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2017 Forester Limited
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Discussion Starter #1 (Edited)
Here's my experience with my 2017 Forester with 14.5k miles. I had my TPMS module replaced under warranty at the dealership back in July of this year, my key fobs worked fine at the time, it's just that the light would never turn off despite the tires having plenty of air.

A couple days ago my key fob stopped working so I replaced the battery and it still didn't work and neither did my second key. The TPMS light turned back on as well but I figured the pressure was low since it had been a few months since I last filled them up and it's been really cold lately. So last night I checked and all 4 tires are 32 psi yet the light is still on. Today I noticed that I cannot control the passenger side window from the driver side but the switch on the actual passenger side door is working (electrical issue opposed to the switch?). I don't know if it's all related or not but I'm bringing it back in on Friday for diagnostics. I'll update this post with the results then.

I don't mind using the key to manually open the door but it sets the car alarm off every time until I put the key in the ignition, what am I doing wrong here or is this part of the electrical issue that's going on?
 

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2017 Forester XT Touring
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133 Posts
@sharkfin It's the same module. I had my TPMS module replaced and the dealer asked for both of my key fobs to have them reprogrammed properly as the same module controls both systems. The service advisor didn't know until the technician told him. I had to bring my second key fob to them. Go back to your dealer! The problem I had was a flashing TPMS light in hot weather upon first starting the car or after it idled for a few minutes. Replacing the module solved the problem.
 

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2017 Forester Limited
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Discussion Starter #3
Weird, my key fobs worked when the first module went out back in July and they didn't do anything with them but I will bring both on Friday when I go in. I forgot to mention that my TPMS light flashed too when starting then stayed on.
 

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2017 Forester XT Touring
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Weird, my key fobs worked when the first module went out back in July and they didn't do anything with them but I will bring both on Friday when I go in. I forgot to mention that my TPMS light flashed too when starting then stayed on.
In my case it took several visits as they could never get the TPMS light to start blinking. No codes get stored if the light isn't blinking. Finally we got it to happen, the service advisor plugged in a scanner and the code was visible that the module was bad (it was something like "speed abnormal").
 

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2017 Forester Limited
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Discussion Starter #6
OK, I took the car in this morning and noted the following as there's a few more symptoms since my initial post:

1. TPMS light always on, it's not blinking like it did back in July when it went out the first time.
2. Neither key fobs are working.
3. Back lift gate is not opening whether from the button in the front driver's area or the actual button on the back of the car. No lights, beeps or anything.
4. The car alarm goes off when unlocking the door and opening manually since the key fobs are out.
5. The digital MPH gauge box that's on the drivers screen is out, the buttons to the bottom left of the steering wheel do not turn it on as usual.
6. Cannot control the passenger side window from the driver side but the switch on the actual passenger side door is working.

The service guy said #6 happens when the battery is disconnected and to reset the window you have to press and hold down the window switch on the passenger side door and continue to hold for 5-10 seconds after it was all the way down, then hold up and continue to hold for 5-10 seconds after it's already up. It should make a clicking sound.

Anyway, they diagnosed it as a bad TPMS module again on the spot and gave me a loaner Outback for the weekend since they won't get another one in until Monday. I'm not holding my breath though because they spent more time trying to upsell me an oil change, tire rotation, throttle body service and an "ethanol treatment service". I lol'd and said I changed my oil/rotated tires myself less than 2 months ago and I always update the date/mileage in the maintenance screen which they obviously didn't check. Also the car has less than 15k miles on it and I often fill it at an ethanol-free gas station so just fix the core issue since it's under warranty. I told them to please put a note in the system to not upsell me on any more BS especially when you haven't even brought it in the back and inspected it yet.

Anyway, I'll update the post again on Monday when they put in the new module. The last one lasted 6 months so we'll see what this new ones does...
 

