# Service bulletin Dealer 23Z9

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: 10169518
- Published by NHTSA: 2020\-01\-08
- Manufacturer's number: Dealer 23Z9
- Manufacturer's date: 2019\-12\-17
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Audi is releasing a software calibration update to the Approved Emissions Modification \(AEM\). This software calibration will include the following changes to the vehicles' emissions control and on\-board diagnostics \(OBD\) software: \(1\) It will correct an issue that is causing the 'check engine' light to falsely illuminate under certain driving conditions, which has resulted in replacement of the diesel oxidation catalyst \(DOC\) for certain customers; \(2\) It will reduce the likelihood of experiencing an engine shudder that could occur during certain warm\-up driving conditions; and \(3\) It will improve OBD monitoring of vehicle emissions systems and otherwise improve the software used by your vehicle.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10169518-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10169518-9999.pdf)

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

## Components

Electrical system

## Vehicles listed

- 2013 to 2015 AUDI Q7

## Other bulletins for the same vehicles and component

- [TSB\_2073747\_4](/bulletins/11035810.md), 2026-08-05, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informatoinw hent here are scratches or a coating on the cover of the instrument cluster, or particles inside of the housing.
- [TSB\_2059335\_7](/bulletins/11034643.md), 2026-07-07, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information when there are noises from the area around the instrument cluster.
- [TSB\_2080517\_4](/bulletins/11033492.md), 2026-06-04, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informaiotn when the starter battery is discharged or defective.
- [TSB\_2080517\_3](/bulletins/11032165.md), 2026-05-05, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informaiotn when the starter battery is discharged or defective.
- [TSB\_2081405\_1](/bulletins/11031051.md), 2026-04-07, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informaiotn about various infortainment system complaints.
- [TSB\_2024323\_13](/bulletins/11030985.md), 2026-04-07, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information when the parking assistance gives false warnings.
- [TSB\_2024323\_12](/bulletins/11030984.md), 2026-04-07, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information when the parking assistance gives false warnings.
- [TSB\_2080517\_2](/bulletins/11029407.md), 2026-03-03, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides informaiotn when the starter battery is discharged or defective.
- [TSB\_2059335\_6](/bulletins/11029370.md), 2026-03-03, Service bulletin: ELECTRICAL SYSTEM. This TSB provides information when there are noises from the area around the instrument cluster.
- [TSB\_2080681\_1](/bulletins/11028448.md), 2026-02-06, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides information regarding contact checks for event memories, intermittent.

JSON: [/v1/bulletins/10169518](/v1/bulletins/10169518)

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