Just a couple of things: 1. It's 12v, you're not going to shock yourself touching it. It is better to touch the connectors when putting them back on the battery and wiggle they down all the way on the battery connectors to ensure maximum contact and a snug fit instead of avoiding touching the metal. The prongs are slightly tapered. 2. You don't need to cover the negative with a rag. The chassis of the car is connected to it after all so whenever you touch the bodywork, you're touching the negative haha. Thats also why they don't bother covering the negative terminal with a plastic cover, but the positive is covered. 3. The order of operations here are wrong, while im sure realistically no damage will occur, it is still best to follow the instructions to potentially avoid a bill if you break the DC-DC converter. The correct order: 1. Lower the rear right window 2. Lower the driver's window 3. Open the driver and rear right door and leave them open until finished 4. Pull up the seat 5. Go to the screen and open up the frunk 6. On the screen now power off the vehicle 7. Go to the frunk and disconnect the battery negative connector 8. Go to the rear and disconnect the DC-DC converter cable 9. Go to the front and disconnect the battery positive connector and remove the battery/vent hose 10. Place in the new battery and attach the vent hose 11. Connect the battery Positive and tighten 12. Go to the rear and connect the DC-DC plug back in 13. Go to the front and connect the battery negative and tighten 14. Secure the battery with the mounting hardware 15. Put the rear seat back together Finished

@techgeektesla

4 ай бұрын

Awesome!! Love it. Pinning this.

@Beakerzor

2 ай бұрын

@@techgeektesla I have an irational fear of being shocked, I will wrap my tools with tape, and use thick snug gloves

@mattriccardi4858

8 күн бұрын

What if I can’t roll down my drivers window fully?

Not touching the metal, while holding a ratchet that is touching the metal gave me a chuckle. Good video, this is in my future!

@techgeektesla

10 ай бұрын

😂

Great short video with everything explained well. It took me ~15 minutes to do the same on my Model 3. Thanks a lot!

Was it helpful? It was perfect. You are a great teacher/presenter. No extra nonsense, all usable instruction. Well done.

The seat latches go SIDEWAYS. I kept pulling up on them, pushing down, trying everything. I didn't realize they needed to be pushed towards the left side of the car, and the rear seat releases so easily!

Great tutorial, very specific and detailed... 🙂

And to reenergize the vehicle, press the brake pedal

I'd just let the Tesla Mobile guy do it for $30. He's done it 100 times.

negative on the 12V should be disconnected prior disconnecting the High Voltage not the opposite. Also service mode could be used and most important, wait that the heating is completely off, then power off using the screen then 12V off, High Voltage off. Replace the battery, then high voltage reconnect and last 12V reconnect. If it is a model 3 with heat pump the procedure is different. Always consult the official service manual

I picked up a new '24 Model Y a few weeks ago and was checking the service mode. Noticed that new Model Y's have a 16v lithium low voltage battery which is much smaller and lighter. Not sure about the replacement cost of these new batteries when they fail.

Just a little tip, it's better to disconnect the 12v negative cable first before removing the plug under the rear seat. When the 12v is the only thing powering the car, it can drain and then not close the HV contractors

@techgeektesla

10 ай бұрын

Pro tip right here! I wish I had researched the official procedure from Tesla’s documentation & video instead of learning from other KZreadrs’ videos first! I’m afraid I am only proliferating the wrong method with this one. While the sequence I performed isn’t necessarily “bad”, it definitely isn’t the best and it could cause problems, as you pointed out so perfectly. Thanks for this!

@generalmeyer315

9 күн бұрын

​@techgeektesla what if I did this and now I have no power and a closed front trunk? Please please help

@magnusauto7941

6 күн бұрын

@@generalmeyer315 Then you'll have to power via the front tow hook area.

@generalmeyer315

4 күн бұрын

@magnusauto7941 well when I plugged it back in it didn't come on right away which kinda freaked me out but after about 7 to 8mins everything turned back on thank god.

Noooooo! Don’t pull the latch out first! I’m a technician for Tesla and you don’t want to pull the latch first. You disconnect the battery so that there is no battery voltage going to any controllers and then you disconnect the logic connector. Think of the battery as a negative and the logic connector is a positive.

