After replacing the valve body (part of cvt transmission). The car was released to me. Immediately upon leaving the dealership, the car kept jolting and shuddering, but no maintenance lights were lit on the dashboard. Upon returning it to the dealership, we were notified that the whole transmission would need to be replaced. Subaru is aware of the faulty transmission as they increased the cvt transmission warranty for approx 2010-2017 forester/outback/impreza/etc. cars to 10yr/ 100,000 miles. Upon further review, several other Subaru owners have expressed their transmissions needing to be replaced around 110,000-120,000 miles, most after just replacing the valve body. It appears Subaru knew the transmission was about to die, but they encouraged replacing just the valve body causing me to invest $2,200 knowing it would not fix the actual problem.
Subaru Forester shudder problems
33 of the 6,539 owner complaints about the Subaru Forester describe shudder or vibration when accelerating, most of them for the 2015 model year.
- owner complaints
- 33
- worst model year
- 2015
- typical repair cost reported
- $1,800
- typical mileage
- 45,000
By model year
Often reported together
Loss of power 7CVT failure 7Stalling 6Jerking 4Ball joint 3Slipping 2Check engine light 2Transmission failure 1
What owners say
Oil consumption issue starting within the first 3 years of owning the vehicle. Oil light comes on generally after driving 2,000 miles or less from the last oil change or oil fill up, but prior to the light turning on there are acceleration issues. Vehicle bucks and lunges when accelerating. Lunging seems to occur after vehicle seems to loose power to accelerate and then lunges forward shuddering as power returns. These issue worsen after oil light has come on. Vehicle feels very unsafe when trying to merge if acceleration is needed. Also almost hit from behind when car seems to lose power when trying to accelerate after stopping for a red light. Vehicle has been serviced repeatedly at dealership and oil consumption issues documented. Vehicle’s make/model with known oil consumption issues, but this vehicles VIN has not been included in recalls.
I was driving the car, towards the end of about a 40-minute drive the car, I can best describe, lost its mind. Without any prior signs of symptoms, in about the span of 5-10 seconds, the check engine light came on, then eyesight warning came on, then traction system error appeared and I lost all power. It started braking on its own and completely acting on its own. I could still steer, but I had no other control over the vehicle! THANKFULLY I was in a 25 MPH zone, with no other vehicles or pedestrians anywhere near me. I was able to steer the piece of junk into a vacant loading dock and at least get it off the street. I shudder to think what would have happened to me if the car did this on the interstate that I had exited from not five minutes prior to this incident. The car was rendered undriveable. I had it towed to the dealership. I don't know what is wrong with it yet as the dealer is closed on Sunday. This was an EXTREMELY DANGEROUS SITUATION! If the car lost its mind a mere five minutes earlier than it did, I could have been killed! I am still shaking from this incident.
When I am idling at a stop sign or sitting in traffic and I have come to a full stop, the car's engine shuts down as a gas-saving feature. This is not the problem! The problem is that sometimes when this feature engages, when I lift my foot off the brake to start driving again, a shrill constant ringing sound starts and the engine won't power back on. There is an error message that comes on that says "eyesight disabled." When this happens, none of these factors (the ringing, the error message, the dead engine) stop until I put the car in park and power it down completely, then restart the engine. Then none of the symptoms are there anymore and the car drives normally. I have not noticed any consistency about when this problem does or does not happen - it occurs in all weather types, temperatures, times of day, slopes/flat roads. I sometimes go months without it happening, and other times it happens twice in several days. The only consistent thing is that it only happens when the car is at a full stop and the engine has shuddered off to save gas. I live in Chicago and almost exclusively drive short distances in the city, I hardly do any highway driving. This has happened maybe 20 times since I bought the car in February, 2023.
My brake rotors warped at 6900 miles. They were resurfaced and covered under warranty. The shop indicated that because I washed my wheels in the course of a 4 minute car wash 3 blocks from my house that I caused them to warp. The symptoms included very rusty view from eye level and shuddering on braking. This was the front axle. Today I took car in at 42000 miles rotors and pads have to be replaced front and back rotors surfaced and pads replaced. My car was aok but sat for 2 weeks after Xmas and upon driving again they instantly suffered on braking and were very rusty. I am not a hard or fast braker. I do occasionally tow a 4x6 small wood box trailer that does not have its own brakes.. way too old… steel frame wood sides. It sounds silmilar to the issue the ascent has. My concern is obviously safety first and second cost to replace every 20-30k miles adds $1200 to $1800 and it should not be that way. Ever car prior to this has gone at least 120k before needing any brake replacement parts. Is it the ceramic pads leaving material on the rotors, not rotor warp? Is it improper tightening of parts per specs? Is it hub warp? Lugs overtightened? And how can I and many others (google it) avoid this safety issue and the costs??
