ammcinnis

Given recent production/sales numbers, it seemed inevitable. R.I.P. Legacy. https://media.subaru.com/pressrelease/2165/1/subaru-announces-legacy-production-end-2025 2025_Legacy_Discontinuation_Release_-FINAL.pdf

There is an entire chapter of the FSM devoted to Power Seat Memory (PSM) diagnositcs. (See attachment.) Some PSM faults will set a DTC, but it's not clear whether or not a basic scan tool can access them if set. One possible fault is low battery voltage, so that would be something simple to eliminate before going any further. Next, I would replace the fob battery with new, just to be sure, to eliminate that as a possibility. 6.19-PSMdiag-Power_Seat_Memory_Diagnostics.pdf

NOT TRUE ... as long as all four tires are identical (same brand, model, and size) and the measured circumference of all four tires is within 1/4 inch (or measured tread depth within 1.3/32 inch). It should go without saying not to mix summer and winter tires (i.e. on the same car at the same time); it has to be one or the other. FWIW, both 225/50R18 and 225/55R17 were OE tire sizes for MY 2015-2019 Legacys, depending on vehicle trim level. The 17 and 18 inch OE wheels and tires are interchangeable, as long as all four match. If in doubt, consult the Owners Manual.

Refer to page 3 of the TSB I posted a link to.

I think that's not a good assumption. Similar? Maybe. "The same"? Probably not. (I'm not about to go out chasing part numbers for you to compare.) You can replace the "tension spring" that's at the heart of the problem yourself for less than $100 ... including the cost of the special tool required. Or you could pay a good independent shop (or even the dealer) for an hour of labor to replace it for you. That's what I would do ... but it's your car, your choice.

If you read the TSB, this specific problem is limited to Legacy, Outback, and WRX. I agree that the rattle can be annoying when driving over irregular road surfaces. A reminder: Subaru doesn't design or manufacture the Outback's steering rack. They source it from KYB.

See: Subaru TSB 04-17-17R 08/20/19 It is important to note that Subaru states "the condition is NOT detrimental to the operation of the [Electric Power Steering] system" ... i.e. it is safe to drive. FWIW, my 2016 Outback has developed the steering rattle, while my 2015 Legacy has not. YMMV.

I think that's correct. You could open it up to be sure. Also, the FSM has diagrams showing the physical layout of the car's wiring harnesses, including the approximate location of grounding blocks. Nope. He said it's on the driver's side, near the battery.

Bingo! FWIW, the installation instructions for my Chamberlain garage door opener specifically caution NOT to use an LED bulb, for just the reason you experienced. Apparently, the driver circuitry in some LED lamps generate lots of electrical noise at radio frequencies ... and the bulbs in most garage door openers are within inches of the receiving antennas.

You can download a legal copy of the Factory Service Manual, which contains detailed and complete wiring schematics, and a whole lot more directly from the Subaru Technical Information System (STIS) web site: https://techinfo.subaru.com. The last time I checked, cost was still only $35 for 72 hours full download access.

"Half a block away" is an unrealistic expectation for Homelink; it's not designed to work at those distances. Most likely, something has recently been installed by one of your neighbors that is a source of (permissible) electrical interference in the shared, and often crowded, frequency band assigned to Homelink. Be happy that your garage door opener works reliably from the driveway.

Do you see "timing chain" mentioned anywhere in the Subaru Schedule of Inspection and Maintenance Services for your 2015 Legacy? Your answer is there. You can also consult the 2015 Legacy/Outback Factory Service Manual for additional information.

My 2015 Legacy and 2016 Outback "never had one," either. (That seems a strange way of saying that.) As others have already posted, I don't believe any MY 2015-2019 Legacys and Outbacks had the blue light; the factory installed real coolant temperature gauges instead.

As stated previously in this thread, the following three BCI battery sizes are suitable "drop-in" replacements for the OEM battery in 2015-2019 Legacys (and Outbacks): Group 25 ... OE equivalent Group 34 (NOT 34R) ... higher capacity than Group 25 Group 24 (NOT 24F) ... higher capacity than Group 25

In that case, the next step is to use a scan tool to check for Diagnostic Trouble Codes (DTCs). According to the Subaru Factory Service Manual, there are more that 120 different DTCs unique to the airbag system. Checking the DTCs should allow you to significantly narrow your diagnostic search. Since the airbags are part of a critical safety system, perhaps this diagnosis and repair is best left to a (competent) Subaru dealer.

Which "air bag indicator light"? If you mean the indicator in the overhead console, that may be normal operation. The passenger-side front airbag is enabled only when sensors detect substantial weight in the right front seat, and the light in the overhead console reflects its status. The purpose of this arrangement is to disable the airbag whenever: 1) the seat is unoccupied, or 2) the seat is occupied by a small child who might be injured by its deployment. Unfortunately, placing even moderately heavy articles in the right seat can also enable the airbag. See your Owners Manual, Chapter 1, for more information.

Thoughts? That yours may be a case of unrealistic expectations. Premature wear of a Subaru axle shaft is neither "normal" nor "common," but it does happen occasionally. It may or may not be related to the service history of your particular vehicle. That said, I would probably seek a second opinion from a competent independent shop, preferably a Subaru specialist, before having an axle shaft replaced. FWIW, Subaru does not design or manufacture their own steering racks. That is a KYB OEM product.

Quoted for truth. Another option is to replace the rear shocks and/or install new rear springs, both of which may contribute to rear sag as they age.

Reality check: Please edit the thread title.

Thanks for following up. I'm glad to see you finally solved the problem.

Impressive.

The published drag coefficient (Cd) of the Gen 6 Legacy is 0.29, which is pretty respectable. Not so long ago, that was racecar territory. In fact, the published Cd for my 1969 Porsche 911S was 0.29, and it was considered remarkably low at the time. Of course, the Gen 6 Legacy has a substantially larger frontal area than the early 911s.

It may or may not "do any good," but a pulse-type charger should ONLY be used with the battery disconnected from the car's electrical system. The narrow, high-voltage pulses intended to de-sulfate the battery can damage the many electronic modules used throughout modern vehicles ... including our Subarus. Subaru of America has even posted memos to this effect in their dealer tech publications.

See the attached excerpt from the 2015 Legacy/Outback FSM. It is important to match the transmission code, perhaps even more than matching the VIN. It would also be worthwhile to verify the code on your current transmission vs. the transmission code specified on the vehicle's model number label. That's because the front differential was integrated into the CVT housing, and 2.5 Legacy and 2.5 Outback had different final drive ratios. You don't want to get this wrong! Per the http://parts.subaru.com web site: 31000AJ570 => 2015-2017 Legacy (3.900 FDR) 31000AJ610 => 2015-2017 Outback (4.111 FDR) 1.05-ID-Identification.pdf

Maybe; maybe not. Some Legacy/Outback owners have reported the same results as you, but others have reported that they needed a small shim to fully secure their Group 34 battery. I wouldn't "worry" about it, but using a manufacturer-supplied battery spacer removes any doubt. What you do not want is for your battery to be loose enough to rattle around in its mount. Your car, your choice.