2022 Toyota Sienna - Multiple Electrical Faults! What Happened??!

We have here a 2022 Toyota Sienna Hybrid; it has multiple electrical faults, the PCM was melted, and the tech said it also had the wrong BCM installed. Now the screen is blank, the door locks and windows don't work, and every light is on in the dash. There is no power to the OBD port so we start with that. Hope you enjoy!
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[@PineHollowAutoDiagnostics]

Holy crap that's a lot of blown fuses 😂 Reverse polarity jump start? Sabotage? How could a 2022 end up at an auction?? 🤔

[@advancedleveldiagnostics]

I'm leaning towards reverse polarity jump start because the 12v battery was dead and the PCM was burnt, which I've seen happen when you boost it from the PCM bracket. The line they say about the auction is "Not every car in the auction is messed up, but every messed up car goes to the auction" 😂

[@Averna222]

I work at a Toyota dealer and see this pretty regularly. This vehicle was 100% jump started backwards. It always pops the alternator fuse as well as a handful of others. As you found, it just needs the PITA alternator fuse and others replaced, and they usually fire right up with no other damage.

[@advancedleveldiagnostics]

I also think at least once it was boosted from the PCM bracket because the PCM was burnt.

[@atuhumuzakenneth8129]

More than 💯 %

[@kroffe]

Damn that’s good to know.

[@PaulOneel]

What is your opinion on, I think he said, this being a dealership and they couldn't diag it?

[@advancedleveldiagnostics]

@@PaulOneel sorry I misspoke, It was a used car lot not a dealership.

[@jefftovani5535]

Great content as usual!! You make it look so easy,but I know its not for the average joe!! Keep it up your channel is doing fantastic!!

[@advancedleveldiagnostics]

Thanks Jeff, I appreciate that!

[@8power0]

THIS IS WHY I DON'T MISS YOUR VIDEOS ,,,,,,,,, THANKS AND LOOKING FORWARD TO MORE IN THIS NEW YEAR !!!!

[@advancedleveldiagnostics]

I appreciate that!

[@discodancer6937]

Awesome videos man. Love how fast you move through the process with no wasted jibberish- straight to the point. Thanks for sharing all your knowledge.

[@advancedleveldiagnostics]

Thank you!

[@viplegaleducation1292]

Pretty cool feature being able to search that power distribution section for the obd2 fuse power

[@s.j.5850]

Whenever you have some free time (LOL) a video on schematic reading would be very helpful & appreciated by some of us out there. When I took the automotive course at a community college the electrical instructor never showed up so we all missed out.

[@richardchilds9344]

Keep the videos coming dude ❤

[@abderrahimmark]

Always nice to watch and learn from your video. I can only complain they are not long enough hehe

[@GregoryJones-px1hr]

Another hit from another legend! Thanks brother! Always great content here!

[@advancedleveldiagnostics]

Appreciate it!

[@emiliosegura6038]

As always, it's really interesting to watch your videos. I wish I knew that much of electrical work.

[@advancedleveldiagnostics]

Thanks for watching!

[@joesmo4749]

Crazy!

[@djosbun]

Crazy…….just crazy.

[@HouseCallAutoRepair]

LOL I love the channel and the content... why does everyone pronounce Toyota as TAYota? I didn't grow up with TAYS to play with...

[@advancedleveldiagnostics]

Lol I would blame it on NJ, but it might just be me.

[@learning-yf9yv]

You once walked me through replacing that alternator fuse😊. I told you It was a pain in the neck

[@advancedleveldiagnostics]

Lol I didn't think I would have to do it.

[@madmike214]

Nice! Wonder how that all happened... Jumped incorrectly? Lightning? Lol sometimes we never get the full stories lol

[@jackiemay9471]

i agree done a few

[@advancedleveldiagnostics]

Exactly!

[@PaulOneel]

Can you go over a lab scope for basic use? I just really need it for signals and confirming diag. Don't really need something as advance as Pico but would like an Amp clamp. Thanks!

[@dnlmachine4287]

A good channel is Mechanics Mindset, a British guy. Good information and presentation, lots of lab scope and basics. Stay gold.

[@manoramachandran9192]

❤❤❤❤❤

[@zoharhagbi6685]

❤

[@mikesabin8568]

No obd breakout box?

[@advancedleveldiagnostics]

I didn't see a need for a break out box because it was either missing a power or ground, since my VCI didn't light up.

[@user-yc7ci1lg3h]

I have a 2022 sienna, it suddenly starts draining the battery, had to boast the car about six times before going to a Toyota dealership, the did diagnosis and said kick sensor is the culprit, I don't have warranty left and they say it cost almost 6k to fix, and it hasn't been a year since I got the car😩😢😩 don't know what to do, cuz that's expensive!

[@BehindTheCounter_TFSO]

It sounds like someone was under that hood who shouldn't have been there. With today’s modern vehicles, even something as seemingly simple as jump-starting a vehicle can quickly turn into a costly mistake. This serves as a perfect example of what not to do. I once had a case study where a customer had a power steering leak and a well-meaning neighbor came over to help by filling up the power steering fluid. Unfortunately, they accidentally filled the brake reservoir instead. Long story short, the insurance company ended up totaling the vehicle. The moral of the story is simple: don't mess with something you don't understand. It's crucial to have a licensed independent garage inspect any issues to avoid costly mistakes and potential damage.

[@viplegaleducation1292]

What blows those alt fuses?

[@advancedleveldiagnostics]

I think from reverse polarity boosting.

[@arthurfricchione8119]

Thanks for sharing. I wonder what blew the fuses. I know you said auction vehicle they will I’m assuming blow again. Anyway thanks for sharing. 👍 Artie

[@advancedleveldiagnostics]

I don't think they will blow again, I think it was reverse boosted, and probably also boosted from the PCM bracket because it was burnt.

[@arthurfricchione8119]

@@advancedleveldiagnostics thank you very much for explaining that. Much appreciated 👍

[@davidj5937]

Why would something like this not be covered under warranty? Does the fact that it ended up at an auction have anything to do with that (why is a 2022 at an auction)?

[@advancedleveldiagnostics]

It had over 36,000 miles, I think that is the whole warranty. There was also clearly a burnt PCM I think they would void the warranty for that.

[@calholli]

Lightening strike? Or maybe someone welding on the car somewhere and had their ground in a bad spot and it sent power through the harness? Strange

[@advancedleveldiagnostics]

I think it was reverse boosted, especially since the 12V battery was dead when they got it. Also the PCM was burnt which I've seen happen from boosting from the PCM bracket, since the battery is in the trunk.

[@jasonash9121]

Remember when you're jumping: black to red and red to black.

[@mrblonde2013]

Nope. Do not go by colours. Rookie mistake.

[@jasonash9121]

@@mrblonde2013 Whooooooosh!