# Service bulletin A401337 2035854\-

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: 10121406
- Published by NHTSA: 2017\-10\-31
- Manufacturer's number: A401337 2035854\-
- Manufacturer's date: 2013\-12\-03
- NHTSA component: SERVICE BRAKES, HYDRAULIC; SUSPENSION

## NHTSA's summary

The customer reports hearing a rattling or knocking noise when the car is driven over bumps or uneven road surfaces. The noise is noticed after the car has been driven for a while and is warmed\-up, and when the temperature outside is warm. The condition can be duplicated if the brakes are applied while the car is driven over bumps. High ambient temperatures at the hydraulic guide links cause the noise.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2013/MC-10121406-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2013/MC-10121406-0001.pdf)

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

## Components

Brakes, Suspension

## Vehicles listed

- 2009 to 2010 AUDI A4
- 2013 to 2014 AUDI A4 ALLROAD
- 2011 to 2012 AUDI A4 AVANT
- 2008 to 2013 AUDI A5
- 2010 to 2014 AUDI A5 CABRIOLET
- 2009 to 2014 AUDI Q5

## Other bulletins for the same vehicles and component

- [TSB\_2075120\_3](/bulletins/11036921.md), 2026-09-04, Service bulletin: SERVICE BRAKES. This bulletin provides information about the general approach for brake vibration concerns.
- [TSB\_2072304\_4](/bulletins/11036914.md), 2026-09-04, Service bulletin: SERVICE BRAKES. This bulletin provides information when there is an ABS/ESC speed sensor implausible signal.
- [TSB\_2069904\_3](/bulletins/11036911.md), 2026-09-04, Service bulletin: SERVICE BRAKES. This bulletin provides information for all models regarding brake sounds.
- [TSB\_2069078\_4](/bulletins/11036909.md), 2026-09-04, Service bulletin: SERVICE BRAKES. This bulletin provides information on the zirconium insercts in the brake piston \(ceramic brakes only\).
- [TSB\_2023187\_8](/bulletins/11030983.md), 2026-04-07, Service bulletin: SUSPENSION. This bulletin provides informaiotn regarding squeaking noises when steering or maneuvering.
- [TSB\_2069904\_2](/bulletins/11025369.md), 2025-11-08, Service bulletin: SERVICE BRAKES. This bulletin provides information for all models regarding brake sounds.
- [TSB\_2075120\_2](/bulletins/11025342.md), 2025-11-08, Service bulletin: SERVICE BRAKES. This bulletin provides information regarding the general approach for all Audi vehicles regarding brake vibrations.
- [TSB\_2072304\_3](/bulletins/11025336.md), 2025-11-08, Service bulletin: SERVICE BRAKES. This bulletin provides information when there is an ABS/ESC speed sensor implausible signal.
- [TSB\_2069078\_3](/bulletins/11025333.md), 2025-11-08, Service bulletin: SERVICE BRAKES. This bulletin provides information on the zirconium insercts in the brake piston \(ceramic brakes only\).
- [A3725312074822\_2](/bulletins/11013709.md), 2025-02-05, Service bulletin: SUSPENSION. This bulletin provides information when noises from wheel input shaft/drive shaft are reported.

JSON: [/v1/bulletins/10121406](/v1/bulletins/10121406)

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