How to Open, Start and Replace Fob Batteries in Tesla Vehicles
We have six videos for Tesla drivers
This one will help you get inside if the 12-volt start battery dies.
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Here is the process for getting into and getting going with a Model S.
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This one features a Model X. We get into and start it.
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Here is the Model 3, with some help from the Model 3 Owners Club.
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In this video, we replace the key fob’s battery. Model X only…
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And here the battery in a Model S fob.
Models covered include the Model X, Model S, Model 3 and Model Y.
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Remember that only proper service and repair procedures will ensure the safe and reliable operation of your car. In addition, proper safety procedures and precautions, such as the use of safety goggles, the right tools and the equipment should be followed at all times to eliminate the possibility of personal injury or improper service which could damage the vehicle or compromise its safety.
These posts are for information sharing purposes only, and should not be used in lieu of an OEM service manual or factory authorized service procedure. We are not in the auto repair business nor do we publish automotive service manuals. Nothing we include on these pages and posts has been reviewed, approved or authorized by any vehicle manufacturer.
Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow. And when it comes to the current state of flux in the auto industry, nothing is more true.
The author has 25 years of automotive experience and has assembled the most extensive collection of symbols and warning lights anywhere (over 1,000!) and can help you open and start any keyless start car with a dead key fob battery. BA, St. Joseph’s College, ME: MS, Rensselaer Polytechnic Institute, NY
There are three basic locations to try, as shown in the image, but experience tells us you might just as well skip to the last one. The first, top to bottom, is to simply drop the key fob into the cup holder. If this fails, hold the key fob against the front of the console, as we are doing in the image (second). There are several places that can be tried in this case alone.
If all these fail, the next recommendation is to remove the battery from the fob and run through the options again. As it happens, this is exactly what we had to do with the Model X we had and we landed at the base of the console before the car recognized the fob. That location, with the key fob resting in place, is shown in the second image. The fob was recognized at last and we were able to operate the car.
If you were given a key card, place it against the left side of the of the space at the front of the center console just below the screen, as shown to the right. The vehicle will recognize the card, the instrument panel will come to life and the car will be ready for action. Don’t lose the card!
If your mobile phone has gone dead or is missing, place the key card on the center console behind and between the two cup holders. The car will recognize the card and will allow it to be driven.
In the earliest versions of the Model S, the back of key fob is to be placed against the passenger side front fender, somewhat below and to the right of the emblem, as shown in the image. When the fob is recognized, the door handles will extend as they do normally.
The concept is the same in the newer Model S, but the location is changed. However, it remains on the passenger side. Place the key fob near the base of the passenger side windshield wiper. The image to the right shows the exact spot that worked in the model we tested, and we tried several. Then press the driver’s door handle. The handles will extend if it is recognized, but it took a full 20 seconds in the car we tested. Try repositioning the fob if this fails. If it continues not to be recognized, try removing the battery and go back through the process.
Tesla’s Model X uses an entirely different back up location. There again is no hard key or key cylinder. In addition, the door handles do not extend in normal operation as with the Model S. The mirrors will extend when the key fob is recognized.
To get in, the key card is placed on the door frame between the front and rear doors on the driver’s side and just above the bottom of the windows, as shown. As with other models, the mirrors will extend inviting you inside. The vehicles can be locked this way as well.
U.S. Cars Sold Overseas Leave Drivers in the Dark
Drivers in the Dark, Part 1
Over the last several months we have been contacted by two drivers of U.S. cars sold and likely built overseas who could not find a back-up spot to drop the key fob in the event of the fob’s battery dying. Well, a good deal of sleuthing and a hunch resolved one of these cases.
First, we have to acknowledge the diligent work of one of the vehicles owners. He sent pics of all the spots we could think of that might be used as a back up slot and noted which style key was in use. Then after the hunch, he took the time to perform the test we suggested. The other driver essentially gave, up or possibly found an answer elsewhere and didn’t let us know.
As you can see from the photo he sent (right), the client’s car does not have this slot.
Part 2
Then, we got hold of a new, 2017 Cruze. And like a handful of other GM models, the back up slot had been moved to one of the cup holders. And, unlike European cars, the spot goes unmarked.
And while the Cruze did not use a flip key, it suggested a possible solution to our overseas client. He removed the battery from the fob and dropped it into the front cup holder, and was able to start the car (the fob will be recognized from the back up slot in GM vehicles, at least temporarily, even with the battery actually missing). He is relieved to have an actual back-up plan.
The moral of the story for drivers of U.S. designed vehicles sold overseas is this (and we include Ford as well just in case, although we have not seen this come up). If the battery in your key fob is dead, there is still a back up plan. However, your owner’s manual may not reflect it. Try each and every one of the dozen or so back up spots found on our pages. We are pretty confident one of them will get you going.
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Remember that only proper service and repair procedures will ensure the safe and reliable operation of your car. In addition, proper safety procedures and precautions, such as the use of safety goggles, the right tools and the equipment should be followed at all times to eliminate the possibility of personal injury or improper service which could damage the vehicle or compromise its safety.
These posts are for information sharing purposes only, and should not be used in lieu of an OEM service manual or factory authorized service procedure. We are not in the auto repair business nor do we publish automotive service manuals. Nothing we include on these pages and posts has been reviewed, approved or authorized by any vehicle manufacturer.
Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow. And when it comes to the current state of flux in the auto industry, nothing is more true.
The author has 25 years of automotive experience and has assembled the most extensive collection of symbols and warning lights anywhere (over 1,000!) and can help you open and start any keyless start car with a dead key fob battery. BA, St. Joseph’s College, ME: MS, Rensselaer Polytechnic Institute, NY