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2017 Forester Limited
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Discussion Starter #7
Update: What was supposed to be a 20 minute job done the same day, I finally got my car back today after 5 days. I had fun driving the 19' Outback loaner vehicle but glad to have the Forester back. I won't go in to too many details and I really should file a claim with SOA with the amount of BS I went through with the dealership (one guy would call and lie to me, then an hour later a different guy would call and tell me the complete opposite lie not realizing the guy sitting next time had called me an hour early trying to BS me about something else). Oh, and I was told it was done on Monday so I went to pick it up and NOPE, "sorry for the confusion" so I went back Tuesday when they said it was done and the guy said, "2 more hours" so 2 hours later they said "it'll be done tomorrow". Finally when I went this morning it actually was ready but they also replaced the engine air filter for some reason and wanted to charge me $47 even though I told them multiple times to ONLY do the warranty work related to the TPMS issue so I rejected that.

Anyway, they had to replace the TPMS module (again so this is my third one) as well as the Keyless Module and also had to do firmware updates on the infotainment system as well as the instrument cluster (I didn't know the cluster even had software updates?). So everything is working (for now). Last time, back in July, they ONLY replaced the TPMS module and not the keyless board so maybe it was the culprit this time?
 

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2017 Forester XT Touring CVT
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236 Posts
Sounds like a possible ground issue, or ECU. i agree with the comments made above.

FYI they might have already changed the ECU because you mentioned that they had to update the instrument cluster. if they did replace the ECU then the dealer had to take the odometer reading from your previous ecu and then program it in to the new one. this is what tuners do to turn back their mileage, subaru just did it legally with out turning back your mileage.

or maybe for some extra cash they would lol.JK

all seriousness this is a big problem and odometers are being turned back alot. odometer readings is what we all use to help asses value of a vehicle, so to turn back an odometer is not just fraud but theft. Kbb would tell you that one car with less miles, is worth more, then the same with less miles.

i wish that your dealer is as detailed as mine with their repair order writing.

I think you should go back this week and speak with the service manager and get a very detailed account of what they did and write it down on the repair order they gave you when you accepted the car back. its your car and there should be no voodoo. you should be fully aware of what they do to your property. you never know what may come down the road and an educated consumer is always going to do better.


since they "updated" the cluster and possibly replaced the ecu they have to carefully and methodically document everything, so that they would not be accused of rolling back odometers. this entire area we are talking about, is high regulated and controlled by state laws and then more stringently by Subaru corporate policy.

OK, I took the car in this morning and noted the following as there's a few more symptoms since my initial post:

1. TPMS light always on, it's not blinking like it did back in July when it went out the first time.
2. Neither key fobs are working.
3. Back lift gate is not opening whether from the button in the front driver's area or the actual button on the back of the car. No lights, beeps or anything.
4. The car alarm goes off when unlocking the door and opening manually since the key fobs are out.
5. The digital MPH gauge box that's on the drivers screen is out, the buttons to the bottom left of the steering wheel do not turn it on as usual.
6. Cannot control the passenger side window from the driver side but the switch on the actual passenger side door is working.

The service guy said #6 happens when the battery is disconnected and to reset the window you have to press and hold down the window switch on the passenger side door and continue to hold for 5-10 seconds after it was all the way down, then hold up and continue to hold for 5-10 seconds after it's already up. It should make a clicking sound.

Anyway, they diagnosed it as a bad TPMS module again on the spot and gave me a loaner Outback for the weekend since they won't get another one in until Monday. I'm not holding my breath though because they spent more time trying to upsell me an oil change, tire rotation, throttle body service and an "ethanol treatment service". I lol'd and said I changed my oil/rotated tires myself less than 2 months ago and I always update the date/mileage in the maintenance screen which they obviously didn't check. Also the car has less than 15k miles on it and I often fill it at an ethanol-free gas station so just fix the core issue since it's under warranty. I told them to please put a note in the system to not upsell me on any more BS especially when you haven't even brought it in the back and inspected it yet.

Anyway, I'll update the post again on Monday when they put in the new module. The last one lasted 6 months so we'll see what this new ones does...
I just read this. you have a faulty Body Control Module. it links all these things together. BTW they sometimes fail after a dead battery or a battery with charge but it cant start the car.

