Subarunet Announcement
To: All Subaru Retailers
From: Subaru of America, Inc.
Date: November 26, 2019
New STOP SALE/Safety Recall: WUV-07– CVT Chain Slip Recall
Subaru of America, Inc. (Subaru) is initiating a new safety recall for certain 2019 model year Ascent
vehicles in which the Continually Variable Transmission (CVT) chain may slip.
Description of the Defect and Safety Risk
The CVT chain may slip resulting in irregular noise, vibration, hesitation while driving, and/or MIL
illumination. If driving under this condition continues, the vehicle may experience a loss of motive
power, increasing the risk of a crash.
Affected Vehicles
A total of 76,842 U.S. vehicles will be affected by this recall, as listed below:
Model Year
Carlines
Production Date Range
2019
Ascent
February 22, 2018 – May 7, 2019
Not all vehicles in the production ranges listed above are affected by these recall. Coverage must be
confirmed by using the Vehicle Coverage Inquiry function on subarunet.com prior to repair.
Coverage information will be available today.
Service, Parts, and Claim Instructions
Reprogramming PAK files are currently available. Detailed service, parts, and claim information will be
available in the WUV-07 Product Campaign Bulletin early next week. Until that bulletin is available,
please refer to the service procedure and claim submission information at the end of this message.
Retailer Responsibility
Any vehicles listed in any recall/campaign that are in retailer stock must be:
▪
▪
▪

Immediately identified
Tagged or otherwise marked to prevent their delivery or use prior to repair
Repaired in accordance with the repair procedures outlined in the Product Campaign Bulletin

Retailers are to promptly perform the applicable service procedures, to correct all affected vehicles in
their inventory (used, demo & SSLP). Additionally, whenever a vehicle subject to this recall is taken into
retailer inventory necessary steps should be taken to ensure the recall correction has been made before
selling or releasing the vehicle.

Please be advised that it is a violation of Federal law for a dealer to deliver a new motor vehicle
covered by a recall under a sale or lease until the defect is remedied. Therefore, any Authorized Subaru
Retailer failing to perform the applicable service procedures to correct all affected vehicles in their
inventory prior to the vehicle being placed in service may be subject to civil penalties of up to $21,000
per violation (i.e., for each vehicle), as provided in 49 CFR §578.6 and will also be in breach of the
Subaru Dealer Agreement.
Owner Notification
Subaru will notify affected vehicle owners by first class mail within 60 days. Owners with a valid email
address on file will also be notified by email. Retailers will be advised when the notification is scheduled.

CONTINUED ON NEXT PAGE…

Service procedure and Claim Information
WUV-07 Service Procedure
Flow Chart:

PARTS INFORMATION:
In a VERY RARE case where the CVT assembly or CVT wiring harness replacement is determined to be
necessary, the parts ordering information is below:
• Transmission Harness: 24031AA851
NOTE: NEVER use old harness p.n. 24031AA850 for this repair. Any remaining inventory of this p.n.
must be scrapped.
• CVT Assembly: 31000AK130 for Ascent WITH auxiliary CVTF Cooler
• CVT Assembly: 31000AK140 for Ascent WITHOUT auxiliary CVTF Cooler
SERVICE PROCEDURE:
REMINDER: Customer satisfaction and retention starts with performing quality repairs.
Step 1- Connect the SSM4 and perform a DTC Check to see if any of the following DTCs are stored in
either the TCM “Current” or “History” memory.

•

DTC P0842, P0867 or NO DTCs stored: Proceed to Step 2 and check for any abnormal sounds or
vibration while performing stall test and test drive. See applicable Service Manual for stall test
procedure.

•

DTC P0730 or P0757 stored (very rare case): Replace the CVT assembly following the procedure
in the applicable Service Manual. When complete, clear the TCM of any DTCs and proceed to
Step 4.

Step 2- Perform a stall test and test drive the vehicle to check for any abnormal noise or vibration.
IMPORTANT NOTE: A brief chirp -type sound heard when engaging R or D is a non-detrimental
characteristic of this model CVT.
• No abnormal sounds or vibration detected during stall test and test drive: proceed to STEP 3.
•

Abnormal sounds or vibration detected: replace the CVT assembly following the procedure in
the applicable Service Manual. When complete, proceed to STEP 4.

