Tesla Key Card and Fob Tips and DIY Alternatives

Teslas, be it Model S, X, 3, or Y, are beyond smart, almost intelligent. However, Tesla’s bouquet of technological features can overwhelm many fans. Most people need a while to become familiar with the scores of evolving attributes, including keys, fobs, and key cards. So how can you unlock a Tesla?

Tesla officially offers four ways to unlock your car: keys, fobs, key cards, and a smartphone app. Unofficially, you may try Tesla key card or fob alternatives like rings or bracelets. All methods have pros and cons, and you can use every mechanism for your convenience.

The latest Tesla models don’t have a key fob unless you purchase it separately. The default unlocking methods are the key card and your smartphone, either through the app or Bluetooth. This guide unlocks all the technicalities you should know about Tesla’s keys, fobs, and key cards. 

How To Unlock and Lock a Tesla

Tesla uses four technologies to unlock and lock its Models 3 and Y. The latest versions of the earlier flagship Models X and S can also support these mechanisms. 

Let’s go over each one of these methods below. 

1. Use Tesla Key Cards

The key card is Tesla’s primary and default access mechanism. Tesla introduced the short-range radio-frequency identification sensor in Model 3, located just below the side camera next to the front door. The key card has a chip and antenna inside. 

Place or tap the key card over the sensor in the frame to unlock and lock your Tesla. You’ll hear two honks when you unlock, and one after you lock the car. A pair of key cards is included in the package when you purchase a Tesla. You must add the second key card. 

Tesla Key Card Pros

  • Slender and light. 
  • You can pair several key cards for family and friends.
  • Easy to add, remove, and manage.

Tesla Key Card Cons

  • You must tap the key card physically.
  • The key card doesn’t facilitate passive lock or unlock.
  • The material isn’t sturdy enough for rough handling. 

2. Use Tesla’s Smartphone App

Tesla’s official smartphone app provides remote access to your car, allows you to lock and unlock your car, and offers several other controls. After activating your account, which may take around 48 hours, you can start using the remote access and other controlling features. 

You need a smartphone app, an internet connection, and an activated Tesla account to convert your phone into a Bluetooth key. Plus, you need to follow the same process for every new Tesla app account for family and friends.

Tesla Smartphone App Pros

  • Effortless remote access.
  • Lock, unlock, and restrict access to selected settings.
  • App-based climate control and navigation, etc.

Tesla Smartphone App Cons

  • Dependent on the internet.
  • Access is limited to phones with the app and activated accounts.
  • The app doesn’t facilitate passive lock or unlock. 
Tesla-Key-Card
You need the original authenticated key card to add or pair and authorize any new phone key, fob, or alternatives. The only way to program the original key card is by visiting a service center. Also, Tesla key fobs are preprogrammed, but third-party alternatives generally have blank chips.
Photo by Manny Becerra on Unsplash

3. Use Your Phone

You can use your phone as a Tesla key. Turn on the phone’s Bluetooth and pair it with the car. Before that, you need to download the smartphone app and get your username and password registered with Tesla to activate your account and add the phone.

Once paired, the phone serves as a standalone key, independent of the Tesla app, the key card, and key fobs—the latter only when or if you purchase. Tesla allows you to add up to 19 keys, including phones, cards, and fobs. Hence, you can convert several phones into Tesla keys. 

The most noteworthy advantage of using a phone key is convenience. You don’t have to place the Tesla key card on the sensor to unlock or lock. The phone’s proximity locks and unlocks the car, so you will hear a single or double honk as you walk towards or away from the Tesla. 

Phone Key Pros

  • Hands-free lock and unlock.
  • Automated lock and unlock based on proximity.
  • You can add several phone keys.
  • Easy to add, remove, and manage. 

Phone Key Cons

  • You need the phone at all times.
  • The phone must have a sufficient charge.
  • The Bluetooth must be on for auto lock and unlock.
  • Auto-lock and unlock efficiency varies for phones.

4. Use Tesla Key Fobs

Tesla key fobs are an official aftermarket accessory. You can buy a key fob from Tesla for around $150 to $175. Unlike key cards, you don’t get a pair of fobs. You can sync a key fob in the same way you would add a new phone or card.

In addition to locking and unlocking at close proximity, Tesla key fobs can also operate the trunks at the back and front. Double-click a Tesla key fob to unlock and single-click to lock the door and the rear or front trunk. You can add a maximum of four fobs among the 19 keys. 

Tesla Key Fob Pros

  • A conventional option to lock and unlock.
  • You can lock and unlock the trunks, too.
  • Water-resistant and sturdier than the key card.
  • Model Y fobs with the Tesla logo facilitate passive lock and unlock.

Tesla Key Fob Cons

  • You need to click once or twice for the fobs with the Model 3 logo.
  • Model 3 fobs don’t facilitate walk-away auto lock or passive entry.
  • Each key fob costs significant money.
  • The key fobs must be programmed by Tesla.
Tesla-Key-Fob-And-Wallet

Anyway, on a similar note, I also wrote a somewhat related article and discussed the question if EVs Have and Need Keys. Have a look to find some valuable info! Let me know what you think.

Tesla Key Card and Fob Alternatives

Tesla key and fob alternatives that are compatible with the same short-range radio-frequency technology as the official cards have a chip and antenna. You can buy an alternative or make your own using the key card components. 

The Tesla key fob alternatives are third-party accessories. Thus, the embedded chips and other technologies may or may not be compatible with your Tesla, which could be due to a specific issue with a model or the tech. Also, the accessories function differently from the Tesla key and fobs..

You can pair the alternatives in the same way you add your phone and a Tesla key fob or card. The device will appear as an unknown key, and you can save it using a preferred name. 