Update: What was supposed to be a 20 minute job done the same day, I finally got my car back today after 5 days. I had fun driving the 19' Outback loaner vehicle but glad to have the Forester back. I won't go in to too many details and I really should file a claim with SOA with the amount of BS I went through with the dealership (one guy would call and lie to me, then an hour later a different guy would call and tell me the complete opposite lie not realizing the guy sitting next time had called me an hour early trying to BS me about something else). Oh, and I was told it was done on Monday so I went to pick it up and NOPE, "sorry for the confusion" so I went back Tuesday when they said it was done and the guy said, "2 more hours" so 2 hours later they said "it'll be done tomorrow". Finally when I went this morning it actually was ready but they also replaced the engine air filter for some reason and wanted to charge me $47 even though I told them multiple times to ONLY do the warranty work related to the TPMS issue so I rejected that.

Anyway, they had to replace the TPMS module (again so this is my third one) as well as the Keyless Module and also had to do firmware updates on the infotainment system as well as the instrument cluster (I didn't know the cluster even had software updates?). So everything is working (for now). Last time, back in July, they ONLY replaced the TPMS module and not the keyless board so maybe it was the culprit this time?
FYI they up-sale you because they make very little on warranty work. all those other services is where the dealer and the tech make real money. just think of it as going to new york city and being frustrated, every time your there, that some guy on the street asks you for money. its just the way things are, just politely say no and keep moving forward.
 

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2017 Forester Limited
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Discussion Starter #9 (Edited)
I think you should go back this week and speak with the service manager and get a very detailed account of what they did and write it down on the repair order they gave you when you accepted the car back. its your car and there should be no voodoo. you should be fully aware of what they do to your property. you never know what may come down the road and an educated consumer is always going to do better.

I just read this. you have a faulty Body Control Module. it links all these things together. BTW they sometimes fail after a dead battery or a battery with charge but it cant start the car.
I agree 100%, I am all about consumer knowledge and will post any additional information here. If it wasn't for these Subaru forums, I wouldn't have been able to negotiate the deals that I did or be able to work on certain things myself. I'm actually going back this week because the GM wants to talk to me as they're scared that I'm going to file a complaint with SOA (which I did back in 2016 when they trashed my wife's car... another long story) for everything that happened over the past 5 days which I've tried to keep as short as possible since this thread is more about the technical issue. See below.

FYI they up-sale you because they make very little on warranty work. all those other services is where the dealer and the tech make real money. just think of it as going to new york city and being frustrated, every time your there, that some guy on the street asks you for money. its just the way things are, just politely say no and keep moving forward.
The issue is that 10 minutes after I dropped the car off all they did was read the mileage then tried to throw everything at me they could up-sell unnecessarily. I simply explained that I changed the oil, filter, rotate tires, replace cabin/engine air filters, etc myself and that I keep a spreadsheet of everything I do with date/mileage/description as I work on my wife's '16 Outback and my 17' Forester in sync (or at least try to). When I refused all of the out of pocket services that should have been acknowledged on Friday which he did say "OK, no problem". However what they did was change the oil and rotated tires anyway (which I just did 2 months ago so now I have to rotate them again to keep them on MY mileage schedule) and said they did it for free since I bought my Forester from them and that they SHOULD have given me 3 free oil changes which the Sales person forgot to enter in to the system when I first purchased it. OK, fine, whatever but they also changed the engine air filter and billed me $47 just for that when I was signing the warranty paperwork for the module replacements. They ignored my request and did something they were not authorized to do and then charged me. That is NOT proper business practice regardless.
 

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This thread is an excellent demonstration of why I bought an extended warranty. Can you imagine the cost of repairing the electronics in these cars out of your own pocket.
 

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Discussion Starter #11
Reading through the paperwork now and it's nothing what the service adviser explained. It's like he made up an entirely different story. Basically what they did was replace the Keyless Module Unit and update the Radio/Infotainment "per bulletin" which it says controls all instrument clusters. Sounds like a known issue if a service bulletin was sent out to update all radios? So they did NOT replace the TPMS module which they definitely did back in July looking at that paperwork.
 

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Sorry to bump two different threads, but I feel this one may be more relevant. I'm fairly confident that the TPMS module has gone bad on our '14 FXT w/ 70,100 miles. TMPS error message on the info screen and both key fobs quit working.

