# Service bulletin Circular37K8REV2

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: 10188612
- Published by NHTSA: 2021\-04\-06
- Manufacturer's number: Circular37K8REV2
- Manufacturer's date: 2021\-03\-09
- NHTSA component: POWER TRAIN

## NHTSA's summary

Transmission control module \(TCM\) software designed and certified for a similar model/model year was used in vehicles affected by this action. It is undetermined whether there could be an impact to emissions. Updated claiming and parts information to add optional part numbers

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10188612-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10188612-9999.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2015 AUDI A3
- 2013 AUDI RS5
- 2013 AUDI S4
- 2013 AUDI S5
- 2013 AUDI S5 CABRIOLET

## Other bulletins for the same vehicles and component

- [TSB\_2028902\_5](/bulletins/11034638.md), 2026-07-07, Service bulletin: POWER TRAIN. This bulletin provides informaiton when the transmission warning message appears in the cluster; P074100 stored in the TCM.
- [TSB\_2074808\_4](/bulletins/11033475.md), 2026-06-04, Service bulletin: POWER TRAIN. The high\-voltage batteries in electric vehicles are subject to various ageing effects which could lead to the energy content \(energy density\) being reduced. This reduction in the energy content, which is due to factors. Revised header. Added Model years
- [TSB\_2074808\_3](/bulletins/11027358.md), 2026-01-07, Service bulletin: POWER TRAIN. This bulletin provides additoinal information to assist in determining the energy content of lithium\-ion high\-voltage batteries.
- [TSB\_2028085\_7](/bulletins/11016503.md), 2025-04-04, Service bulletin: POWER TRAIN. This bulletin provides information when there are leaks from the transmission.
- [A3724292076084\_1](/bulletins/11012486.md), 2025-01-07, Service bulletin: POWER TRAIN. This TSB provides information when event memory entries cannot be deleted \(Mode$0A error\) on gearboxes: DL501, DL382/DL382E and DQ500.
- [A0124442075010\_2](/bulletins/11011241.md), 2024-12-04, Service bulletin: POWER TRAIN. This bulletin provides information when the engine warning lamp lights up in the instrument cluster, and the vehicle has reduced power. DTCs P256300, P056E00, P00AF00.
- [A0124392075010\_1](/bulletins/11009318.md), 2024-10-28, Service bulletin: POWER TRAIN. This bulletin provides information when the engine warning lamp lights up in the instrument cluster, and the vehicle has reduced power. DTCs P256300, P056E00, P00AF00.
- [A3724222074826\_1](/bulletins/11007305.md), 2024-09-06, Service bulletin: POWER TRAIN. This bulletin offers information about the basic information needed for technical requests for gaerbox complaints.
- [A3724222074826\_1](/bulletins/11007224.md), 2024-09-06, Service bulletin: POWER TRAIN. This bulletin offers information about the basic information needed for technical requests for gaerbox complaints.
- [A4824682028220\_11](/bulletins/11005894.md), 2024-08-06, Service bulletin: POWER TRAIN. This bulletin provides information when there is visual damage on the steering wheel.

JSON: [/v1/bulletins/10188612](/v1/bulletins/10188612)

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