR OTHER; ELECTRICAL SYSTEM:SOFTWARE. Stationary Vehicle Displayed While in Motion \(Premium 8 Radio\)
- [911405](/bulletins/10253193.md), 2024-04-15, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Car\-Net? Operating Control Unit \(OCU/J949\) Service Guidelines \& General Information
- [911404](/bulletins/10253192.md), 2024-04-15, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT; UNKNOWN OR OTHER. Infotainment Worksheet \(U.S. Only\)
- [911401](/bulletins/10253189.md), 2024-04-15, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT:BLUETOOTH/WIFI; UNKNOWN OR OTHER. UMI Software Update for Various Bluetooth® Concerns
- [911323](/bulletins/10253188.md), 2024-04-15, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT; UNKNOWN OR OTHER. Infotainment Worksheet \(U.S. Only\)
- [TT971402](/bulletins/10252942.md), 2024-04-08, Service bulletin: EQUIPMENT:ELECTRICAL. Damage to Data Link Connector \(DLC\) from Aftermarket Devices \(Cannot Communicate with Vehicle OBD System\)
- [TT911402](/bulletins/10252915.md), 2024-04-08, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; EQUIPMENT:ELECTRICAL:INFOTAINMENT. MDI Functions with iPhone 5 Variants \(5, 5c, 5s and iPad fourth generation, iPod Nano seventh generation\)
- [TT911401](/bulletins/10252914.md), 2024-04-08, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; EQUIPMENT:ELECTRICAL:INFOTAINMENT. Car Net? Equipped Vehicles False Outbound Calls

JSON: [/v1/bulletins/10237734](/v1/bulletins/10237734)

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