RECALL: WRK21 / NHTSA Campaign 21V955000 - Ascent CVT Chain Slip/Chain Guide Breakage
- Type: Safety
- Safety Recall: WRK21
- NHTSA Campaign: 21V955000
- Date: December 9, 2021
- Title: Ascent CVT Chain Slip/Chain Guide Breakage
- Remedy: Open - remedy not yet available
RECALL DOCUMENT FILES:
To retailers:
To NHTSA:
Vehicle Specifics (aka: "Part 573 Safety Recall Report"):
Canadian Owners:
NOTE 01:
The NHTSA Summary was poorly written by NHTSA and confusingly describes the situation. By "improperly secured chain" they mean that the programming doesn't properly set/maintain chain clamping pressure.
NOTE 02:
All Subaru Ascents that had the previous CVT programming/chain slip recall completed are a 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 vehicles, 2020 model year turbo Legacy vehicles, and 2020 model year turbo Outback vehicles in which the Continuously Variable Transmission (CVT) chain may slip and/or break.
Safety Risk
Due to an improper program, the CVT chain may slip, resulting in breakage of the chain guide. If the chain guide breaks, fragments of the guide could inhibit the shift select mechanism. If the vehicle continues operation with the drive chain slipping, over time the CVT drive chain could break.
Remedy
For all potentially affected vehicles, Subaru dealers will reprogram the TCU. The historical TCU data will be analyzed for chain slip characteristics and the chain guide will be visually inspected. If vehicles are confirmed to be experiencing drive chain slip or if the chain guide is damaged, the transmission assembly will be replaced. For each potentially affected vehicle, all remedy repairs necessary will be completed at no cost to the customer.
Notifications
As required by Federal Regulations, everyone will get physical old-school mail notifications from Subaru of America, within the NHTSA required notification period - and
then receive app and head unit notifications.
If you don't feel like waiting to find out, you can check online on Subaru's website.
WAIT:
The remedy is supposed to be available April 2022. As I'd said earlier, my expectation was that Subaru needs the time to release the final programming and get enough of the test tools to all dealerships. That's confirmed in their letter to NHTSA.
Cause Information:
Due to an improper program, if the shift select was moved to drive or reverse (D or R) immediately after the engine was started, the independent secondary pressure control program may allow the forward/reverse clutch (“F/R clutch”) to begin engagement before enough secondary clamping pressure has been applied to the drive chain.
Short version: instead of surge filling the pulleys and then engaging the forward/reverse clutch, it engaged the clutch that sends power through the variators to wheels early.
CHECK YOURS HERE:
Visit Subaru of America for reviews, pricing and photos of Subaru Cars, Sedans, SUVs. Find a Subaru Retailer Information.
www.subaru.com
CarFax, KBB and the other sites are NOT fully accurate. The only accurate places are Subaru Recall page (link above), Subaru app (once physical notifications are sent), and NHTSA.
More details to follow soon...
Incidentally...
Mine is one of the affected cars, and I will likely be getting a new CVT.
THERE ARE ONLY THREE CATEGORIES...
@E-EC-ECU perfectly describes the three categories those of us with 2019 and 2020 Ascents fall into
(2021+ Ascent owners have the new programming, and this doesn't apply)
Here's what he wrote, below:
There are three categories of people when it regards to your Ascent and this recall. Just three!
1.) Your car is exhibiting the same behavior advertised in the recall for a slipping CVT chain and/or the guide has been impacted and/or broken off. Or, your transmission is a complete mess and your car is "undriveable".
- For these folks ... take your car in to the dealership to get inspected and fixed. If it is actively slipping the CVT chain and the transmission is not performing correctly, 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 is a completely separate issue and is still undriveable ... they will fix that too (just like they have been doing for 3 years now).
2.) (My situation) Your car exhibits some "weird" behavior from time to time (rpm instability, shuddering, "searching for gears"), and you think, "heck this might fix all of that".
- For this set of people ... keep driving your car and take it in when the recall is made available to you.
- BUT ... If this group ever finds themselves in a situation where their CVT fails and they are now a member of Group 1 (above) ... TAKE IT IN. They aren't going to wait for this recall to fix your car if your CVT is shot. The recall is about inspection subsequent repair if diagnosed. It does not delay any repairs for a known issue.
3.) (These folks I truly feel sorry for) Your car exhibits ZERO indications from this recall, and you are trying to sell it.
- Not much I can say about this group because the used car market is so high right now, and to NOT be able to sell a car based on a recall that can't be fixed yet is unfortunate .. to say the least. I feel for this group.
The main thing to remember is that this recall is to inspect and diagnose all the potential vehicles impacted by this particular set of circumstances. Hence the tools and equipment being manufactured and delivered to simply make this inspection. If you won't drive your car because of the faulty transmission with a thrown guide arm and other major problems, this recall is completely secondary to your current situation. The recall is simply to inspect the transmissions of applicable cars and proactively replace any CVT that shows indicators.
Basically, if your transmission is a major problem right now, go get it fixed. They aren't going to reference this recall when trying to delay any fix. This recall isn't about the actual transmission repair (CVT replacement), rather it's the inspection and analysis to make sure they catch all transmissions that are exhibiting the behavior. Then, applying the actual repair.