Dead Tesla 12V Battery? - Avoid Getting Stranded With This $5 Fix!
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- เผยแพร่เมื่อ 3 ก.ย. 2021
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Don't let a dead 12V battery in your Tesla keep you locked out of your car. I have a cheap, simple solution for you.
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#Tesla #Battery
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Beautiful!!!!!!! Literally a life saver if it is cold outside!!
After getting a lot of feedback, I thought I would share some updates from what I have learned. It appears that the Tesla software won't let the frunk open unless the battery is either really dead OR you have your phone key with you and you wake up the screen - like when you open the door. Otherwise, the A23 battery will not work. This is good as it will prevent some random person from opening your car if you hide the batteries in the front. Thanks for all the great feedback!
Recommend deleting this video then replace it with updated information.
I was wondering about this… thanks again
If you are going to jump start it with 12V battery, why need a small battery to open the hook? just use the same jump start battery to open the hook. No?
@nzhong169 you can yes. The thought likely is that you would have a jumper pack in the frunk and use a 12v battery to gain access to it.
@@nzhong169 Hook? I assume you mean 'hood' but you said 'hook' twice.
Jim, this video is one of the many reasons why your channel is one of the best Tesla content channels. No time wasting 45 second intro, no overblown ego, just great tips and information. Thanks very much.
Wow. I appreciate that! Thanks for watching!
No time wasting 45 second? More like time wasted 2.5 minutes 🤣. I still appreciate the info but why not cut right to it
If you're going to get a jump start you don't need a battery at all. Just use the jumper leads of the battery that's going to jump start it. Also... the newer Tesla's have a 16v battery, not 12v. Jump starting will get you into your car but if that battery is dead it will need to be replaced.
Excellent tip Jim! Thank you. Waiting for my 23 Y expected late March. Just ordered the battery. Keep up the great work. Also ordered the tire repair kit you recommended.
This great video was clearly made for me. I got me the adaptors, I got me the pucks, I got me the tire repair kit, I got me the compressor, I got me lotsa other stuff too. Now I'll have a battery hidden in that little tow slot thingy. Thanks so much.
Excellent and vital video for Tesla owners! Thank you for creating this video!
After 9 months with my Tesla Y, I thought I knew everything about my baby, until I found your video! Informative and super helpful, heading to the store to buy that little battery to hide in that compartment in the bumper. Thank you!!
Glad it was helpful!
You don’t need this extra battery to open your frunk. If you are already going to jump your Tesla from another 12V source, you simply connect the jumper cables to those wire leads via jumper cables. That is the intended use, no additional battery needs to be stored on the vehicle
unless no other 12v is available.
So where IS your booster battery and jumper cables? In the Frunk? In the trunk? Surprise, you can't get to it! That's unless you pop the Frunk and jump the car's 12 battery. Then you can get your 12v booster and jumper cables to jump the car's 12v which allows you to unlock the whole car. So you do need the mini 12v battery.
That's unless you have a 12v booster source that's not stored in the car.
Yes, you can just attach the jumper cables to the above cables and open the frunk and then jumpstart the car.
@transDIVAlicous what above cables?
M3 owner for three years and new sub. I knew about the possibility of being locked out by a dead battery but was unaware of this trick. Thanks!
Glad you found it helpful. Thanks for watching!
A 9v battery works as well. I keep my 12v jumper unit in the Frunk so I can jump myself or anyone else. You are so right Jim! Us Tesla drivers are prepared.
You’re the only person I’ve seen mention this! Thank you!
That doesn’t happen often… Thanks!
Thank you! dealing with a 12v battery issue now
Your videos are really informative. Love it.
Oh yeah baby, I hit subscribe...I am researching, digesting, processing, learning, and enjoying the adventure as I prepare to move from my Hybrid into EV...Thank you for the video...
This was a great tip. Thanks. However, in my x, if you look under the front of your car there are two panels. Underneath one of my panels is a frunk release lever, in case something happens and you can’t digitally open your trunk. I’m sure the other models have one, too. Something worth looking into. 😊
On Thursday of this past week my A23-12 v battery that I use in my GTO transmitter to open my gate to my property died so I ordered two from the Home Depot. This morning I bumped into your TH-cam channel and I will place the second battery in the location you mentioned. Thank you for sharing and I agree that Tesla owners are.
Active. My next battery 12 v for the Tesla model 3 will be a lithium ion 12-volt. I just read your update on the dead 12-volt battery and since I do not use a cellphone to open the car door but the card key on the b-pillar I will have to do more research. I have read that the 12-volt that is lead that comes with a car is good for four and a half to five years, I will preorder a new 12 volt battery and place it in my garage and install it a half-year early as mine is now four and a half years old.