We had driven up Mt Washington in NH (about 6000ft high) and were returning back. We had used the X mode (hill assist) intermittently on the way down. Had driven almost 150 miles back to home, when the car suddenly lost power and started to shudder. We were able to coast to the side. We tried to start again and again the same problem. We noticed that the brakes seemed quite warm. After about 5 minutes we tried again and were able to drive slowly to a gas station, but no one to help since it was late. Since fuel was low at 1 bar (60 miles distance to empty). We filled up the tank and made our way home driving slowly on the back roads. We are not sure if it could be a problem with the fuel, electrical system, brakes or the hill assist. While the car seems to run fine on short trips of a few miles, have not taken it out on any longer drives.
The contact owns a 2015 Subaru Forester. The contact stated while driving 40 MPH, she noticed an abnormal noise coming from the passenger’s side wheel while the vehicle was shuddering. There were no warning lights illuminated. The vehicle was taken to the dealer and diagnosed with a front lower control arm failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 61,000.
The contact owns a 2017 Subaru Forester. The contact stated while driving over 60 MPH, the vehicle would shudder and produce a loud noise coming from the engine compartment. The vehicle was taken to a local dealer where it was diagnosed and determined that the lower control arm bushing and transmission pan needed to be replaced. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 70,000.
When operating the vehicle at low and high speeds, the EyeSight system intermittently turns off with a "check owner's manual" message and the system remains off until at least the next vehicle restart. Additionally, after the EyeSight system disengages, when making turns at low speeds (turning corners), the steering shudders (quick violent turns to the left and right), the EyeSight warning light disappears and then re-appears after the vehicle turn is completed. At the same time the vehicle steering shudders, some portion of the internal electrical system appears to be reset (any radio / music system turns off temporarily, and the user-selected display in the main instrument panel resets to its default setting. This puts the vehicle occupant(s) at risk as it introduces an unsafe driving condition due to the vehicle shudder, which may result in a driver panic-reacting, or the vehicle failing to remain in the intended lane.
The vehicle gets a shudder at different speeds and it feels like it's either the transmission is slipping or its coming from the motor but it NEVER THROWS a Trouble Code so as the dealership says if its not throwing a trouble code they can't diagnose it until it does. So that's why I don't like these vehicles because no one know how to fix it old school by being a real mechanic and going old school to find the issue.
Related recalls
Power train: automatic transmission: park/neutral start interlock switch
- What is wrong
- Subaru of America, Inc. is recalling certain model year 2021 Crosstrek, 2022 Forester, 2021-2023 Legacy, and Outback vehicles. An insufficient weld may allow water to enter the inhibitor switch, causing it to fail.
- Risk
- An inoperative inhibitor switch may prevent the reverse lights from illuminating and the rearview camera image from displaying, increasing the risk of a crash.
- Remedy
- Dealers will replace the inhibitor switch, free of charge. Owner notification letters were mailed January 8, 2024. Owners may contact Subaru customer service at 1‑800‑782‑2783. Subaru's number for this recall is WRQ-23.
Recall number 23V755000 · Recall details
Power train: driveline: driveshaft
- What is wrong
- Subaru of America, Inc. (Subaru) is recalling certain 2024 Crosstrek, Impreza, 2023-2024 Forester, and 2023 WRX vehicles. The front driveshaft assemblies' outer race may develop cracks and break.
- Risk
- A broken driveshaft can cause a loss of drive power while driving or vehicle rollaway when the vehicle is in park without the parking brake engaged. Either of these scenarios can increase the risk of a crash.
- Remedy
- Dealers will inspect and replace the left and right front driveshafts as necessary, free of charge. Owner notification letters were mailed January 8, 2024. Owners may contact Subaru's customer service at 1‑844‑373‑6614. Subaru's number for this recall is WRP-23.
Recall number 23V754000 · Recall details
Power train: automatic transmission
- What is wrong
- Certain sport utility and passenger vehicles equipped with automatic transmissions were produced with an improperly manufactured transmission parking rod. When the transmission selector lever is placed in the "p" (park) position, the transmission park mechanism, that is intended to hold your vehicle, may not engage.
- Risk
- The vehicle could then move/roll without prior warning, increasing the risk of a crash.
- Remedy
- Dealers will replace the automatic transmission parking rod assembly. Owner notification january 8, 2003. An interim owner notification will be sent during november 2002. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact subaru at 1‑800‑782‑2783.
Recall number 02V282000 · Recall details
Questions about the Subaru Forester shudder
Which Subaru Forester years have shudder or vibration when accelerating problems?
The model years with the most reports are 2015 (9 complaints), 2001 (7 complaints) and 2017 (3 complaints).
How much does it cost to fix shudder or vibration when accelerating on the Subaru Forester?
Owners who mentioned a price put the repair at about $1,800 (median of 5 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
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