# Service bulletin 122\-K8M7U\-05

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: 10138267
- Published by NHTSA: 2018\-05\-21
- Manufacturer's number: 122\-K8M7U\-05
- Manufacturer's date: 2018\-04\-27
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; EQUIPMENT

## NHTSA's summary

Subject: Cayenne S \(9YA\) As of 2018 Front exhaust pipes Symptom: Buzzing/vibrating noises in the exhaust system area at an engine speed of approx. 1,100 rpm during deceleration. Cause: The exhaust system can expand in an unfavorable direction and become strained at operating temperature. Remedial Action: Loosen clamps on the exhaust system, bring the exhaust system to operating temperature and re\-position the clamps.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10138267-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10138267-0001.pdf)

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

## Components

Engine, Equipment and accessories, Exhaust and emissions, Exhaust manifold, pipes and muffler

## Vehicles listed

- 2018 PORSCHE CAYENNE

JSON: [/v1/bulletins/10138267](/v1/bulletins/10138267)

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