Differential Unit Problems of Subaru Legacy

Subaru Legacy owners have reported 6 problems related to differential unit (under the power train category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Subaru Legacy based on all problems reported for the Legacy.

1 Differential Unit problem of the 2016 Subaru Legacy

Failure Date: 12/28/2018

Cvt transmission is failing after the recommended service interval for fluid changes in the cvt, front differential and rear differential. Failure at 64,800 at freeway speeds on 12/28/2018. Had vehicle towed to Subaru dealership and they performed a cleaning of carbon build up and checked the fluid levels and reset everything. Subaru claimed the computer was erased because the car wouldn't start once and had been charged. Dealership declared everything was correct and roadworthy. Picked up car on 1/1/2019 and transmission failed again at freeway speeds after approximately 12 miles of driving, this is the second failure, 01/01/2019. Vehicle is being towed into Subaru dealership again on 1/2/2019. Transmission failing at 70 mph and causing a sudden decrease in speed is a major safety issue that could result in being hit from the rear or losing control of the vehicle.

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2 Differential Unit problem of the 2012 Subaru Legacy

Failure Date: 02/01/2018

Transmission shakes or rumbles between gears while accelerating. Occasionally car will completely lose power and stall. This started happening with mileage at about 97,000 in February of 2018. Subaru dealer in danbury, CT said it was a propeller shaft and rear differential problem. Then brought car to Subaru dealer in brewster, NY who recommended transmission replacement. Service bulletins online describe the exact problem happening on the Legacy 3. 6 transmission. Car now has 121,000 miles on it. Car functions, but vibration between gears continues. Also occasionally completely loses power momentarily - very dangerous. Dealers say blue book value of my car is less than cost of a replacement transmission. Contacted Subaru of America who offered me a $100 goodwill parts & service coupon.

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3 Differential Unit problem of the 1996 Subaru Legacy

Failure Date: 03/02/2012

The contact owns a 1996 Subaru Legacy. The contact stated that while driving 60 mph, there was a loud noise coming from the rear of the vehicle. The contact then noticed that there was smoke and flames coming from the rear end of the vehicle. The fire department was contacted and a fire report was filed. The vehicle was then towed to an authorized dealer where they inspected and advised that the differential failed due to the vehicle becoming overheated. The vehicle was not repaired. The VIN was not available. The failure and the current mileage was 255,000.

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4 Differential Unit problem of the 2000 Subaru Legacy

Failure Date: 11/01/2006

Summary the transmission failed with 45,926 miles. It was a catastrophic failure caused by a manufacturing defect in the differential assembly rack and pinion. The gears have microscopic cracks and the teeth broke off at 30-35 mph. The cracks are visible to the naked eye. The transmission shop that repaired the vehicle, said it was the second Subaru that had a similar failure. I have asked Subaru to review the case. Subaru indicated the failure was due to preventive maintenance issues not a product defect and refused to absorb any of the repair costs of $1695. I have the parts that failed and I will re-contact Subaru, request that a zone rep look at the failed components, and review the case again.

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5 Differential Unit problem of the 2002 Subaru Legacy

Failure Date: 05/12/2004

My Subaru Legacy 2002 was recalled for a transmission problem in 2003. This was repaired in Feb 2003 by the CA dealer where we purchased the car. In June of 2003 we were transferred by the us coast guard to virginia. On may 12, 2004 I noticed a strange wheel noise and took it to the Subaru dealer in the area for diagnosis and repair. I was told later that the brakes were only 50% worn and that all of the fluids were ok. I was told to pick up my car that night as everything was fine. The paper work given to me when I picked up the car stated " checked front and rear brakes; 50% left; heard some front differential noise; checked fluids; checked ok. " by may 20th the noise was extreme and I met with the mechanic the next morning. He instantly diagnosed the problem as the differential. I was told that a part would have to be ordered and I informed him that the car was under warranty. On may 24th I was informed that the cost of the repair would be approximately $3500 as a new transmission was needed and that the warranty would not cover unless I produce all of my service records. We authorized the work to be done as this car is our only transportation. My concern is that there is a serious problem with the Subaru transmission for the 2002 Legacy model. I have also heard of a woman who had recall transmission work done and then drove to new england. When she arrived at her destination her car had problems. What was uncovered was that the recall had been repaired with used parts and had failed! is this a common practice with Subaru? we have spoken with Subaru America at their 800 number and were told that they would not honor the warranty unless the service records showed that all services had been performed appropriately. We are in the process of locating these records but are very unhappy with Subaru's attitude regarding a car that is only two years old and is in need of a new transmission.

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6 Differential Unit problem of the 1998 Subaru Legacy

Failure Date: 01/11/2000

Comments from the dealers invoice: 671 miles: checked for oil leak, found fluid leaking from power steering rack. Removed and reinstalled rack assembly. 671 miles: I complained about smell in vents. Advised it was power steering fluid leaking onto exhaust. 944miles: oil leaking from engine down onto exhaust. Found leak at top of engine on the right side near rear oil galley plug. Disassemble engine complete down to short block. Replace short block and all necessary gaskets and seals. Reassemble engine. 944 miles: I complained about smell in vents. This time told it was burning oil getting into vents before engine repair. 6195 miles,03/27/complained about smell in vents. Dash assembly disassembled, cleaned, reassembled. 7173 miles: complained about smell in vents. Working with zexel rep. On a/c system located leak at evaporator cooling unit. Remove and replace receiver drier and a/c compressor. Reassemble. 8009 miles: I complained that the check engine light stayed on while driving. Told possible that fuel tank cap was not on tight. 10185miles 08/06/I complained check engine light still stays found rear 0-2 sensor to have slow response times. Remove and reinstall rear 0-2 sensor. 8485 miles complained of burning smell from under hood. Told inner axle boot leaking. Inner axle cv boot grease in front replaced. 29901miles: recall campaign wxq74 master cylinder. Perform wxq-74 and install label. 39150 miles: complained about rattling noise from rear axle. Checked rear differential, heard pinion bearing to be noisy. Replaced rear differential. Warranty expired. 45330 miles: my altenator failed. I was towed 15 miles to the dealership, at a cost of $140 dollars, and paid 294. 35 dollars to have it replaced. At the time I was informed that there was an open recall on both 1996 and 1997 altenators but nothing on the 1998's. Last week I got a letter from Subaru informing me that some 1998's may require altenator replacements.

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