Mazda 3 Smart Key Fob Battery Replacement - DIY

Battery you need - amzn.to/2yDJgXb
2019 MAZDA 3 SMART KEYLESS REMOTE FOB FCC ID: WAZSKE11D01
here is a video showing how to open up the new 2019 Mazda 3 key FOB to change the battery. It carries a 2032 battery.

[@KeyFobRob]

Battery you need - amzn.to/2yDJgXb

[@RandHough]

I still find it kinda hard to believe that the company that made my utterly fantastic car made this ridiculously over-engineered fob the very same year

[@Calmerthanyouare17]

Just got my car yesterday and I couldn’t agree more. It’s so cheap looking. I liked the 2018 much better.

[@MD-ub2mz]

Because car thieves don't steal dead batteries in fobs? Or sell replacement fobs at dealerships?

[@mountainlife8056]

I think the car is shit lol. Start stop never worked, over sensitive sensors, broken side mirrors due to wet. Massively disappointed

[@danielnaude8316]

Because Engineers need jobs Lmfao

[@rizzo6496]

Yes...this key fob is not user friendly...and yes the wing mirrors don't last long...same as the older 2009 model.

[@charliepassalacqua8602]

The most ridiculously insane key fob design ever - Rube Goldberg would be proud. May the engineer that designed this contraption end up in a labyrinth inside of a labyrinth inside another labyrinth. Thanks for the excellent video unraveling the mystery!

[@sunkorg]

Also worth noting that if you hit the "lock" button too many times out of the habit of locking your doors manually, you can accidentally put your key FOB in "sleep" mode. This will render functions like the door handle touch sensor for unlocking the car and even the car detecting the FOB to start the car useless. If that happens, you can deactivate sleep mode by clicking on the "lock" button four times within three seconds. At that point, a red light should appear above the lock button. Then hold down the button for one full second until the light goes out. That should reset the mode.

[@Laborchet]

Holy shit dude! I’ve been having this issue! Key button works but none of the proximity features work, have to hold key up to ignition button to start the car. Figured battery was dying so replaced it, same deal. Replaced again. Same deal. Here I am at 2 am scrolling through YT comments in hope there is some info I’m missing and holy fkn shit! I stumble into this gem of a comment!

[@richywts]

bro you just saved my LIFE!

[@richywts]

was over here playing with my key tryna do some shi from tiktok and my key fob stopped working

[@knutehenning4351]

Thank you. This saved me a trip to the dealer.

[@Ryukomytoy]

Life saver

[@ericthomas9662]

Great tutorial! Transformed an enigma that threatened a costly and time-wasting visit to the Mazda dealership into a quick and ridiculously easy DIY task. Thank you very much!

[@KeyFobRob]

Glad I could help!

[@DirkvanBuuren]

Thank you! To think that someone at Mazda actually put so much thought and effort into engineering something this complicated.

[@KeyFobRob]

Glad the video was helpful - take care!

[@Tamales888]

And that then falls apart if you drop from like 1 foot off the ground lol

[@thesuperduck24]

three years old, and still a quick and easy tutorial! thanks so much!

[@KeyFobRob]

You're welcome!

[@jodycameron-roy2544]

This is such a clear tutorial and straight to the point. Thank you!

[@KeyFobRob]

Glad I could help you out

[@enriquecamarena1056]

​@Key Fob Rob same here. Mine though, has a key inside the fob. Haven't tried to find out where it goes 😂.

[@dougiequick1]

too bad it is such a user unfriendly design thst we need this video!

[@bertolo6524]

I did not expect that it is so complicated. But with the help of your video, I was able to change the battery required. Thanks for the helpful video!

[@KeyFobRob]

You're welcome!

[@lennieblue]

First time I've ever had to do this. I'm 62 and always had keyed fobs. 1,2,3, you made it easy! Thank you. Excellent instructions.

[@KeyFobRob]

Glad it helped!

[@dougiequick1]

You are a sheep to accept this design simply because it is possible with a video! IMHO...,PLEASE demand MORE from a company! But I do thank key bob rob not his fault

[@bryanblakeney7289]

Thank you so much for walking me thru this. I’m probably the least “handy” person in the comments but it worked! Can you believe the FOB battery for my 3 week old car died??

[@matthewgironda6989]

Perfect... tried this once on my own and the fob is now wrapped in packaging tape. This made it a breeze (and it looks a lot better). Thanks!

[@KeyFobRob]

Glad it helped!

[@lovejoy444]

Exactly! I half-cracked a couple little spots with the mini screwdriver trying to pry it apart b4 finding this video. It's like a fucking Russian nesting doll, but with all kinds of built-in traps and ways for you to break it so that ya have to buy a new one.

