Service bulletin 16-158-26

Manufacturer communication, from NHTSA Manufacturer Communications

Published by NHTSA: Sep 3, 2026
Manufacturer: SUBARU
NHTSA ID: 11036814
NHTSA category: Service Bulletin/Repair Instructions
Applies to, as stated by NHTSA: SUBARU CROSSTREK 2018-2026; SUBARU FORESTER 2019-2026; SUBARU IMPREZA 2017-2026; SUBARU LEGACY 2018-2025; SUBARU OUTBACK 2018-2026
Component, as stated by NHTSA: POWER TRAIN

Text of the manufacturer communication

This bulletin provides guidance when diagnosing chain slip, judder, shudder, and hesitation concerns on the TR580 model CVT transmissions used in the models listed.

Manufacturer document number: 16-158-26
Date of the communication: 2026-08-20

View original source on NHTSA.gov

Documents filed with NHTSA (PDF)

Bulletin

NHTSA reuses some ID numbers across record types. If its page lists more than one record, this one is the manufacturer communication dated Sep 3, 2026.

For the 2020 Subaru Outback

Premium

Interrupt

Relevance of 89% and interrupt probability of 60% are both one half or more.

Vehicle relevance: 89%
Attention: 74%
Interrupt probability: 60%

Importance to this owner: 3.3 of 4, important
Vehicle area the notice is about: Transmission

Interrupt the owner

This manufacturer communication appears highly relevant to this vehicle configuration and warrants attention based on the vehicle state.

Decided by jev-1.13.0 in 122 ms from 1,629 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
YesNHTSA names this model (listed as OUTBACK)
YesNHTSA lists model year 2020 for this model

The same notice, every vehicle

Relevance	Attention	Interrupt	State
89%	74%	60%	Interrupt
2%	4%	5%	Ignored
2%	6%	6%	Ignored
1%	4%	4%	Ignored
1%	5%	6%	Ignored
1%	4%	5%	Ignored
1%	5%	5%	Ignored
1%	4%	5%	Ignored
1%	4%	5%	Ignored
1%	4%	5%	Ignored
1%	6%	6%	Ignored
1%	4%	5%	Ignored
1%	4%	4%	Ignored
1%	4%	5%	Ignored
1%	4%	4%	Ignored
1%	4%	5%	Ignored

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