I Drowned My Key Fob
Fourth of July 2024 I managed to do what to do what so many others have done. I took my key fob for a swim — literally. Took off the sunglasses, took off the shirt, took off the shoes and jumped in for about 10 minutes — forgetting my keys were in the swimsuit pocket!
The fob survived and I will detail what I did to save it and how its construction likely helped. So while I describe here may not work with yours, it will definitely be worth a try.
Important! Don’t push any buttons until the key fob is dried!!
The fob is from a Polestar, which is a duplicate of the latest Volvo fob. Once I realized the fob had been possibly compromised, I immediately moved to take it apart. You should do the same as quickly as possible. The video that takes you through the process for this fob is linked at the end of the video. And we likely have one for whatever make and model you have.
A Cover and an O-ring
This particular fob features the cover that had to be removed to get at the battery, as you see. Behind the cover is a rubber O-ring that likely saved this fob. Regardless, I wiped down all the pieces and set them on a windowsill that had full sun and left them for an hour. Waiting was the hardest part. Do the same, drop the pieces in rice, use a hair drier or anything you can think of to dry yours out. Wait long enough for the fob to be completely dry!
Don’t touch any electronics with your fingers. Skin oils will lead to corrosion eventually negating the drying work.
Afterwards, I reassembled the fob — and I now had a photographer. Once assembled, we stepped out to the car. The video below shows the car responding to the fob and me announcing it was time to celebrate!
Hopefully this helps rescue your fob.
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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
The driver pulled over describes the computer as “his only center console” when he clearly meant something else and stated that it handles his air conditioning.
Some weeks earlier, we had received this thank you (right) for one of our videos, covering a Mini in this case. We’ve transcribed it here, ‘as is’.
Only a few manufacturers give a useful message if starting the car fails as shown to the right. And while we had at one time hoped that the industry would move to make this clear in every vehicle, most still simply refer the driver to the manual.
In truth, there are many similarities. For instance, most back up pockets are in the center console of GM vehicles. However, the Acadia’s pocket is at the top of the back of the console, only the 4th model using this area. The majority of the other models feature the slot somewhere in the front of the center console. The steering column and glove box are also used.
But because they are side by side, it is the first to use a left side cup holder. The Chevrolet Camaro uses the back one while the Buick Encore and Envision use the front. The Verano, Regal and Lacrosse also use the front, but the cup holder itself needs to be removed! And so on.
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.
The car in question was a Chevrolet Malibu. The owner’s manual was available and was dead wrong, which is, of course, the true source of the problem. The year, make and model in the U.S. has a back up slot in the center console.
It also uses a flip key, which suggested a spot like that is used in the Cruze (right) or first generation Volt. No such plug in spot exists in the Malibu in question.
Disabling a Key Fob Could Prevent Car Theft
We came across a video some time ago from Now You Know – linked here – where a Toyota guy highlighted a Toyota key fob feature: Disabling a Key Fob. Press and hold the lock button, and while doing so, press the unlock button twice. This disables the proximity access feature of the fob.
We then verified it on a Toyota as well and it works! See the video below.
Now, not to worry, a simple press of the unlock button not only gets you in the car, it also restores the proximity feature.
But we’re not Toyota guys, so we set out to test as many cars as we could get our hands on. But before we get there, why is this even important?
The proximity feature of a fob only works within about 18 inches of a lock. But the fact is, clever thieves can tap into the signal from a live fob even though its seemingly not in use. Likely as not you’ve had the experience of using an unlock or lock button from 50 ft or even more. I can lock/unlock my car from a good 70 ft.
This is the signal that can be tapped from a live fob, essentially duplicated on a computer and your car is gone. The video is from CNN is right here.
And it can be done while you’re at home and the car is in you’re driveway! This is the value of the disabled fob feature.
What of Other Manufacturers
So who else? We tried a Nissan, but no dice. Actually, it turns that two Nissan models we tested do not lock or unlock with a touch of the door handle, so disabling is unnecessary. We tried a Dodge, which again did not work.
We then tested a Lexus, which is a Toyota product, it did work. It did not work on an Audi, a Volvo, a Polestar, an Acura, a Volkswagen or a BMW.
So, this is a call to all manufacturers to implement the feature, and to you the owner of any Toyota and Lexus models to use the feature. And if you have a model from a manufacturer that we didn’t test, try it and let us know in the comments if it worked – or not.
We did a video on the subject, linked below.
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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