[@greglisk9408]

Thanks for this, but what kind of psychopath designs a thing like that. You should be able to pull that little lever and slide the whole mechanism open with the spare key and battery exposed. No tools necessary. The stupidity of designers never ceases to amaze. I guess they never stop looking for ways to make stuff non user serviceable so they can charge you $100 to do it for you.

[@KeyFobRob]

Agreed. One of the main reasons I made this video.

[@TheGozzila]

Robbie TwoScraps I felt like I was gonna break the key, all the while my lock/unlock buttons kept getting press trying to pry it open so I just keep hearing the car honking and beeping outside my house

[@KeyFobRob]

@@TheGozzila ha! Someone is breaking into your car! Nope that is just me changing the battery on my fob

[@KlounAda]

Previous key fob (CX-5) was better in my opinion, smaller and easy with battery change.

[@troyleegilbert790]

@@KeyFobRob much appreciated.

[@chargurl5897]

Thanks for this tutorial Key Fob Rob! I cruised along until I got to the back side of the fob. It was really stiff from not being opened since I got the car in 2019 (and probably the original battery). It took a little finesse, (and a few tense moments of thinking ‘am I going to break this?’ but I knew it was possible to open from watching this video. It was the best feeling ever when it finally popped off! So happy I replaced the battery myself and didn’t have to take it to the dealership. 😁👍🏻

[@KeyFobRob]

Good stuff! Glad I could save you a trip and some cash!

[@petercoghlan2217]

The video was great, got both keys done. Saved a fortune more in in time than money. Local Mazda used to want AUD $20 each but DIY is only AUD $6.80 for two batteries from Bunnings. PS:car dvises you to touch the non key ring end of fob to the keyless star to fully re-sync the key to the car

[@dougiequick1]

We bought a huge package of these all on one big blister pack card for I want to say $10 Dura cell so less than a dollar a battery.....wish they still used the same battery as my older Mazda lol (2018 MX5 uses the old style fob EASY to figure out with NO video needed!)

[@st.brendan7330]

Thanks so much. Your video really made the battery replacement very easy. Mazda really made the process so much more difficult than it needs to be.

[@KeyFobRob]

Glad it helped

[@AozoraUltra2006]

Literally half a million people needed your help, including me

[@KeyFobRob]

Welcome to the club!

[@PeterPug]

Yeouch! This has got to be one of the most complicated key fobs for battery replacement! But thanks!!!!!!

[@KeyFobRob]

This ranks up there with the newest Rolls Royce fob

[@ccdrums5312]

This video truly came in clutch. I work night shifts. Got home from work and put my uniform in the wash, not knowing that I had accidentally put the keys in with it. Keys short circuited or something and ended up continuously activating the panic button at 4:30 AM. Keep in mind I live in a suburban neighbourhood. Had to take the battery out but didn’t know how. I hope you know, Mr. Key Fob Rob that I can now sleep peacefully knowing that the panic button on my car isn’t continuously going off at an ungodly hour, potentially waking up neighbours. ( lucky for me, the car was in a garage so I’m not sure how loud it must’ve been)

[@mikalove9987]

Dame I just did the same exact thing .... word from word......

[@mikalove9987]

Did your key work after replacing the battery???

[@danrobinson9376]

As everyone has said: great, clear, and easy to follow. I found several videos on KZbin about this, but yours is absolutely the best. Thank you!

[@KeyFobRob]

Glad it helped!

[@ruthw33]

Finally, a DYI video that goes right to the point and is easy to follow!!!! Thank you! 😀

[@KeyFobRob]

Glad it was helpful!

[@pvtjohntowle4081]

Saved this video to my Mazda 3 Playlist on KZbin will come in handy in the future. Mazda Astina BP G25 Sedan

[@adrians5852]

Even 4 years later this video has helped me. This key fob had to be a puzzle box originally because who in their right mind thinks this is straight forward for a battery change. Many thanks!

[@KeyFobRob]

You're welcome! Glad the video was helpful

[@deepblueskyK]

Great video + description. Sadly, the new key "design" seems to be "inferior" to the old one in every possible way. It's chunky, the keys are misplaced, and the new key's battery replacement is VERY complicated. I've absolutely no idea who came up with this!?

[@KeyFobRob]

Someone who wanted you to come to the dealership and spend some cash ;)

[@Maxfli82]

The writing on mine says Mitsubishi. So probably those guys.

[@segoiii]

Ah Mitsubishi. The ones who did everything wrong that was possible the last 15 years. Cancelled popular models and replaced them with crap models or not at all. They must have a voodoo spell on them.