It seems there are various part numbers for the module. I'm not sure if they are all interchangeable, but I've seen the following module PN for our 2014 xt: 28201SG010. I'm planning to order one for about $100 and install it.

My question is, what is involved with reprogramming the module? Is programming only related to the key fobs, and not the TPMS? Would an independent subaru shop be able to do it?

Thanks,
Garrett
 

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2015 2.5i Premium CVT
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My question is, what is involved with reprogramming the module? Is programming only related to the key fobs, and not the TPMS? Would an independent subaru shop be able to do it?
I have the same issue and was told it has to go through the dealer as the programming is "closed-source software". Additionally, they did not want to program a module from another source.


Of course it was a dealer that told me that...
 

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@Firetrux Thanks for the info. I'll check with my local independent shop before ordering. I haven't been able to find a dealer cost for this repair since most have been under warranty. I'm curious what they would charge.
 

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@Garrett looking at this post, in another thread, these can get wet & fail! :icon_eek:

Bobby...

['07 FSXT MODding Journal] ['03 X MODding Journal]
Thanks. I'm not sure what year that was for, but I'm assuming 2013 or early based on the location of the module being in front of the spare tire. I believe 2014 and later has the module mount behind the passenger corner plastic panel. I'll check for moisture in both areas.

I was told $265, but have yet to do it. I just have the obnoxious dash light for now.
Firetrux, do your key fobs still work? I don't mind the TPMS message, but the lack of push button lock/unlock is annoying.
 

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Firetrux, do your key fobs still work? I don't mind the TPMS message, but the lack of push button lock/unlock is annoying.
I don’t have any other issues besides the dash light (flashes first, then solid). The dealer did say if I did it, I had to bring all of my keys with me for reprogramming.

I saw your $100 part, sounds right as they quoted me part plus two hours to replace and reprogram.
 

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Not sure this is the same thing, but it is the same symptoms. I replaced the spark plugs on my 2015 Forester. I had to remove the battery to get at them. After replacing all 4 spark plugs I hooked up the battery and I had a TPMS error. Never had that error before and all my tires were fine. About a day later my FOB didn't work anymore. Neither did my other FOB with a battery that had never been used. I read this Forum a couple times, but decided none of this could be a coincidence with a bad module or a wet module. It happened right after I unhooked my battery and replaced my spark plugs. I unhooked my battery again for about 1/2 hour to see if it fixed anything without success. I brought it to a local tire place and had them use a scan tool to try and re-train the TPMS. No success. I went to a very good mechanic and told him about the issue (I live 70 miles from the nearest dealer) and he said he would look at it and try his more advanced scan tool next week, so I made an appointment. I then drove home and just for the heck of it unhooked my battery and left it unhooked for 24 hours. When I hooked it up again the TPMS error was gone and my FOB worked. It had not worked in 2 weeks. I think you have to leave it off long enough that you need to reset you date and time or it doesn't clear. It worked for me. Give it a try. Maybe I just accidentally re-seated a cable or something.
 

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2018 Forester XT Touring CVT
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Thanks. I'm not sure what year that was for, but I'm assuming 2013 or early based on the location of the module being in front of the spare tire. I believe 2014 and later has the module mount behind the passenger corner plastic panel. I'll check for moisture in both areas.


Firetrux, do your key fobs still work? I don't mind the TPMS message, but the lack of push button lock/unlock is annoying.
I had my module fried from water damage in my 14 XT. Water got in during heavy rain through the gasket that goes from the rear hatch to the body and ran down wiring to the control module, which was located in the rear quarter panel. The leak was my fault probably for not re-installing the gasket properly when I did an rear hatch LED mod.

Luckily I was able to source a used module from a salvaged vehicle online for like $60, replaced it myself, but the dealer still had to program it to the car and charged me like $150. They wanted to charge me more, but i complained that it seemed steep considering there wasn't much labor involved.

Interestingly enough I noticed that they changed the location of the module in my 18XT from the quarter panel to an elevated area between the spare tire and rear seat back on the passenger side. Seems it was probably enough of a reoccuring issue for them to decide to relocate it.

Might be worth a try to contact SOA and use that info as amo for reimbursement.
 
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