Great tip and I love the storage spot idea! I’ll be doing this to our Y. 👍
Thanks Brian. It's a cheap insurance policy for the battery. Hopefully set and forget.
Thanks for organizing today’s Tesla Rally, traveling from West Des Moines, up to Ledgers State Park! I enjoyed the good company, beautiful scenery and great BBQ food!
thank you Jim, awesome tip.
Awesome tip. Thanks Jim.
Glad you found it helpful. Thanks for watching!
Thanks much, 9 volt battery did it for me
THIS WORKED!! Thanks!!!
Thats got to be the best tip I've ever gotten anywhere...ever. I would never have known that had I not come across your channel looking for how to get to my 12v in my Model S...glad I stopped to check it out!!!
O
Read the replies above because the software updates have changed it and this doesn’t always work! The battery Hass to be completely done now, which is a new precaution with the latest software.
Awesome. Thanks for this tip on using the special battery to open the Frunk. Didn't realize they made that size 12v battery in the size of a AAA battery. I have a brand new Tesla model Y, so hopefully my vehicle 12V battery will be good for a while.
Thanks again and take care.
Great advice... thank you!
Excellent Tip. Thanks for posting.
Glad it was helpful!
Thanks for the tip. Ordered it.
Glad you found it helpful. Thanks for watching!
WOW, Extremely interesting. Thank you.
Outstanding! Thank You!!!
Hi Thanks for the tip Watching from Australia Cheers
Thank you for another fantastic video! I am awaiting the arrival of my 2023 MY LR (due between 2/21-3/21). My hallway is filled with deliveries for the MY, from floor pads , screen cover, tire compressor…Tesla card case! Now, I will be ordering the batteries you recommended.
23 models should have 16v batteries
Incredible, thanks so much
Great tip and great channel!!! Thanks Iowa Tesla Guy!
Thank you for posting this video. Your tip worked like a charm save myself probably thousands of dollars waiting for Tesla service to come unplug the car then for Tesla roadside to come tow the car pretty far away and then for Tesla to change the battery.
Very, very helpful video
Nice video! 👍 Which spare tyre and jack are recommended for the Tesla Model Y?
Fantastic video, thank you SO much ! !
Priceless ‼️‼️‼️👍😁
simply Genius. Thank you Sir.
Great job. Thanks
Nice job!
My Son’s 2019 m3 had the battery warning pop up - he messaged Tesla service & they had him come over to the service center right away - $114 done & done - pretty cool indeed - I ordered the a23 batteries recommended here for emergency backup for my model y
Nice! Thanks!
Great video. Speaking of Iowa, hope Okoboji gets some chargers installed someday soon. Even some J1772 or Destination. Go there every summer and think I'll have to stick to my gas car for now.
There are a lot of places that could use more charging in Iowa. Thanks for watching!
Genius thanks! I see that it works in Iowa. Will it work in South Carolina? This one video showed up in my feed and now I'm subscribing to your channel
My wife carries an A23 battery in her purse when we travel outside our HOME area and local Service Center here in St Louis. I have a Plug Kit and Air Compressor. My Y will be 2 years old in July 2022, am thinking about doing a pre-emptive strike replacing the 12V battery BEFORE it fails. The recent cost for a Mobil Tech service call is about $125 to replace the 12V battery.
Thank you for the videos. I have ordered a model Y LR AWD because of what I learned from your videos. You will be getting the referral miles from my delivery in 2 weeks. Keep on sharing the knowledge!!
Thank you. Thank you! You will love your Model Y. I'm certain of it! Thanks for watching and thanks for the miles!
Great tip!
Glad it was helpful! Thanks for watching!
Good thing is now the car notifies u when 12v is low
Goated Video!!
brilliant tip
Thank you!
This is good information. But the thing that worries me is someone can use this trick to open up your frunk.
I was always told that the frunk was the safest place to lock valuables in a locked Tesla because it couldn't be opened from the outside without the car being unlocked.
This video makes it seem that anyone with one of those batteries and access to a Tesla can get into your frunk.
Thanks for the content.
Very clever! Thank you : )
Glad it was helpful!
to add, i keep a NOCO battery jumper pack in my frunk, so once its opened i have something to give power to the 12v battery!
Great video
I was about to say what everyone else is saying that you don't need the small battery if you are getting a jump from someone else. However, what I'm going to do it carry the small battery when possible and keep a booster battery in the frunk.
This is ingenious! I had no idea. Question: could you not hook up jumper cables to the two small tow hook wires and get the same effect if you don’t have one of these little batteries?
