# Service bulletin No. D4a

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: 10176894
- Published by NHTSA: 2020\-07\-02
- Manufacturer's number: No. D4a
- Manufacturer's date: 2020\-06\-03
- NHTSA component: EQUIPMENT

## NHTSA's summary

Document showing the evolution of Porsche models since 1948.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10176894-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10176894-9999.pdf)

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

## Components

Equipment and accessories

## Vehicles listed

- PORSCHE PORSCHE

JSON: [/v1/bulletins/10176894](/v1/bulletins/10176894)

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