Step 3- Was DTC P0842 or P0867 stored in the TCM while performing Step 1 above?
•

No DTCs stored: proceed to Step 4 and reprogram the TCM.

•

P0842 or P0867 is stored (very rare case): replace the CVT harness. See the applicable Service
Manual for the CVT harness replacement procedures. For more experienced Subaru
Technicians, an alternative procedure is provided in the Harness Replacement Tips section
below. When harness replacement is complete, clear the TCM memory of any codes, proceed
to Step 4.

Step 4- Reprogram the TCM following the normal FlashWrite procedure and perform the CVT Relearn
procedure supplied in the applicable Service Manual.
IMPORTANT CAUTIONS:
•
•
•
•
•
•

The PAK file is different for each car model.
Turn off all the electrical components to prevent the vehicle battery from going dead.
The Transmission Control Module may be damaged if the reprogramming is interrupted due to
the PC battery going dead during the reprogramming, etc.
Supply power to the PC at all times during reprogramming.
Never turn off the PC power before reprogramming is completed.
NEVER disconnect any of the cables (power supply, DLC, USB cable) during reprogramming.

Pack File Applicability:

Model
Ascent WITH
Auxiliary CVTF
Cooler
Ascent
W/OUT
Auxiliary CVTF
Cooler

PAK File Name

New TCM
Part
Number

Old TCM Part
Numbers

Decryptio
n
Keyword

New TCM
CID Number

30919AF99C.pak

30919AF99C

30919AF99A,
99B

06F4F4FF

R8FEF700

30919AF98C.pak

30919AF98C

30919AF98A,
98B

2DAA4E53

R8FEE700

Subaru of America, Inc. (SOA) highly recommends connecting either the Subaru Midtronics DCA-8000
Dynamic Diagnostic Charging System or the Subaru Midtronics GR8-100 Diagnostic Battery Charger to
the vehicle and utilizing the Power Supply Mode feature anytime a vehicle control module is being
reprogrammed.
Once the Midtronics charger is connected to the vehicle, if the battery is fully charged, it takes less than
three (3) minutes to boot-up the charger, select the Power Supply Mode, and have the battery voltage
stabilized and ready for reprogramming.
NOTES:
• For instructions on using the power supply mode, reference the applicable User Manual for the
Midtronics DCA-8000 Dynamic Diagnostic Charging System and the Midtronics GR8-1100
Diagnostic Battery Charger on STIS.
• Confirm all electrical loads such as lights, audio, HVAC, seat heaters, and rear defroster are all
switched OFF before setting up the charger for Power Supply Mode.
• Select the correct battery type (Flooded, EFB, Gel, AGM or AGM Spiral).
• Input the CCA which matches the vehicle’s battery. NOTE: OE and replacement batteries have
different CCA ratings. Always confirm the battery’s CCA rating before proceeding.
• If using a DCA-8000 Dynamic Diagnostic Charging System, set the power supply voltage to 13.5
volts.
• DO NOT connect the DST-i or SDI until the Power Supply mode function has completed its
battery test mode and the Charging Voltage has dropped to and shows a steady 13.5 Volts on
the display.
• Once Power Supply Mode reaches a steady 13.5 volts, connect the DST-i or SDI to the OBD
connector and proceed with initiating the normal FlashWrite reprogramming process.
• Amperage will fluctuate based upon the vehicle’s demand for power. NOTE: If the voltage rises
beyond 14V while programming is in process, the procedure will abort. This can indicate a need
to test or charge the vehicle battery before any further attempt at programming is made.
VERY IMPORTANT:
This information is applicable to the Subaru Midtronics DCA-8000 Dynamic Diagnostic Charging System
and the Subaru Midtronics GR8-1100 Diagnostic Battery Charger ONLY. It does not apply to any other