[@Dr_Reason]

@@segoiii Lowest bid?

[@lyndalholdsworth9183]

Thank you, clear and short. To the point for this happy car owner. 💫

[@omarvasquez6851]

Thanks for the video. Our Mazda Mx5 is only one year old, it is a 2020 model and the battery already needs replacement! We also own two Toyota’s from 2010 and 2012 and we only have replaced the batteries once.

[@ChrisLivingston33]

Same here! Not the most battery friendly.

[@WendyBones]

THANK YOU SO MUCH. Our fobs lasted since he bought the car in 2019 to today, though we'd been getting the warning light of "low battery" for some time. Finally bought the batteries before it was too late...this video was awesome and made it so easy. Thank you!!! I have successfully replaced our fob batteries, yay!! I didn't have a tiny flathead screwdriver, so I used a tiny flathead drill bit and butterknife.

[@KeyFobRob]

Glad it helped! Take care

[@dougiequick1]

ours last less than a year ...i guess too much beeping the horn to find the car in parking lot idk lol

[@OroborusFMA]

My 2019 Mazda needed a new key battery. This made changing the battery take just a minute. Thumbs up!

[@KeyFobRob]

Great! Glad you found the video helpful!

[@4wlw]

Thank you ! Saved me a lot of money with a replacement and instead only cost me 10 bucks and 10 minutes !

[@KeyFobRob]

Glad it was helpful!

[@noirlumine]

Really concise video for something ridiculously designed. Thanks for your help!🤩

[@KeyFobRob]

You're very welcome!

[@hercilia7]

I just got my Mazda cx-30 from CarMax on 3 days ago and I was using the fob I declared as the backup becos it’s less used that the other one I was given and it’s already saying that the battery was low😂 glad it’s actually easy to change, thank you!

[@KeyFobRob]

Glad it helped!

[@ClearAlera]

Thanks so much for this! The last generation of Mazda fobs was not nearly as complicated to change, so I felt like I was missing something really obvious with this generation. Looks like they just made it unnecessarily difficult lol. Also, it seems like the battery on this one ran out really quickly - it only lasted 4 months, but I have keyless entry turned on which supposedly drains the battery more quickly. I'll try turning it off and see if there's a noticeable improvement.

[@DaedricFaZe]

mine lasted 32,000 miles

[@RadioStaring]

Keeping it in faraday cage will supposedly cut down on the phobs battery drain. I got over one year keeping it in little faraday box

[@matsudakodo]

Mine lasted 2.5 years or 12,000 miles before it started warning me of low battery, but I replaced it before it died.

[@givvia6782]

And it felt expensive and weighty in comparison to the new key fob!

[@asjeot]

Thanks for your video. It is overly complicated to change the battery but your video was essential for me to get it done.

[@KeyFobRob]

Glad it helped

[@johnlay3040]

Thank you for providing such a great help to all Mazda 3 owners. You save us some money.

[@KeyFobRob]

Awesome. Thanks for stopping in and glad you found the video helpful!

[@winghun]

Great vid, my wife has been chasing me for a couple of days to change the battery, I guess I have her pre-Christmas gift thanks to you.

[@KeyFobRob]

Good stuff! Glad you could get it sorted out

[@DengerSpace]

Thank you for the video: clear, concise, straightforward. Well done.

[@KeyFobRob]

Thank you!

[@brandonnie5179]

Clear and concise instruction, thank you good sir. This tutorial will go down as a piece of gem in the internet

[@KeyFobRob]

ha! Just trying help a few internet people :)

[@deborahfischer5708]

Could not have done this without this video! Thank you

[@KeyFobRob]

You're welcome 😁

[@TheLegendOfMegaMan]

Big thanks, my hire car key was failing and you saved me a potential nightmare. You're the man!

[@KeyFobRob]

Glad I could help! Take care

[@Laszlo1079]

Exactly what I needed! Perfekt and accurate. Thanks so much!

[@KeyFobRob]

Glad it helped!

[@PaulMansfield]

This guide was perfect, thanks, as my car dash started saying the key fob needed a new battery.

[@KeyFobRob]

No problem

[@DjC4]

Cheers the battery takes so long to die I always have to re watch this when I need to change it again 😂 super clear and to the point

[@KeyFobRob]

All good! See you again in a couple years!

[@opmike343]

This has to be the most complicated fob in history. I have to refer back to this video every time I need to change the unusually quickly draining battery.

[@KeyFobRob]

It is unnecessarily complicated

[@trythis1995]

Unbelievable how hard this is. Thanks for the helpful video.