Definitely we can. But that wouldn't sound smart and deserve a video
One thing to remember with the plug kits is that a plug alone is not condidered a proper repair. The speed rating is removed and the weight rating is reduced. Also, run flat tires are not considered repairable, so a rire that has been plugged must be replaced, along with the tire on the other side of the axle, as soon as possible. Run flat tires are limited as to speed and distance
best tip yet...peace
Excellent tip of the day …! Quick question … why you choose Model Y then Model 3 … can you throw some light on your decision that justifies to go with Y ?
I think you gave me a topic for another video. Almost bought a 3. Actually like the look of the 3 better. For me, went with the Y for a number of reasons. Cargo space. Higher seating position. Better ground clearance. Liked the blacked out look (the 3 still had chrome when I got my Y). I wanted the option to camp and thought the Y would be better and it is. Live in cold climate and wanted the heat pump (3 has this now). I'm sure there are more but I'll need to think on it. Thanks for watching!
Thank you ❤
Brilliant !
Should have hidden manual lever to open frunk. Good tip to correct an engineering mistake.
Good stuff!
Thanks. I appreciate that. Thanks for watching!
If you don’t happen to have the fancy 12 V battery, you should be able to MacGyver it with eight AA batteries. Just tape them in series (end-to-end), and 8 * 1.5V = 12V.
Absolutely correct! Just a little bulkier but will get the job done. Thanks for watching!
Yes. Any 12v source will do, including jumper cables from an ICE car.
A 9V battery also works.
@@Gyrobobb or even another Tesla 12 volt battery
I already have a 12V battery used for powering my Yamaha keyboard when playing outdoor. It last about 4 hours. Will make sure to carry it in my Tesla. The idea of 8 AA batteries connected in series is also a great one.
my battery went dead over the weekend. i ended up using jumper cables from my other car to touch those towhook wires and it popped open. then removed the terminal and trickle charge the battery. s
What do you do with the battery? It allows the frunk to open when the powers shutoff?
I like the battery idea. Definitely good to have one. I'd probably hide it on another part of your vehicle. Any reasonably intelligent thief will pop that panel and find it very convenient that you put the battery they need right there. Maybe find a spot in the belly panel, or the air intake?
Probably in the Owner's manual, but worth special mention. Thanks.
I'm sure it is. I probably need to go back and read the fine print. Thanks for watching!
Yes, it’s in there.
My model S has manual releases. I'd be surprised if other models didn't also have them.
Thanks for a great little tip. I hope I never need to use it, but ….
Very clever!
Glad you think so! Thanks for watching!
That is a battery used for garage door openers. So if you found someone with a garage door opener in their car you could borrow the battery and do that. Also any place that sells garage door openers would probably have those batteries in stock. But the smart move would be to replace the Tesla 12 volt battery when you get the notice on the screen that it needs replacing.
A common household 9V battery also works fine. Put it in the same place on a small ziplock bag. Thanks and I love your videos!
I haven't tried this myself but there are a number of videos stating that the 9V battery doesn't work anymore. I don't know if this is a software thing on the Tesla or if they changed the hardware along the way. I'll give it a try when I get a chance. Thanks for watching!
Genius!!!!
Gold. Gold I tell ya!
Awesome advice about storing the backup battery behind the plug! Three years ago when I got my Model 3, anyone could open my frunk with a 9 volt battery, but with a software update, it won’t open unless the 12 volt battery is dead. There is some backup 12 volt power in the penthouse of the high voltage battery, that is why Tesla has you unplug the connector beneath the left side of the back seat. I know that this is way beyond the scope of this video, but I threw it in for those that are interested in more information ℹ️
All great info. I didn't want to get too complicated. If the batter is dead, this tip should work. Thanks for watching!
Can I use booster cable attached to the 12v battery of any ICE car for this purpose?
Excellent information. The representative told me when I picked up my 2023 Model 3, that it did have the new 12 volt ion battery. What actually charges the 12 volt battery? I keep the car plugged in. I'm not a daily driver.Thanks.
If you have a newer car with the lithium low-voltage battery, then it's not actually 12 volts anymore; I think it's 16. To answer your question, the low-voltage battery is charged from the high-voltage battery using a DC-DC converter. In normal operation you don't need to do anything to keep the low-voltage battery charged. However, it is recommended that you keep the car plugged in, because the car periodically wakes up to run system tests, charge the low voltage battery, etc., and if you're plugged in to the wall, it will use AC power for these things instead of depleting the high-voltage/traction battery.
