Unless it’s very specific to something that happened during the WUV-07 campaign, please keep all conversations in this WRK-21 thread.
ALSO…
If you were part of this WUV-07 campaign, you may have noticed that it has disappeared from your recall list on the Return of Subaru page because the WRK-21 replaced it.
RECALL: WRK21 / NHTSA Campaign 21V955000 – Ascent CVT Chain Slip/Chain Guide Breakage
- UPDATE:
Due to parts shortages, the drug is expected to be available in limited quantities starting in August 2022. - Type: Security
- Safety Reminder: WRK21
- NHTSA Campaign: 21V955000
- Date: December 9, 2021
- Title: CVT Mount Slip Chain/Chain Guide Breakage
- Solution: open – the drug is not yet available
SOCIETY RECALL OF THE DOCUMENT:
4 Affected Products
Vehicles
�
| I DO | pattern | YEAR |
|---|---|---|
| SUBARU | ATTACHMENT | 2019-2020 |
| SUBARU | INHERITANCE | 2020 |
| SUBARU | OUTBACK | 2020 |
14 Accompanying documents
Canadian Owners:
About the new TCM code:
- Shift dynamics (I just coined that term, but you get the gist, I hope) aka shift logic, has been changed (improved)
- AWD transfer clutch TCM code is updated for smoother operation
- The variator pressure adjustment code has been changed to ensure that variators are fully at clamping pressure (based on torque input) before the forward/reverse shift mechanism engages the forward clutch
In more detail:
- This will address some complaints about how the car drives (too harsh, at odd times, etc.)
- This will slightly address complaints about vibration when cornering, as well as (although it’s not specifically written anywhere for you all to see) address the wobbly issues where the rear wheels are picking up a bunch of the car’s load when going right.
- This will prevent damage to the chain guide as well as prevent chain slippage caused by incorrect variator clamping pressure when the front derailleur is engaged.
What it won’t do:
- It will NOT get rid of the tweet. It’s part of how the system is designed.
- It will NOT fix an already damaged AWD transfer clutch – that will have to be replaced in conjunction with (or after) reprogramming.
NOTE 01:
NHTSA’s summary was poorly written by NHTSA and confusingly describes the situation. By “improperly secured chain” they mean the programming does not set/maintain the chain hold pressure properly.
NOTE 02:
Everything Subaru Ascents that completed the previous CVT programming/chain recall are part of this recall.
Description
Subaru of America, Inc. (Subaru) is initiating a new safety and emissions recall for certain 2019 – 2020 model year Ascent vehiclesOlder 2020 turbo vehicles and 2020 model year turbo Outback vehicles in which the Continuously Variable Transmission (CVT) chain may slip and/or break.
Security Risk
Due to an improper program, the CVT chain can slip, resulting in the chain guide breaking. If the chain guide breaks, fragments of the guide can obstruct the shift selector mechanism. If the vehicle continues to operate with the drive chain slipping, over time the CVT drive chain may break.
medicament
For all vehicles that may be affected, Subaru dealers will reprogram the TCU. Historical TCU data will be analyzed for chain slip characteristics and the chain guide will be visually inspected. If the vehicles are confirmed to have drive chain slippage or if the chain guide is damaged, the transmission assembly will be replaced. For any potentially affected vehicle, all necessary corrective repairs will be completed at no cost to the customer.
Notifications
As required by Federal Regulations, all will receive physical old mail notices from Subaru of America within the notice period required by NHTSA – and then receive app and head unit notifications.
If you don’t feel like waiting to find out, you can check online at Subaru’s website.
WAIT:
The drug is supposed to be available April 2022 May 2022?. Due to parts shortages, the drug is expected to be available in limited quantities starting in August 2022. As I said earlier, my expectation was that Subaru needs time to release the final program and get enough test vehicles to all dealers. This is confirmed in their letter to NHTSA.
Cause information:
Due to an inappropriate program, if the shift selection is moved to forward or reverse (D or R) immediately after the engine is started, the secondary independent pressure control program may allow the forward/reverse clutch (“Clutch F/ R”) to initiate engagement before sufficient secondary clamping pressure has been applied to the drive chain.,
The short version: instead of the boost filling the pulleys and then engaging the forward/reverse clutch, it engaged the clutch that sends power through the variators to the wheels early.
CHECK YOURS HERE:
Visit Subaru.com for up-to-date and accurate vehicle recall information. Check the VIN number for all available recall solutions. Your safety is our priority.
www.subaru.com
CarFax, KBB and other sites are NOT completely accurate. The only correct places are the Subaru Recall site (link above), the Subaru app (after sending the physical notices), and NHTSA.
More details to follow soon…
Incidentally…
Mine is one of the affected cars.
THERE ARE ONLY THREE CATEGORIES…
@E-EC-ECU perfectly describes the three categories that those of us with 2019 and 2020 Ascensions fall into
(2021+ Ascent owners have the new programming and this does not apply)
Here is what he writes below:
There are three categories of people when it comes to your Ascension and this reminder. Only three!,
,
1.) Your car is exhibiting the same behavior advertised in the recall for a CVT chain that is slipping and/or the guide is affected and/or detached. Or, your transmission is a complete mess and your car is “unsteerable”.,
- For these people … take your car to the dealer to be inspected and fixed. If the CVT chain is actively slipping and the transmission is not working properly, Subaru will replace the CVT.
- Yes, you will get a new CVT WITH the new programming as it has already been made available (thanks @Robert.Mauro). If it’s a completely separate issue and it’s still unaddressed…they’ll fix that too (as they have for 3 years now).
,
2.) (My situation) Your car exhibits some “strange” behavior from time to time (rpm instability, shuddering, “searching for gears”), and you think, “hell this can fix all of that”.,
- To this group of people … keep driving your car and take it with you when towing becomes available.
- BUT … If this group ever finds themselves in a situation where their CVT fails and they are now a member of Group 1 (above) … GET IT. They will not wait for this recall to fix your car if your CVT is shot. The recall concerns the subsequent inspection repair if diagnosed. No repair is delayed for a known problem.
,
3.) (These people I really feel sorry for) Your car shows ZERO indicators from this recall, and you are trying to sell it. ,
- I can’t say much about this group because the used car market is very high right now, and NOT selling a car based on a recall that can’t be fixed yet is unfortunate.. to say the least. at least. I feel for this group.
,
The key thing to remember is that this recall is to inspect and diagnose all possible vehicles affected by this particular set of circumstances. Hence the tools and equipment that are manufactured and delivered to do just this inspection. If you won’t drive your car due to a faulty transmission with a thrown control arm and other major issues, this recall is completely secondary to your current situation. The recall is simply to inspect the transmissions of the applicable cars and proactively replace any CVT showing indicators.,
,
Basically, if your transmission is a big problem right now, go get it fixed. They will not refer to this recall when trying to delay any adjustment. This recall is not about the actual transmission repair (replacing the CVT) but is the inspection and analysis to make sure they catch all the transmissions that ARE displaying the behavior. Then, applying the actual repair.,
