That seems annoying. Fortunately, replacing the battery in a key fob for a BMW 328i is not too difficult. Here’s how to go about it:
- Start by pressing and holding the little button at the key fob’s base. You can do this to take the metal key off of your key fob.
- Find a small hole by feeling around the key fob’s edge. Use your metal key or a small flathead screwdriver to remove the key fob’s back plate off.
- Remove the old battery with care. You must orient your new battery in the same direction as your old one, so be sure to take note of where the negative and positive terminals are located.
- Put the key fob’s fresh battery in there. As you do this, try to avoid touching the terminals because doing so could shorten the key’s battery life.
- Replace the back panel last. The two parts should click together when they are joined properly. After that, you may test out your new key fob batteries by inserting the metal key.
Why not use the extra time to explore your options for auto insurance using the Jerry app while you’re changing the battery in your car remote? Simply download the app, respond to a few short questions, and you’ll see a list of affordable estimates from companies like Nationwide and Safeco.
In This Article...
Can I change the battery in my BMW key myself?
Although the battery in this key is not intended to be changed, it can be done by cutting the casing apart and soldering a new battery. You’ll need a VL2020 battery to swap out this BMW key battery. The manufacturer does not advise performing this operation.
How much does a new BMW key battery cost?
I recently visited the business. The key fob wouldn’t work to lock or unlock my car when I tried. My BMW key fob’s battery has to be changed.
In less than two minutes, find out if your auto insurance is being overcharged.
Batteries for key fobs typically last three to four years. Your current BMW key fob might need to be replaced, depending on the model.
You should replace the battery in your smart key or Comfort Access BMW key fob by following these simple instructions:
- Get a CR2032 battery from a department or auto store. It will cost you around $2 to buy it.
- By depressing the tab on your key fob, you can take the valet key off.
- To pry open your battery cover, use the key or a flathead screwdriver.
- Replace the old battery with the new one after removing the old one.
- Restore the key to its housing and close your key fob.
You have a non-comfort access key fob if you are unable to open it because it has an indent in the side. You must take a long drive to recharge your key fob battery because it can only be done through the ignition of your automobile.
Once the battery has been successfully replaced or recharged, make sure to test it by locking and unlocking the doors several times. To find out how much you can save on your auto insurance before you leave again, take a moment to glance at the Jerry app.
The Jerry app, a registered broker that provides end-to-end support, compiles reasonable rates, assists you in switching plans, and even assists you in terminating your old policy.
A BMW f30 key uses what kind of battery?
These days, metal keys are kind of a disappearing breed. Automakers are leaning more and more to making the plastic key fob into the genuine key. They get to get rid of the unattractive key while organizing what ends up in the pockets of customers. Even if you merely use the fob as a tool to open the door or as a key, a strong battery is essential.
The key fob was created by BMW to be the only tool required to remove the battery. A CR2450 battery is the one in concern. There will be a button on the back of the key if you turn it over to look at it. The key is visible when you press it and remove the top of the fob.
You can use the key you take out to unlock the door using a dead key fob. But you’ll also use it to take off the fob’s backing. There is a shallower area in the fob opposite the hole for the key. To unlock the backing of the key fob, insert the key into the shallower portion.
The battery is visible if you take off the fob’s backing. If you need a CR2450 battery right away, you may frequently find them in supermarkets and gas stations.
You may pry out the battery using a small tab that is located on the corner of the backing. Replace the lid after inserting the new battery with the positive side facing out.
Authored by:
owner of a 1973 Porsche 914 and a 1998 Impreza 2.5RS with a flat-six engine swap. only when opposing perspectives are horizontal.
Why won’t my BMW key fob function now that the battery has been changed?
A dead battery is the most frequent cause of a key fob not functioning. Having said that, your keyfob might be having more serious issues. You might require a key fob replacement or perhaps auto door lock repair if your key fob stops operating after a battery change.
What kind of battery is required for a BMW key fob?
A CR2032 battery is necessary for BMW key fob battery replacement for drivers who have BMW Comfort Access. To replace the battery in your BMW key fob, follow these steps: Remove the metal valet key by pushing in the little tab on the side of your key fob.
How much power does a BMW 328i key fob require?
The battery in your BMW key is a CR2032. the old BMW key fob batteries with care, then gently insert the new one after removing the key fob cover.
What occurs if the battery in your BMW key dies?
You won’t be able to use keyless entry or remote unlocking if your BMW has Comfort Access if the battery in your key fob has died. You can still enter and manually start your automobile, though.
Press and hold the key release button at the remote fob’s base while unlocking the door of your car, then slide out the internal key blade. This can be used in place of a standard key to unlock your car. You can locate a little hole on the bottom of the handle if the keyhole is hidden on your car door. Use the key blade to pry off the trim panel and expose the keyhole by inserting it into the hole.
Once you’re inside, put your remote key fob in the ignition slot or, if your car doesn’t have one, press it up against the steering column’s key markings. If your key fob dies, you will still be able to start your BMW using the start/stop button on the dashboard.
Can a BMW battery be replaced without reprogramming?
Let’s first focus on what BMW battery registration genuinely is before delving into the procedure. Battery registration, to put it simply, is the process of notifying your car that a brand-new battery has been installed. Importantly, it must be done every time you replace the battery in your BMW, model year 2002 or later.
The car adapts the amount of energy required to recharge to operate at peak levels as your battery ages and gradually loses its ability to charge. The battery needs more charging the older it is. By registering your battery, you can inform your engine control module (also referred to as DME — Digital Motor Electronics) that a new one has been installed. As a result, the vehicle will reset the old battery statistics and won’t attempt to overcharge the new battery under the assumption that the old one is still in place.
In addition to registering, you must also code your BMW computer. No matter how different or similar your new battery is from your previous one in terms of specifications, it will still be necessary each time you change it.
If I change the battery, do I need to reprogram my key fob?
After changing the battery, you typically do not need to reconfigure the key fob. However, you might need to reprogramme it by re-pairing it with your vehicle if you’ve replaced not only the batteries but also some of the internal cabling and electronics.
What occurs when the battery in your key fob runs low?
The transmitter’s range decreases as the fob battery gets weaker. This implies that for the key fob to operate, you must be close to the vehicle. When a smart key fob is in your pocket or handbag for automobiles with push-button starts, the car might not always detect it if the battery is low.
How can I tell if the battery on my key fob is running low?
When the battery in the fob gets weaker, the transmitter’s range decreases. Your range is deteriorating if you find that you need to be much closer to your automobile than usual. This serves as a reminder to replace your battery. Other indications include:
- If your key doesn’t signal at all
- If you have to click the button several times before your car responds
- If your key remote behaves erratically or inconsistently
Will Mykey reset if the battery is disconnected?
Sadly, there isn’t a simple solution to this question because it much depends on the brand and type of your car. But you might be able to reset the key fob by briefly disconnecting and reconnecting your car’s battery.