Service bulletin TSTR2644

Manufacturer communication, from NHTSA Manufacturer Communications

Published by NHTSA: Sep 4, 2026
Manufacturer: PORSCHE
NHTSA ID: 11037080
NHTSA category: Service Bulletin/Repair Instructions
Applies to, as stated by NHTSA: PORSCHE PIWIS TESTER III (model year not stated)
Component, as stated by NHTSA: UNKNOWN OR OTHER

Text of the manufacturer communication

Information on PIWIS Tester update 44.300.011. PIWIS Tester update applies to all Porsche models that have an OBD2 port.

Manufacturer document number: TSTR2644
Date of the communication: 2026-07-27

View original source on NHTSA.gov

NHTSA reuses some ID numbers across record types. If its page lists more than one record, this one is the manufacturer communication dated Sep 4, 2026.

For the 2022 Porsche 911

Carrera S (992)

Ignored

Relevance of 44% is under one half, so the notice is ignored whatever the other figures say.

Vehicle relevance: 44%
Attention: 24%
Interrupt probability: 12%

Importance to this owner: 1.0 of 4, minor
Vehicle area the notice is about: None

This manufacturer communication does not appear to warrant attention for this vehicle.

Decided by jev-1.13.0 in 162 ms from 1,546 input tokens. Jev returns these figures and nothing else. It gives no reasons, and none are written for it here. The figures describe how relevant the notice is, not the condition of any vehicle.

Checked by code against NHTSA's fields

A plain comparison with the structured fields NHTSA filled in. Separate from Jev's decision.

YesNHTSA names this make
NoNHTSA names this model
n/aNHTSA lists model year 2022 for this model

The same notice, every vehicle

Relevance	Attention	Interrupt	State
44%	24%	12%	Ignored
3%	7%	8%	Ignored
2%	5%	6%	Ignored
2%	5%	6%	Ignored
2%	5%	6%	Ignored
2%	5%	7%	Ignored
2%	6%	7%	Ignored
2%	6%	7%	Ignored
2%	5%	5%	Ignored
2%	5%	5%	Ignored
2%	6%	6%	Ignored
2%	5%	5%	Ignored
2%	5%	6%	Ignored
2%	6%	6%	Ignored
2%	4%	5%	Ignored
2%	5%	7%	Ignored

Select a vehicle to see its attention and interrupt figures above.