# Service bulletin WUV\-07

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: 10169856
- Published by NHTSA: 2020\-01\-07
- Manufacturer's number: WUV\-07
- Manufacturer's date: 2019\-12\-05
- NHTSA component: POWER TRAIN

## NHTSA's summary

Subaru of America, Inc. \(Subaru\) is recalling certain 2019 model year Ascent vehicles in which midjoint of the transmission hydraulic sensor harness was made with dissimilar materials \(tinplate and copper\) which may cause an oxide film to form. If an oxide film forms, the electrical resistance may increase, potentially causing an incorrect measurement of the hydraulic pressure. If the fluid pressure is measured higher than its actual value, the Transmission Control Unit \(TCU\) programming was not robust enough to compensate for variation and would instruct the valve to lower the hydraulic pressure, thus potentially reducing the tension on the drive chain. Customers may experience irregular noise and/or vibration while driving, and/or warning lamp illumination. A total of 76,842 U.S. vehicles will be affected by this recall.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10169856-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10169856-9999.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2019 SUBARU ASCENT

## Recalls for the same vehicles and component

- [2021745](/recalls/tc/2021745.md), 2021-12-10: Powertrain
- [21V955000](/recalls/nhtsa/21V955000.md), 2021-12-09: POWER TRAIN:DRIVELINE:CHAIN/BELT; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)
- [2019605](/recalls/tc/2019605.md), 2019-12-02: Powertrain
- [19V855000](/recalls/nhtsa/19V855000.md), 2019-12-02: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)
- [19V519000](/recalls/nhtsa/19V519000.md), 2019-07-10: POWER TRAIN:DRIVELINE:DRIVESHAFT

## 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\-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\-150\-24R](/bulletins/11036808.md), 2026-09-03, Service bulletin: POWER TRAIN. This bulletin announces availability of new reprogramming files developed to address SYMPTOM 1: A jerk or judder sensation felt from the powertrain during braking with the air conditioning on. SYPMTOM 2: A shudder is felt from the powertrain along with a screeching type of sound. 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.
- [16\-151\-24R](/bulletins/11034271.md), 2026-07-02, Service bulletin: POWER TRAIN. This bulletin provides guidance when diagnosing chain slip, judder, shudder, and hesitation concerns on the TR690 model CVT transmissions used in the models listed. \(This is an revised version of the original bulletin.\)
- [18\-241\-26](/bulletins/11033077.md), 2026-06-01, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. This Bulletin announces a correction to the diagnostic procedures for certain CVT related DTCs, including P0730, P0746, P0747, P0841, P0846, P0867, P1867, P1894, and P2723.
- [16\-157\-26](/bulletins/11033061.md), 2026-06-01, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM. This bulletin announces a design change to the TR690 CVT control valve body which features an enhanced line pressure sensor O\-ring, designed to prevent abnormal sensor readings caused by O\-ring leakage.
- [SubaruNet Announcement \(R](/bulletins/11033056.md), 2026-06-01, Other: POWER TRAIN. This announcement provides information on the remanufactured CVT transmission program.
- [16\-155\-25R](/bulletins/11032037.md), 2026-05-04, Service bulletin: POWER TRAIN. In the interest of customer satisfaction, Subaru of America, Inc. \(SOA\) is extending the New Car Limited Powertrain Warranty coverage for the Continuously Variable Transmission \(CVT\) on the above listed models and model years from the original five \(5\) years or sixty thousand \(60,000\) miles \(whichever comes first\) to ten \(10\) years or one\-hundred thousand \(100,000\) miles \(whichever comes first\).

JSON: [/v1/bulletins/10169856](/v1/bulletins/10169856)

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