# Service bulletin A191555 2039891\-

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: 10120689
- Published by NHTSA: 2017\-10\-25
- Manufacturer's number: A191555 2039891\-
- Manufacturer's date: 2015\-02\-23
- NHTSA component: ENGINE AND ENGINE COOLING:COOLING SYSTEM

## NHTSA's summary

Heating performance is low. Air bubble noises are heard from coolant and/or heat exchanger area. The check valve in the breather line can come loose. As a result, air may get into the coolant system. Modified parts in production starting with production date 2/5/2015.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10120689-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10120689-0001.pdf)

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

## Components

Engine, Cooling system

## Vehicles listed

- 2015 AUDI A4 ALLROAD
- 2015 AUDI A5 CABRIOLET
- 2015 AUDI A6
- 2015 AUDI A7
- 2015 AUDI A8
- 2015 AUDI ALLROAD
- 2015 AUDI Q5
- 2015 AUDI Q7
- 2015 AUDI S4
- 2015 AUDI S5 CABRIOLET
- 2015 AUDI SQ5

## Recalls for the same vehicles and component

- [18V229000](/recalls/nhtsa/18V229000.md), 2018-04-11: ENGINE AND ENGINE COOLING:COOLING SYSTEM
- [17V002000](/recalls/nhtsa/17V002000.md), 2017-01-03: ENGINE AND ENGINE COOLING:COOLING SYSTEM

## Other bulletins for the same vehicles and component

- [DC\_Closure 19N8](/bulletins/10249238.md), 2024-02-06, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:PUMP. SERV\_ACT \- After\-Run Coolant Pump \- Closure Notice
- [Edition92](/bulletins/10231130.md), 2023-02-06, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM. Idenifying and mixing factory fill engine coolants
- [A192227202530312](/bulletins/10207170.md), 2022-02-04, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT. This bulletin contains instructions for identifying and mixing factory fill coolants.
- [A9020652032113\_4](/bulletins/10179112.md), 2020-09-03, Service bulletin: EQUIPMENT; ENGINE AND ENGINE COOLING:COOLING SYSTEM. This information bulletin contains a background on the outside air temperature reading.
- [Circular \- 19N8](/bulletins/10159409.md), 2019-05-06, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM; ENGINE AND ENGINE COOLING. After\-Run Coolant Pump
- [A871782 2044717\-](/bulletins/10153075.md), 2019-02-19, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. This bulletin provides instructions on correcting a high\-pitched buzzing noise in the cabin when the fan speed is no higher than 2.
- [A191785 2047114\-](/bulletins/10128286.md), 2018-02-05, Service bulletin: ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:COOLING SYSTEM. This bulletin contains repair information for a malfunctioning V50 coolant recirculation pump that prevents the passenger side from heating properly with DTC B10D004 or B11D501.
- [A191789 2046712\-](/bulletins/10127818.md), 2018-02-05, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM. This informational bulletin contains guidelines for figuring out why coolant marks are present around the coolant expansion tank cap.
- [A661443 2038652\-](/bulletins/10124758.md), 2017-12-05, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. Supersedes Technical Service Bulletin Group 66 number 14\-42 dated October 9, 2014. The paint is flaking off of the radiator grille or front license plate holder. The surfaces of these components were too smooth \(due to high\-gloss polishing tools\), which led to weak adhesion of the paint during production. Only components with color index T94 are affected.
- [A661442 2038652\-](/bulletins/10124757.md), 2017-12-05, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. The paint is flaking off of the radiator grille or front license plate holder. The surfaces of these components were too smooth \(due to high\-gloss polishing tools\), which led to weak adhesion of the paint during production. Only components with color index T94 are affected.

JSON: [/v1/bulletins/10120689](/v1/bulletins/10120689)

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