Here are a few readymade Tesla key fob alternatives on Amazon.com:

Products
Attributes

CNICK Tesla Key Ring

CNICK Tesla Key Bracelet

COLMO Model 3 Smart Ring 

KIMISS Car Smart Key
Form FactorRingBraceletRingRing
MaterialWoodWood and StonesCeramicCarbon Fiber
SizeUS: 6 to 10,  and 1316cm to 21cm (6.3in to 8.3in)7mm and 9mm (0.27in and 0.35in)US: 6 to 12
Colors344 & CustomBlack & Red
Tesla Models3 and Y3 and Y33, X, S, Y

DIY Tesla Key Card or Fob Alternative

The Tesla key card is essentially a plastic case for a copper-wire antenna and radio-frequency identification chip. You can remove the plastic, extract the chip and antenna, bend, or reshape it while ensuring it still works to fit into any form factor and make a DIY key.

Here’s an excellent video of taking a Tesla key card apart and testing the chip & antenna:

How Do You Drive a Tesla Without a Key Card?

You can drive a Tesla without a key card by using your paired phone, access the system through the official app, or buy a fob from Tesla. The key card and fob alternatives, such as rings or bracelets, are an option. However, verify if the third-party solutions can work seamlessly with your Tesla. 

You don’t need a key card to drive a Tesla. If you’re using any other paired keys, such as phone, app, or fob, you can unlock and lock your car, thus powering the system on and off, respectively. Once inside, press on the brake, then put the car into gear and drive. 

The only instances when you’ll need your key card are if you have to pair a new device, remove an existing fob, add another phone, don’t have any phone key, or manage different systems synced with the Tesla. Also, you can set a pin to drive for additional security. 

Set a Pin To Drive

Pin to Drive is a security feature to prevent unauthorized access to the system. Unlocking a Tesla gives you access to the control panel. A key card is required again only when you authorize significant changes or the system powers off in the absence of a paired phone or fob. 

Here’s a quick 2-minute video showing how you can set a pin to drive on Tesla Model 3:

How To Activate a Tesla Key Card

Your first key card should be activated when your Tesla is delivered or at the service center. Subsequently, you can use the first authenticated and activated key card to add all other keys, be it another card, your and others’ phones, a Tesla fob, or any alternative you may choose. 

Take these steps to add and activate a Tesla key card:

  1. Access the Menu on the Tesla touchscreen.
  2. Tap on Controls > Locks > +. 
  3. Scan the new key card on the center console.
  4. Scan the original authenticated key card to authorize.
  5. The new card will show up as an unknown key.
  6. Rename it and exit.

Can You Use Your Phone as a Key for Tesla?

You can use your phone as a Tesla key if it’s paired with the system through Bluetooth. Download the Tesla app on the phone, log in using registered details, add the device through the touchscreen Menu and Locks, and activate it using an authenticated key card. 

The same process of adding and activating a key card applies to pairing a phone, Tesla key fob, or alternatives. Adding a phone as a key requires authentication through the Tesla app in addition to key card authorization. Add key fobs by scanning them in the same way as cards.

Here’s a stepwise video tutorial on adding and activating Tesla key cards and phones:

How Do You Start a Tesla Without a Key?

You can start a Tesla without a key using your phone, a smartphone app, and a fob. The primary key card is required during setup, but you can use your smartphones for passive lock and unlock. Also, you can use Tesla’s app for instant access and 19 keys, including several phones, cards, and fobs. 

Every authorized method serves as a standalone access mechanism. You don’t need to rely on any particular key as all the 19 keys coexist and can function independently. Let us consider a few scenarios to elaborate. 

  • You can use your paired phone’s Bluetooth for passive entry (auto-unlock and lock).
  • You can use the Tesla app to lock, unlock, start, summon, and control many settings. 
  • You can ask someone you trust to use the app if you lose your smartphone.
  • You can download the app on someone’s smartphone, if available, and log in for access.
  • You can use a Tesla key, card, or fob alternative as a backup or primary entry mode. 

Can I Drive a Tesla Without the Key?

You can drive a Tesla without the key by accessing the system through the app. Also, you can start driving using your phone key, a card and fob alternative, or if the car is unlocked. Set a Pin-to-Drive if you intend to keep your Tesla unlocked and unattended. 

Would you like to know How To Lock Your Tesla While Charging? Check out this helpful article that I wrote.

How To Keep Tesla Unlocked

To keep Tesla unlocked, disable the walk-away auto-locking feature or unpair your phone key and passive fob. Key cards and fobs not facilitating passive entry won’t auto-lock your Tesla. Also, you may save the GPS location of your house, go to Locks, and choose Exclude Home.

You can enable or disable auto-locking features for every driver profile. Hence, using a phone as your key doesn’t necessarily compel you to use the passive entry and walk-away locking. 

Here’s a video detailing how you can change the auto-lock and related settings:

You must be precise with the GPS location if you choose to Exclude Home through Locks for your Tesla to stay unlocked in the garage or driveway. 

The navigation system can be somewhat lenient with the range or precise coverage area. Your car may inadvertently stay unlocked where you don’t want it to be readily accessible. 

It isn’t clear how much linear distance or radius Tesla considers as the proximity of your home’s location to execute this function. Some owners reported glitches when their Teslas remained unlocked even when they were several hundred meters away from their house. 


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Erwin Meyer
Erwin Meyer

Thanks for visiting evspeedy.com. The goal of this site is to be a helpful resource for Tesla and EV owners as this is where my passion lies. I was a TSLA shareholder before the hype and still am. I also believe in Tesla’s speedy mission to accelerate the world to a sustainable future.