1) Pull the key up and out while sliding the spring-loaded holder to the left (RED) with the FOB buttons facing up (BLUE).
2) Slide the spring-loaded holder to the right (RED) while pushing the back panel up (BLUE), with the FOB buttons facing down. It should slide right out. If this is difficult to remove, try using a rubber glove to increase your grasp on the FOB.
3) Using a philips #0 screwdriver, remove the four screws that are highlighted in red. The battery cover plate can then be raised using a paperclip or thin flat-head screwdriver; pry from the position indicated by the BLUE arrow.
4) Replace the battery with a CR2032, with the positive (+) side towards the cover panel. Removal is followed by assembly.
In This Article...
What kind of battery is required for a Prius key fob?
A replacement smart key for a Prius can cost up to and over $100, therefore we’re going to walk you through the process of replacing the batteries in one. This could be an excellent place to start if you’re having issues with yours. A new battery is far less expensive than a new key, so it’s worth trying before spending money on a new one even though it’s not a guarantee that it will solve your problems.
There are a few things you’ll need before you begin disassembling stuff. The replacement battery comes first. This battery is a 2032 button cell. Buy a quality brand; they do have a tendency to last longer. Even though changing it isn’t that difficult, the fewer frequently you have to do it, the better. You can purchase a four-pack of them on Amazon for just over $7.
You also require a mini Phillips screwdriver. I suggest getting this kit from Amazon if you don’t already have one. It provides everything you require and is similar to a kit I purchased for fixing iPhones. The screws will adhere to the screwdrivers because they are magnetic. The entire gear costs less than $7 and significantly simplifies the task.
A magnetic tray is quite helpful but not absolutely necessary. Use this to maintain the screws’ position. Once more, you can purchase one from Amazon for about $7. The screws can be held together with anything, but in the past I’ve knocked over dishes and scattered screws all over the place, never to be seen again. Just a helpful hint.
Take the key out of the housing’s interior. To do this, turn the key so that the Toyota logo is facing you and move the mechanism at the bottom to the left. Then, pull on the key. It ought to be easy for it to decouple itself.
You must now take off the smart key’s back cover. The Toyota logo is on this side. To accomplish this, slide the bottom mechanism on the left while putting pressure to the covering. How difficult it is will depend on how old your key is. If you’re having problems, you can slip anything to give you a little more traction in the seam at the top, above the Toyota emblem. Two plastic triangle tools for this purpose are included in the screwdriver kit that is linked above. If you didn’t, a guitar pick or credit card will work just as well. To avoid damaging the plastic casing, avoid using anything metallic to pry it open.
There are four screws to remove after the casing is removed. Remember to be delicate when using the micro Phillips head screwdriver on this. Stripping the screw heads at this point is the last thing you want to do. Once they’re out, raise the covering you removed the screws from using a plastic tool or a small flathead screwdriver. It ought to come out easily, exposing the battery.
The old battery should protrude out if you apply just a little pressure to the holder’s flanged edge. To properly install the new battery, keep in mind to note which way the old one is facing. Slide the new battery in after removing the old one. Remember to install it correctly; the positive terminal should face outward and in your direction.
Replace the internal housing’s four screws and plastic cover. If you need to change the battery again, damage or problems may result from overtightening the screws. Reinstall the outer case, which bears the Toyota emblem. To make it click into place, slide it into position while depressing the sliding mechanism at the bottom to the left. Slide the mechanism to the left one more to reinstall the key.
By pressing one of the lock buttons, you may verify if it operates. If it is, you should see a red LED blinking.
What happens if the battery in your Prius key dies?
The start button can be actuated by holding the dead key fob very close to it. The vehicle will then start and run once you press the start button. If this doesn’t work completely, push the start button while holding the fob against it for a brief period of time. This will actually depress the start button. Should operate
The battery inside your key fob can be changed by you. The same secret key that unlocks a lever can be used to split the plastic lid. In case you have any inquiries, watch this video. Never throw away a dead battery. Wherever you go, carry it with you to purchase the button battery replacement. These are frequently on hand at pharmacies, hardware stores, home improvement centers, and other similar establishments. On your old battery is printed the precise type of button battery. Don’t put those in your trash or the recycling since they should go in a dedicated bin for recycling.