Look for this in your manual:
About the High Voltage Battery
Model 3 has one of the most sophisticated battery systems in the world. The most important way to preserve the high voltage Battery is to LEAVE YOUR VEHICLE PLUGGED IN when you are not using it. This is particularly important if you are not planning to drive Model 3 for several weeks.
NOTE: When left idle and unplugged, your vehicle periodically uses energy from the Battery for system tests and recharging the low voltage battery when necessary
I wonder if this will work for the newer Model Y that is 16V not 12V?
Where do you put your A23 battery? Do you hide it somewhere on the outside of your vehicle?
Could this battery also let you open the doors?
When it does come time to replace the 12V battery, I would say, whether it is in warranty or not, spend the extra money and get the Ohmmu lithium ion 12V battery. This is actually standard on all Teslas (even the 3 and Y) as of 2022 (well not the Ohmmu one, but an official one).
It's not compatible, stop spreading misinformation
@erikandmarcie that's absolutely incorrect. I've had the Ohmmu Model 3 LiPo battery in my car for 2 years.
@@nathanc.4862 Yep...I've had one for 3 weeks now. I did have some initial issues, but they said it was due to an outdated firmware. Ohmmu support was extremely helpful and I haven't had any issues since.
@@StormsparkPegasus what were the initial issues, and how were they resolved?
@@lowfuel6089 The car giving replace 12V battery errors. With the new battery once they get the new app version out it will be possible to do over the air firmware updates, but that won't be until spring. So for now they have to swap the battery with one with a newer firmware. I have since had the error come up again and am currently working with their support.
⚡Or you can just connect the jumper cables from another vehicle to the wires to open the trunk.
stuck between model y performance and long range... thoughts?
Is this same on Tesla model x 2017?
does this work for a model s aswell ?
A standard 9v battery worked for me to open the frunk
Did you show, then, how to get at the dead 12V?🌿
I think it would also be wise to put two 12 Volt connectors on these wires, to allow you to easily jump the car’s regular 12 Volt battery, which allows the car’s computer system to operate. Without it, your car won’t accept a charge from any source, Supercharger, or wall outlet. I ran out of power when I was inexperienced and had to be towed to a nearby Tesla Supercharger, only to discover that not only was the car’s larger primary Lithium battery bank dead, but also the standard 12 Volt battery was dead. This prevented the in-car computer from operating and therefore it couldn’t “handshake” with the Supercharger cable, to determine who is responsible for paying for the cost of the charge and couldn’t connect to the Supercharger to begin charging the car’s main Lithium power source that powers the drivetrain.
If you are getting jumped could you use the end of the jumper cables hooked to the other cars battery terminal to pop your frunk?
Yes. This this would work too.
Luvin it! ThnX
is that a free hack to help someone to steal my holiday shopping 🛍️ gifts from my model-y frunk? I hope Tesla has some software safeguards for this
Nice trick. What happens if I happen to have a 2021+ model when the 16V Lithium battery has been introduced? Would the 12 V battery help to pop my frunk?
Maybe, official guideline is to use a (ICE car used) jumper pack (yes it is also 12v).
The lithium battery has BMS, it may goes into self protection mode before battery is dead. the MOS inside the battery "disconnect" the circuit that requires to reopen. So a dead lithium battery may not dead really and steps are needed to recover it.
The service manual says 1) use jumper pack to try , if not helps then 2) disconnect lithium battery first, use jumper pack to start the car (depress brake pedal) and then reconnect lithium battery pack . The 2nd method is in the context of how to recover the "dead lithium battery", not how to open frunk, as to disconnect battery, the frunk must have been opened.
The 3rd method, which is the same as the 2nd, in addition from control screen tool box 3, selection actions tab to choose LVBMS reconnect LV battery, click run to see it passes, and and depress pedal.
Newer Teslas have a 16 volt battery, wonder if that little 12v battery would still work.
Can I use the miniature A23 btry?
Did not know thank you
why cant i use the jumper cable to pop the frunk? is that not much simpler
Frunk can be opened by a regular 9V battery as well. Test it
Hey there. Is there anything preventing a malicious person using that port to gain access to a Tesla owner's frunk? Also, I wonder if a vandal could spike a Tesla owners electrical system by hooking up a higher voltage source.
Hopefully the wires are on a closed loop system to a solenoid and hopefully gaining access to the frunk doesn't allow access to the rest of the vehicle by any other means.
I wish I had answers to both your questions but I don't. For me, Teslas aren't that common where I live and I highly doubt that anyone would even know enough to try this. If I find out, I'll come back to this. Thanks for watching!
This trick won't work unless the 12V battery is really dead or you have your tesla card or phone key with you. IOW, a bad guy with only a 12v source can not unlock the frunk.