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Service bulletin 27 13 18 2023282

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10212667
Published by NHTSA2022-05-31
Manufacturer's number27 13 18 2023282
Manufacturer's date2013-10-04
NHTSA componentELECTRICAL SYSTEM:12V/24V/48V BATTERY

NHTSA's summary

Battery testing and charging - vehicles with BDM

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, 12-volt battery

Vehicles listed
AUDI A42009, 2010, 2011, 2012, 2013, 2014
AUDI A52010, 2011, 2012, 2013, 2014
AUDI A52018
AUDI A62009, 2010, 2011, 2012, 2013, 2014
AUDI Q52009, 2010, 2011, 2012, 2013, 2014
AUDI Q72009, 2010, 2011, 2012, 2013, 2014
AUDI S52008, 2009, 2010, 2011, 2012, 2013, 2014

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
A2723612067906_42023-11-06. Service bulletin. This bulletin provides information for when DTC P0A7D00 is stored.
371397202898592022-11-21. Service bulletin. Transmission warning message in cluster, P074100 stored in TCM
371396202930592022-11-21. Service bulletin. Harsh downshifts when braking or harsh 1-2 upshift under acceleration
27 14 24 20253602022-05-31. Service bulletin. Low battery charge: Diagnosis tips and TAC instructions
27 13 19 20290102022-05-31. Service bulletin. Low battery charge: excess current draw location
26 13 18 20279452022-05-31. Service bulletin. Humming or metallic rattling noise from under the vehicle, heard most consistently during engine idle or slow acceleration. Initial inspection indicates that the noise is coming from the exhaust system. Relative movements in the rear mounting of the exhaust system (rear silencer).
26 13 16 20338842022-05-31. Service bulletin. If the battery management system detects an issue with the A1 auxiliary battery, EV Mode is disabled. When the ?EV Mode? button is pressed, the message ?EV mode is currently unavailable? (Figure 1) appears in the DIS, and EV mode does not activate.
37 13 09 20287152022-05-02. Service bulletin. After a mechatronics, torque converter, or complete gearbox replacement, the clutches must be adapted to the new component. This requires a gradual move of the clutch linings toward the optimal operating points in the most diverse load conditions. As a result, sporadic driving power disruptions lasting for less than a second or reduced shift comfort are possible over the first 500 miles. This is normal, and these issues will decrease over time. The issues can also occur if the adaptation values of the gearbox were deleted.
27 14 24 20253602022-05-02. Service bulletin. This TSB provides basic diagnosis steps for discharged batteries, general tips for working with batteries, and system verification steps to ensure that the vehicle is configured correctly. For additional information on known current draw issues, refer to the following TSBs: ? 2014127: 27 Battery dead or low after returning to the vehicle (2007 A6, A8, Q7) ? 2019143: 27 Battery discharged on some vehicles with Advanced Key (2005 - 2008 A6, Q7)
26 13 16 20338842022-05-02. Service bulletin. If the battery management system detects an issue with the A1 auxiliary battery, EV Mode is disabled.