@techgeektesla

10 ай бұрын

Thanks for this info. I think I watched 3 other videos that showed this process in similar order. After your comment, I found the official Tesla video. Best to follow that one, I agree! Thanks for this. service.tesla.com/docs/Public/diy/model3/en_us/GUID-2588F809-41E3-43F1-84E5-6745C7C18DBE.html

@davn7723

7 ай бұрын

What about when you put it back? put the 12v first? or the latch?

@eduardoyepez7358

7 ай бұрын

@@davn7723 put the latch first then finish with the negative.

@cynthiaberniquez2859

6 ай бұрын

Quick question, if my car if fully dead and can’t disconnect the connector under the back seat… is it still safe to swap the battery?

@jacobheinz8236

5 ай бұрын

That’s why I never subscribed to this channel. The advice given contradict official Tesla Owners Manual - Self Servicing section. Shocking some people put in so much efforts to misdirect other people. Shame!

Thanks

Something I did not know until about a year ago, when replacing 12v batteries in vehicles, get the little kit with red and black felt washers and some terminal protectant spray and use those. Can prevent the terminals getting all funky and fuzzy.

@bemccune7671

2 ай бұрын

I'm not sure but I think it'll be less an issue with these as with the Prius since they're completely weather sealed and don't get the air, moisture, and heat cycles that gas vehicle batteries could get? But I live in California so maybe just not a concern here.

One thing I always do with a new battery is put it on a battery tender overnight to make sure it really is charged fully before installing.

@techgeektesla

10 ай бұрын

This is a great suggestion.

thanks!

Thanks for the helpful comments.

@techgeektesla

7 ай бұрын

I’m so glad the comments were helpful! Sorry I didn’t get it perfect. I really considered to redo this video using the instructions in the User Manual. 😆 That should be the #1 source. Although the method in this video isn’t *horrible*, per se, it’s safer/better to follow the right sequence.

Is this covered under battery warranty

GREAT VIDEO AND DETAIL INSTRUCTIONS

maybe it takes 10 minutes if you practice it several times. But it will not take you 10 the first time you do you. Author doesn't show there is a little clip on the high voltage cable you must squeeze to rotate the lever down. And I had to use a screw driver to pry it up. The little air vent fitting easily falls down into the car labyrinth below and then you need time to fish it out. Some pump would NEVER TURN OFF, even after powering the car down, until I boldly went ahead and disconnected the ground terminal as a final step and it finally stopped. It all seems to work ok now but like a typical car project you do once, budget 30 minutes I'd say.

Can you provide link or store where you bought it from?

@techgeektesla

10 ай бұрын

Need to buy from Tesla Service Center.

😮‍💨😮‍💨😮‍💨😮‍💨😮‍💨 first pop open your frunk, i did this step by step and when i got to the frunk part I couldn’t open it now

@generalmeyer315

9 күн бұрын

What did you do cause I just did the same thing, please help

How long until you needed to replace the 12v battery?

@johnsmithiii6472

Ай бұрын

I got almost 6 years out of mine which seems to be rare. I've heard of people having to replace after 2 years.

Do you void your Tesla warranty if you DIY the 12V battery ?

@techgeektesla

10 ай бұрын

The standard warranty covers the 12V battery replacement.

Didn’t work for me. Put new battery in and it still says need new one.

Where did you purchase the battery at? I need to replace mine as well.

@techgeektesla

10 ай бұрын

The video mentions where. Service center has them at best price.

@johnsmithiii6472

Ай бұрын

I ordered mine online, just Google. I got the lithium one which is much more expensive.

What indicators if any tell you that the 12V needs to be replaced?

@techgeektesla

7 ай бұрын

You’ll get a message on your screen telling you about it. 👍

@margotk3498

4 ай бұрын

When your car becomes a brick. First time I had zero warning. I assumed it was my 12V but roadside service said no, we see some codes that it's more,... so they towed me 100 miles to change a 12V battery. Sigh. Second time I got a warning my car needed service and wouldn't restart, and sure enough its a brick. I'm assuming it's the 12V battery again this time, but it could also be a bad motor.