[@KeyFobRob]

Glad you found the video helpful!

[@kevin-douglasolive3616]

Thanks, man. Works for Mazda 6 2020. Much cheaper than having them do it !

[@KeyFobRob]

Yup! Saved yourself some cash

[@douglasrudolph9158]

Thanks for the tutorial. Even though it’s the second Mazda key fob battery I’ve changed, I’ve slept since then, and gotta watch the video again. Thank you.

[@KeyFobRob]

Glad I could help

[@opmike343]

LOL!

[@infamis_cigar_smoker2534]

Straight to the point…great video and thank u!

[@KeyFobRob]

Great! Glad you found the video helpful!

[@mattr7442]

Awesome vid!!! Saved time & some dough by not having the dealer do it. Seriously trying to find instructions in the Mazda supplied user manual is futile.

[@KeyFobRob]

Glad it helped!

[@leslietma]

Still haven't been able to put it back together. After lining up the long piece in the slot, I never could get it to completely snap closed. But it's working, at least. Will grapple with it again on another day. Hate this design! Thank you for your video.

[@Borkolini]

Thank you, this video is excellent! Straight to the point with very clear instructions.

[@KeyFobRob]

Glad it helped!

[@nadiva]

Thanks for your excellent and clear video! and the last piece is clearer to put on when the key is in it's holder.

[@KeyFobRob]

Glad it helped!

[@SuperSquishy15]

Thank you so much for this video. I remembered where I needed to go but couldn’t figure out HOW to get there!

[@KeyFobRob]

Glad I could help!

[@bsquared1512]

Thanks! Just saved me $15. Bough my battery at dollar store and used this video to change it.

[@KeyFobRob]

Good stuff 👍

[@zbighugh9193]

Lifesaver! Rob, you just made the world a better place! Truly a life well-lived! Excelsior!

[@KeyFobRob]

Glad I could make your day a little bit easier :)

[@zbighugh9193]

@@KeyFobRob The nearby Mazda dealership closed down so I was really annoyed and worried about going all the way to the further dealership where it was always crowded and with so many customers at the service center, changing the battery on my car fob would probably entail me waiting for hours. So your do-it-yourself tutorial was a real godsend! Muchos gracias para todos! Danke scherne. Domo arigato gozaimashita. Maraming salamat!

[@theodoraliosatos5460]

Thank you. Short and to the point and works!!!

[@KeyFobRob]

Glad it helped!

[@flyfox3621]

Thanks for such a straightforward tutorial!

[@KeyFobRob]

Glad it was helpful!

[@cocochanel4624]

Thank you soooooooo much!!!!! I've had to refer twice, in two years, to your tutorial!!!! Thank you!!!

[@KeyFobRob]

Glad it helped! See you in 2025!

[@CycleThePuck]

Thank you for this video. Just replaced both batteries on my Mazda 3 key fob. Your video was very helpful

[@KeyFobRob]

Glad it helped

[@adiberman3159]

Thank you, I did exactly as you showed. Works like a charm

[@KeyFobRob]

Great!

[@williamraney3421]

Thanks- worked like a charm for both fobs

[@KeyFobRob]

Glad I could help!

[@raekell]

This is definitely NOT what the mazda website says to do. This actually works, while Mazda's directions were unclear and led to no results. Thanks!

[@KeyFobRob]

Glad the video was helpful!

[@CanadianMax]

Thank you. Great how-to!

[@JosephVitugJV]

We can really help people in many ways. Thank you for your help.

[@KeyFobRob]

You're welcome 😁

[@brianholidae]

Thanks. This was easier than I thought..

[@vin6135]

Just found this video. Thank you very much for doing it. I agree with the other comments that this is way over engineered. The previous key fob was a much better design. You could easily slip out the back up key and pop up the cover to change the battery.

[@KeyFobRob]

Glad it was helpful!

[@RichieCastellano]

Thank you for this!

[@KeyFobRob]

Glad it was helpful!

[@karenpang8048]

thank you so much for saving us $100 + (I have the 2019 Mazda 3) and this worked perfectly

[@KeyFobRob]

Awesome! Glad I could help you save some cash :)

[@lateonenite]

Awesome! I’ve replaced my key fob batteries twice us ing this video. You can get packs of the batteries from woolies if you’re stuck (commenting from Australia).

[@KeyFobRob]

Glad the video was helpful. Can't say I've heard of woolies. Don't believe we have those in the USA

[@WarmongerYT]

Thank you! This video was extremely helpful & straight to the point! 🎉 🎆🎇 Truly appreciate it! Great vid.