brand / type of “generic” battery charger whatsoever. ONLY the DCA-8000 and the GR8-1100 and their
Power Supply Mode feature have been tested and approved by SOA.
REMINDER: If the DCA-8000 or GR8-1100 indicates the vehicle’s battery must be charged, charge it fully
using the DCA-8000 or GR8-1100 before proceeding to reprogram the vehicle using the Power Supply
Mode.
NOTE: Control module failures resulting from battery discharge during reprogramming are not a matter
for warranty. Should any DTCs reset after the reprogramming update is performed, diagnose per the
procedure outlined in the applicable Service Manual.
Using the SSM4, clear the AT Learning Data using the following procedure:
• Start > Diagnosis > Vehicle Selection > Each System > Transmission > Work Support > Clear AT Learning
Data.
• Click “YES” and when “Execute Clear AT Learning” is displayed, click “YES” again.
• Turn the ignition OFF, wait at LEAST 30 seconds then turn the ignition back ON. At this point, the AT
Temp light will start blinking; 4 times in 2 seconds to signify the Clear AT Learning procedure has
completed successfully. If the AT Temp light does not flash as described, repeat Step 2 again from the
beginning.
Using the SSM4, perform the AT Learning Control following the procedure outlined in the applicable
Service Manual.
IMPORTANT: The NEW Calibration Identification number (CID) for any newly-installed programming (as
confirmed from the actual control module AFTER installation) MUST be noted on the repair order as this
information is required for claim submission.
NOTE: The pack file listings provided in this bulletin are the latest available at the time of
publishing. Updates are often released thereafter without revision to the original bulletin. For this
reason, it is critical to always have the latest version of Select Monitor software installed on your
system. You can confirm if a later version is available by entering the CID listed in this bulletin into
FlashWrite. If a newer CID is shown as available in FlashWrite, reprogram using that file.

Harness Replacement Tips:
The following is being presented as an allowable alternative procedure for more experienced Subaru
trained Technicians. The CVT wiring harness can be replaced without removal of the CVT assembly
using the procedure below:
•
•

Remove the battery ground terminal, intercooler and the pitching stopper following the
procedures in the applicable Service Manual.
Disconnect the CVT harness bracket, the ground terminal and the primary speed sensor harness
connector as shown in the photos below.

•
•

•

RIGHT
Side

LEFT
Side

Raise the vehicle. Remove the center exhaust pipe (rear), selector cable, CVT oil pan, drain the
CVTF
and remove the propeller shaft following the procedures in the applicable Service Manual.
Set a transmission stand in place as shown below and remove the transmission rear cross
member. CAUTION: NEVER place any stand or jack on the transmission pan as damage will
occur which could lead to CVT failure.

Lower the transmission stand by NO MORE THAN 75mm. Remove the 6 bolts securing the
transmission cover then CAREFULLY slide cover toward the rear of the vehicle.

CAUTION: Never lower the transmission stand by more than 75mm or the A/C hose may be damaged.
NOTE: TAKE YOUR TIME when removing the transmission cover being careful to not catch the inside of
it on the external components of the CVT.

•

CAREFULLY remove the harness connectors and retaining clips shown below and remove the
CVT harness from the CVT housing.

•

CAREFULLY remove the control valve body closely following the procedure in the applicable
Service Manual and remove the CVT harness.

•
•

Install the new transmission harness, reassemble in reverse order of disassembly.
When complete clear the TCM memory of any DTCs, reprogram the TCM following the normal
FlashWrite procedure and, perform the CVT Relearn procedure supplied in the applicable
Service Manual.

Claim Reimbursement and Entry Procedures:
Credit to perform this recall will be based on properly completed repair order information. Retailers
may submit claims through Subarunet.com.
Labor
Operation #

Labor
Time

TCM REPROGRAMMING, Includes: DTC Check, Stall
Test, Test Drive and CVT Relearn Procedure

A186-701

0.9

CVT REPLACEMENT, Includes: TCM Reprogramming,
DTC Check, Stall Test, Test Drive and CVT Relearn
Procedure

A130-341

5.6

CVT HARNESS REPLACEMENT, Includes: TCM
Reprogramming, DTC Check, Stall Test, Test Drive
and CVT Relearn Procedure

A130-342

6.8

Labor Description

Fail Code

WUV-07

IMPORTANT REMINDERS:
•
•
•

SOA strongly discourages the printing and/or local storage of service information as previously
released information and electronic publications may be updated at any time.
Always check for any open recalls or campaigns anytime a vehicle is in for servicing.
Always refer to STIS for the latest service information before performing any repairs.