How do you turn off the system on the screen, and roll down the windows if the battery is dead?

@techgeektesla

Күн бұрын

Battery won’t be dead. You’ll get a message indicating that it is about to die first.

How did you find out that you need to replace your 12V battery?

@MrDavidwesty

10 ай бұрын

My car gave me a warning message that the battery was getting weak.

@jjg4951

10 ай бұрын

@@MrDavidwesty Thanks. Most ICE vehicles do not have this feature.

@techgeektesla

10 ай бұрын

My car also gave me a notification.

I bought a "recommended" replacement battery because the Tesla dealer is about 100 miles away. My new battery does not have the vent tube shown on the video. Do I really need the vent hose? BTW, The old battery is 5 years old and working fine but other people say it should be replaced after 3 years.

@brianbeuning9279

Ай бұрын

My console told me it was time to replace the battery after 4 years. In old cars, battery has lots of air flow and hydrogen gas can dissipate safely. Tesla 12v battery enclosure has very little air flow. The hydrogen gas can build up and maybe explode. I expect the explode would be a pop and not a boom.

@johnsmithiii6472

Ай бұрын

mine was almost 6 when it failed.

Energy vampire

Tesla OEM 12V battery is not good, Costco Interstate 12V battery group 51R is better, cheaper, and drop right in. when you call costco they will tell you they don't have Tesla battery because they didn't have Tesla on their list, but trust me this one fit like a glove

@Mickitao

10 ай бұрын

How did you quantify this comparison?

@rickjudson7029

10 ай бұрын

Does this Interstate 51R fit all Teslas or just certain ones?

@dmillerp11

8 ай бұрын

Or Sam’s club Duracell 51R!

@andreas.2

5 ай бұрын

In germany the OEM battery is the best AND cheapest available. We only have the crappy Varta battery als alternative with 330 Amps CCA instead of 625 Amps of the original one. The thing is: The Varta does not even deliver 330 Amps, we measured laughable 240 Amps 😂 Which means, it has a high internal resistance which is bad for delivering enough power. So sad... They don't even take it back, gave me 20 € back and i now can throw it away.

you don't even feel the 12v volt, especially when you're off from the high voltage battery pack

How much did you pay for the battery

@techgeektesla

27 күн бұрын

It was somewhere around $85 if I remember correctly.

That battery was gettin' swol. 😂

Your video was put up 5 months ago, making it around mid 2023. It's now January 2024. Where did you get the battery for only +/- $85.? The Tesla Center near me lists the battery for $225.! ... (and it's back ordered) :(

@techgeektesla

5 ай бұрын

The part number is in the video. The price shouldn’t have changed that dramatically!

@tecnodog7

4 ай бұрын

I just created a Telsa service, and they quoted me $85 for the price of the battery. I'm not sure why they are charging you $225. With service installation and tax, it's coming out to be 117. There has to be some mistake on their part for you.

@euro9115

4 ай бұрын

@@tecnodog7 They're listed on the local Tesla service web site for $225., that doesn't include installation. I ended up disconnecting both the 12 volt and 300+ volt batteries and recharged the 12 volt battery for a couple of days. Everything is back to normal so I didn't have to buy a new battery.

@tecnodog7

4 ай бұрын

@@euro9115 that's so odd man. I went and purchased it the same day for $85 from the service center here in Dallas, TX

@johnsmithiii6472

Ай бұрын

I ordered the lithium one, cheapest was 463$!!!!

PSA: To anyone who wants to DIY anything, dont take advice from someone who is doing something for the first time. Especially if they can't be bothered following manufacturer specs or learning part names

@techgeektesla

23 күн бұрын

Correct. I failed to read the manual. 🥴 You got me. Also, I am not the manufacturer, just a random guy on KZread. Please be advised that I watched 6 videos on how to do it before I filmed the process in 10 minutes myself. I have a PINNED comment on this post with the proper instructions. Main thing to note is the sequence of removing the connection in the backseat. With all that said, my video has helped a lot of people with many sending their ‘thanks’ for the info. It was a pretty simple task to complete & totally worth the effort for DIY to save money.