[@KeyFobRob]

Great! Glad it was helpful

[@MommaTwoShoes]

Great tutorial! Thanks for the help

[@KeyFobRob]

No problem!

[@mariadagostinohannam7410]

Thank you. My car just told me my battery was fob battery was low and to change it. Thanks to you, it was easy :-)

[@KeyFobRob]

Glad it helped

[@neilm9400]

Thank you. A nice straight forward explanation.

[@KeyFobRob]

Glad I the video could help you out! Take care!

[@mattolfson9230]

Thanks, Rob! Mazda's other fob was a *lot* easier to change batteries on.

[@KeyFobRob]

You're welcome! They are getting a lot more complex.

[@TheBryce3737]

Exactly what I needed. Thanks!

[@KeyFobRob]

Glad it was helpful!

[@elgoogler3581]

Thank you for taking the time to make this video really helped

[@KeyFobRob]

Glad it helped

[@kaylaantonio6460]

Just dropped my key on the floor and it exploded into parts - thanks for the walk through to put it back together!

[@KeyFobRob]

Glad I could help!

[@donnatodd4119]

This happened to me too!

[@teejay1474]

Thank you - nice and straight forward tutorial, so helpful.

[@KeyFobRob]

no problem!

[@ellenshulman5795]

Thank you. Worked perfectly.

[@KeyFobRob]

Glad it helped

[@jennyg9653]

Truly appreciate this!

[@KeyFobRob]

No problem! Glad it helped you out

[@janice7425]

I did it! Great video. Thanks!

[@Lageno]

Perfect guide! Thank you for this video.

[@KeyFobRob]

Glad it was helpful!

[@UCUFamily]

Multumesc pentru clip, chiar mi-a fost de ajutor

[@KeyFobRob]

cu multa placere. Mă bucur că a ajutat

[@Mila229]

Thank you very m7ch for this video - helped us replace the battery. Otherwise we wouldn't even know how to begin.

[@KeyFobRob]

Glad it was helpful!

[@mark52111]

excellent video. nightmare fob. battery replaced with minimal cursing thanks to video. thank you brother.

[@KeyFobRob]

You bet - glad I could keep your blood pressure at normal levels

[@elliotcunningham951]

Thanks for posting this video!!

[@KeyFobRob]

No problem!

[@athomas2k8]

Thanks! Did this on the 2021 turbo but now my car won’t start or unlock u less key is held to push button start? Do you know how to fix this?

[@HydeTide]

Great video. I never would have figured that out.

[@KeyFobRob]

Glad it was helpful!

[@oldu.s.marine3834]

Thank you for making such a concise and very easy to understand video, and not wasting our time. I give you 5 STARS a 10 out of 10, and I’m subscribing to your channel after I LIKE the video

[@KeyFobRob]

Very much appreciated!

[@angelokrieger3357]

Thanks for the video! It's very helpful!

[@KeyFobRob]

Glad to hear that!

[@jakoblemieux905]

awesome video, thanks for the detailed explanation!

[@KeyFobRob]

Glad it was helpful!

[@br_i4360]

Thank you so much! It was immensely helpful!

[@KeyFobRob]

You're welcome!

[@elzbietam.6770]

Great tutorial - thanks

[@KeyFobRob]

Glad it was helpful!

[@daisukidatotoro]

Thank you! This was very helpful

[@KeyFobRob]

Glad it helped!

[@jcnewell3852]

Did you have to have the fob reprogrammed after you changed the battery?

[@hermanlelieveld]

Thanks, I needed this!

[@KeyFobRob]

Glad it helped 😁

[@putty888]

Awesome! Just saved me $75 from having to take it to mazda for them to replace it

[@KeyFobRob]

Awesome!!

[@minaknits3140]

Andreas B I just replaced mine after 3 years of ownership (mazda3 2017). Surprisingly the batteries in both my key fobs died the same month. How long did yours last?

[@TheGozzila]

Hold up, they’ll charge you $75????

[@hannahpotato3722]

minaknits I got mine in Feb and the battery already needs to be replaced 😪

[@AbrahamsYTC]

Thats insane. I'd understand if they had a fee for it but $75 is outrageous.

[@jimiprice6182]

Great tutorial! Thanks!!

[@KeyFobRob]

Glad it helped

[@Sashalexandros]

Thanks mate, saved me a few hours wasted on going to the distributor.

[@KeyFobRob]

Glad it helped

[@zbigniewjanaszek3760]

Thank you very much. The manual is very good.

[@KeyFobRob]

You are welcome!

[@matthewgale5959]

Thanks very much. That was very clear, so very helpful. Job done!

[@KeyFobRob]

Glad the video was helpful