For a 2008 Prius, how much does a new battery cost?
Depending on the style, manufacturer, and grade you select, replacement batteries for Toyota Prius 2008 might cost anywhere between $200 and $270.
How many batteries are there in a Toyota Prius from 2008?
The Toyota Prius is typical among hybrid vehicles in having two batteries. a considerably larger high voltage hybrid system battery and a smaller 12-volt auxiliary battery.
When the hybrid system is not in Ready Mode, the 12V serves to start the car and to power the computer and accessories. Instead of powering the engine as you might anticipate, a hybrid’s 12V battery powers the computer, relays, ECU, and other components. The hybrid battery is actually the one who does the labor-intensive work of starting the engine. The 12V battery also serves to lessen the hybrid battery’s needless consumption by giving power to:
- Headlights
- audio devices
- the use of computers
- auxiliary systems
A few safety features are also offered by the 12V battery. The high voltage hybrid battery can be separated from the rest of the system when the car is not in ready mode thanks to the 12V. Therefore, in the event of an accident, the 12V helps reduce the likelihood of excessive voltage getting into the wrong places.
These 12V auxiliary batteries can be found either under the hood or in the trunk, depending on your vehicle’s make and model. Typically, they are built out of lead-acid or absorbed glass mat (AGM).
How is a 2008 Prius key fob programmed?
1. Open the driver-side door, then take the key and remote out of the ignition.
2. Twice insert and remove the key or remote from the ignition hole.
3. DOUBLE-CLOSE and DOUBLE-OPEN the driver-side door.
4. Twice insert and remove the key or remote from the ignition slot.
5. DOUBLE-CLOSE and DOUBLE-OPEN the driver-side door.
6. Twice insert and remove the key or remote from the ignition.
7. Insert the key or remote into the ignition slot, then shut the driver-side door.
8. To turn the ignition ON and OFF TWICE, push the POWER button (an amber LED).
9. EXIT the ignition slot with the key or remote. The door locks will cycle twice on the vehicle in response, signifying successful entry into programming mode.
10. Press and hold the Lock and Unlock buttons on the programming remote for 1.5 seconds before releasing. Push the lock button as soon as you let go; do not hold. The vehicle will then cycle its door locks once to verify that the key and remote programming was successful. (If it cycles two times, the key or remote was not properly programmed, and you must start over.)
11. If there are still remotes to program after step 7, repeat step 7. Otherwise, move on to step 9.
12. The programming is finished.
Want a professional to configure the remote for you since you’re having problems doing it yourself? Find a qualified key fob installer in your neighborhood by typing your city or zip code in the search box below.
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Should I reprogramme my key fob after changing the battery?
A remote key fob needs to be associated with your vehicle particularly in order to be secure.
This stops people who drive the same make and model of automobile as you from using their remote to access your car. You’ll need to reprogram the fob if changing the batteries has erased this connection or if it was somehow disrupted in order for it to once again recognize your automobile.
Standard programming sequence
Your key fob can typically be reconfigured by following this typical procedure:
Instead of starting and then returning to the locked position, turn the key into the run position. Repeat this multiple times.
You’ll typically hear a chime or other sound when you’ve cycled the key enough times. At that point, you can push the lock or unlock button on your key fob to hear another chime.
How long does the battery on a Prius key fob last?
The battery in your car’s fob or remote will eventually need to be replaced, just like any other battery. A car fob battery should typically last three to four years. In addition, there are several indicators that will let you know when your fob battery is running low.
Signal strength loss is the initial symptom. The majority of contemporary fobs can communicate with your car up to 50 feet away. But as your battery ages, the signal’s intensity and range will decline. Another indication that your key fob battery needs to be changed is that you are having to push buttons to lock and unlock doors repeatedly.
How long does the battery in a Toyota key fob last?
When your Toyota key fob’s battery is running lowthe typical battery life is one to two yearsan alert will sound when the engine is turned off.
Why won’t my Prius key work?
Make sure your key fob is functioning properly by testing it. If your car doesn’t react, check the connections to make sure they are clean and in contact with the battery before readjusting the battery. Your Toyota key fob might need to be reprogrammed if it still isn’t working.