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Discussion Starter #1
Hello, first post!

I bought a heavily water-damaged crosstrek and I'm in the process of rehabilitating it. One of the things that took a soaking is the module under the radio in the console. I believe that this is the ECU. Am I right?


If I replace this module, what else would I need to reprogram? If I get this module from a jumk car, what else would I need to get to "pair up" with it?

Thanks!
 

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good luck.. most ppl RUN RUN RUN away from any water damage due to the possibility/probability of corrosion down the road..

just curious.. was it fresh water or salt water?

brian
 

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Discussion Starter #3 (Edited)
Brian,

most ppl RUN RUN RUN away from any water damage
You'll have to forgive me, but I'm not "that guy".

This is a project, I already have a twin to it that had very minor flood damage, but works perfectly after a VERY thorough cleaning.

The idea of this tear down, clean, and rebuild is to fix and learn, so I need an answer to my original question to proceed. I will keep the forum updated on progress and updated on any revelations that I encounter.

Here's a few "before" pictures for you all to gasp at.
 

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'18 and '19 Crosstrek Limiteds
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Wow, is that mud on the headliner? Was it completely submerged?

What's the long term plan with it? I assume it has a salvage title now.
 

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WOW! Quite a project! You are probably aware that you are gonna have to clean EVERY electrical connection/switch/component and change ALL fluids. From what I can gather you sound like you're ready to hit the dirt running! Good luck and YES please keep us posted.

:eek:ccasion14:
 

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Looks like you will spend more money to get it back in service, than buying a good used one of that model and year. Plus when you are all done, the resale value will be less than what you put into it. Seems like a very expensive learning project....
 

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Since no one has answered your initial question yet, I will at least acknowledge it. I really don't know for certain that it is the ECU, but I've seen more than one vehicle with the ECU in that general location. My best bit of advice for you is to invest in a good repair manual(from Subaru). They can be worth their weight in gold...especially for a project like this.
I admire your ambition for attempting such a project. It is much more than I would ever tackle, but everyone has their own individual "bucket list".
 

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Discussion Starter #9
My long-term goal is to;

1) Get it running and road-worthy.

2) Clean, clean, clean.

3) have it be my "daily driver". (pretty optimistic, I know)

I have a lift and lots of time, a pressure washer, and the Service Manual (just downloaded it).
 

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Discussion Starter #11
WOW! Quite a project! You are probably aware that you are gonna have to clean EVERY electrical connection/switch/component and change ALL fluids. From what I can gather you sound like you're ready to hit the dirt running! Good luck and YES please keep us posted.

:eek:ccasion14:
Yes, I am aware of the scope. I'm going to be quite the Crosstrek expert when I am, hopefully, done in a few months. Small projects give small victories, BIG projects yield BIG victories, right?

I have already emptied about 3 gallons of water out of the engine, which freed up my hydro-lock problem.
 

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Discussion Starter #13
Looks like you will spend more money to get it back in service, than buying a good used one of that model and year. Plus when you are all done, the resale value will be less than what you put into it. Seems like a very expensive learning project....
Probably not. I bought the flooded car VERY inexpensively (IMO). A "Good" one of that year is $14K-$17K. I can't see getting anywhere close to that amount, even if I bought a major accident victim to donor engine, modules, wiring harness, etc. for this one, that would only add a couple thousand max.

Should I keep a running total on here? Would anyone be interested?
 

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Discussion Starter #14 (Edited)
The module under the radio, on the hump, with the massive yellow plug (first clue), is the airbag module.

The ECU is under the hood on the passenger side and the immobilizer module is right at the toe level above the brake petal. Just passing along some information that I picked up today at my favorite dealership.

Also, I got the answer to my own original question. To change modules without doing any programming, I would have to change the ECU, Immobilizer, and Instrument cluster.
 

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Do you have a specialist shop around you? I just got a loaner from the specialist here, and it's a 2017 Impreza sitting on a lifted 2018 Crosstrek driveline. A good specialist shop would be invaluable.
 

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What do you mean by a "specialist shop"?
A specialist shop is typically a 3rd party garage that specializes in a particular make of car where that make of car's enthusiast typically hangout and get work done. With Subarus, they typically have a lot of WRX/STI owners hanging out there.
 

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A specialist shop is typically a 3rd party garage that specializes in a particular make of car where that make of car's enthusiast typically hangout and get work done. With Subarus, they typically have a lot of WRX/STI owners hanging out there.
This.
The one I took my Forester to is made up of Subaru master mechanics who started their own place. They also built the WRXs for Baby Driver. If there's anything you want to know about a Subaru, they know it. If there's a part you need, they have it or can get it.
 

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Discussion Starter #20 (Edited)
If there's anything you want to know about a Subaru, they know it. If there's a part you need, they have it or can get it.
That would be great, but in the middle of Indiana, we sadly don't have such things.

But we have corn! 🌽 <---That's supposed to be an ear of corn
 
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