# Service bulletin 16\-121\-19

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: 10161819
- Published by NHTSA: 2019\-07\-01
- Manufacturer's number: 16\-121\-19
- Manufacturer's date: 2019\-05\-09
- NHTSA component: ENGINE; POWER TRAIN

## NHTSA's summary

This bulletin provides a procedure for addressing a limited number of concerns involving a tapping \-type sound originating from the area where the engine and CVT are joined. On affected vehicles, the sound can be heard easiest after the engine is fully warmed up.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10161819-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10161819-9999.pdf)

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

## Components

Engine, Transmission and driveline

## Vehicles listed

- 2017 to 2019 SUBARU CROSSTREK
- 2017 to 2019 SUBARU IMPREZA

## Recalls for the same vehicles and component

- [21V264000](/recalls/nhtsa/21V264000.md), 2021-04-15: ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; ELECTRICAL SYSTEM:IGNITION; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
- [19V856000](/recalls/nhtsa/19V856000.md), 2019-12-02: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\)
- [2019527](/recalls/tc/2019527.md), 2019-10-17: Engine
- [2019526](/recalls/tc/2019526.md), 2019-10-17: Engine
- [2019525](/recalls/tc/2019525.md), 2019-10-17: Engine
- [19V745000](/recalls/nhtsa/19V745000.md), 2019-10-17: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\)
- [19V744000](/recalls/nhtsa/19V744000.md), 2019-10-17: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\)

## Other bulletins for the same vehicles and component

- [SubaruNet Announcement \(T](/bulletins/11037942.md), 2026-10-05, Other: POWER TRAIN; ELECTRICAL SYSTEM. This announcement provides information on an enhancement of the TechShare CVT diagnostic assitance application.
- [16\-158\-26](/bulletins/11036814.md), 2026-09-03, Service bulletin: POWER TRAIN. This bulletin provides guidance when diagnosing chain slip, judder, shudder, and hesitation concerns on the TR580 model CVT transmissions used in the models listed.
- [16\-156\-25R](/bulletins/11036810.md), 2026-09-03, Service bulletin: POWER TRAIN. This bulletin announces a design change made to the CVT Control Valve Body. The updated valve body incorporates an enhanced valve sleeve to improve durability. This is an revised version of the original bulletin.
- [16\-154\-25R](/bulletins/11036809.md), 2026-09-03, Service bulletin: POWER TRAIN. This Service Information Bulletin announces the release of a new diagnostic assistance application for TR690 and TR580 CVT\-equipped vehicles. This is an revised version of the original bulletin.
- [16\-132\-20R](/bulletins/11036806.md), 2026-09-03, Service bulletin: POWER TRAIN. This Bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions used in the models listed. This is an revised version of the original bulletin.
- [SubaruNet Announcement \(C](/bulletins/11036804.md), 2026-09-03, Other: ELECTRICAL SYSTEM; POWER TRAIN. This Announcement provides diagnostic assistance for CVT issues.
- [02\-193\-24R](/bulletins/11034269.md), 2026-07-02, Service bulletin: ENGINE. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components \(e.g. intake valves and / or manifold, and combustion chambers\). \(This is an revised version of the original bulletin.\)
- [09\-74\-21R](/bulletins/11034264.md), 2026-07-02, Service bulletin: ENGINE; FUEL/PROPULSION SYSTEM. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components \(e.g. intake valves and / or manifold, and combustion chambers\). \(This is an revised version of the original bulletin.\)
- [16\-156\-25R](/bulletins/11034242.md), 2026-07-01, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. This bulletin announces a design change made to the CVT Control Valve Body which incorporates an enhanced valve sleeve to improve durability. \(This is an revised version of the orignal bulletin.\)
- [02\-193\-24R](/bulletins/11033065.md), 2026-06-01, Service bulletin: ENGINE. This bulletin provides updated parts information and a service procedure to follow for removing accumulated carbon deposits from fuel injectors and internal engine components \(e.g. intake valves and / or manifold, and combustion chambers\).

JSON: [/v1/bulletins/10161819](/v1/bulletins/10161819)

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