# Service bulletin 23W1 \- Circular

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: 10127921
- Published by NHTSA: 2018\-02\-05
- Manufacturer's number: 23W1 \- Circular
- Manufacturer's date: 2017\-08\-11
- NHTSA component: EQUIPMENT

## NHTSA's summary

Inlet Air Box Housing Snow Flap Replacement \& Oxygen Sensor Inspection/Replacement \- The snow flap in the inlet air box housing may remain partially to fully open. Should this occur, excess warm air could enter the air intake through the snow flap inlet. The oxygen sensor will be checked during this service and, if measured degradation tolerances are met, the sensor will be replaced.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10127921-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10127921-0001.pdf)

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

## Components

Equipment and accessories

## Vehicles listed

- 2010 to 2011 AUDI A3
- 2013 AUDI A3

## Other bulletins for the same vehicles and component

- [A0024842073507\_1](/bulletins/10252440.md), 2024-04-04, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides instructions on evaluating TDI vehicles for repurchase prior to repairs.
- [A9124632044694\_3](/bulletins/10250322.md), 2024-03-06, Service bulletin: EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM\(GLOBAL POSITIONING SYSTEM\). This bulletin provides information pertaining to MMI Navigation database concerns.
- [4014412018194](/bulletins/10250665.md), 2024-02-26, Service bulletin: EQUIPMENT; STRUCTURE. Shock absorber leaks: assessment aid
- [Guidelines](/bulletins/10250204.md), 2024-02-12, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. AUDI delivery guidelines
- [Edition81](/bulletins/10250106.md), 2024-02-12, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Elsa newsletter
- [A0023812070568\_2](/bulletins/10245285.md), 2023-12-06, Service bulletin: EQUIPMENT. This bulletin provides information on the VAS 611 015 PICO\-NVH tool for professional noise analysis.
- [A7423262071893\_1](/bulletins/10244517.md), 2023-11-06, Service bulletin: EQUIPMENT:OTHER:LABELS. This bulletin provides damage assessment guidelines for textile seat covers.
- [A0023762071721\_1](/bulletins/10244320.md), 2023-11-06, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM. This bulletin provides information for when unauthorized/unjustified DTC memory entries are captured in ODIS test Plans \(Ghost faults\).
- [A0023742052680\_4](/bulletins/10243930.md), 2023-11-06, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information on the additional reporting requirements for safety related inquiries.
- [Edition37](/bulletins/10243995.md), 2023-10-16, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Elsaweb Newsletter

JSON: [/v1/bulletins/10127921](/v1/bulletins/10127921)

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