There is a 6-cell 12-volt lead acid battery in your BMW E46.
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AGM batteries were first used by the E46, but they are optional. You can purchase a group 95R used Bosch, Excite, BMW, Benz, or Volvo battery. Given the size of the battery compartment, it can accommodate a larger battery if that is the best used battery you can locate.
Using the original BMW battery, which costs between $500 and $900, with an older vehicle is not financially viable.
BMW 3 Series replacement car battery (E46)
A significant component of a vehicle’s electrical system is the car battery. In all, it gathers electrical energy, which powers the vehicle’s electric-powered components. Therefore, having a battery that is in perfect operating order is important. However, a car battery is a limited resource that will eventually run out irrevocably. More specifically, the battery’s internal chemical processes will lose their efficiency in producing electricity. A battery’s lifespan is limited to 3 to 5 years, after which it will no longer be able to be charged. When this occurs, installing a new battery should be taken into consideration. It’s possible that the battery’s energy will be lost as a result of dirty connection points. A battery’s terminals may experience corrosion over time, leading to poor connection connections. This is the cause of the battery’s inability to receive alternator recharges. It will eventually run out of power and stop producing electricity. Cleaning the dirt out of the battery and cable connection points may restore the battery to its original condition, making it usable again. If the car is left idle for a few weeks or more, the battery may become discharged. In this situation, a battery recharge may help it regain its efficiency. You will require a battery charger in order to begin a recharge.
Batteries that work best with the BMW 3 Series:
*Note: If more than one battery type is appropriate for your model, compare the specifications of the battery that is already installed in your car to those in the table below before selecting the best one.
Wear reliable gloves and safety goggles before replacing the batteries.
The following equipment will be required: “Flat-head” and “Phillips” type screw drivers, as well as 10 and 13 mm wrenches or sockets.
The battery for the BMW 3 Series (E46) is situated under the right trim in the trunk (1).
Release “1” and “2” on the plastic bolts to remove the battery cover:
Disconnect the negative connection on the old battery before removing it to begin replacing it. By doing this, unintentional short circuits between the positive battery terminal and the car’s body will be avoided. Make sure the cable does not make touch with the battery terminals when changing the battery. The minus (-) sign next to the negative battery connector serves as a visual cue (1):
Release bolts “2” and “3” before releasing screw “1” to remove the battery brackets:
1. Remove the positive terminal cover:
sever the positive cable:
Disconnect the battery’s venting hose (1):
Lifting an old battery incorrectly might cause back injury because the battery is hefty.
Before installing the new battery in the car’s battery compartment, do not remove the plastic terminal caps.
To guarantee optimal contact, if necessary, clean battery wires of any corrosion or debris before joining.
Instead of unplugging the battery, connect the cables, beginning with the positive terminal.
It’s fairly easy to change the battery in a BMW E46, saving you the trouble of making an unneeded trip to the mechanic.
A battery change is among the simplest fixes you can make to your BMW E46 3 series vehicle. Lifting the battery into and out of the car is actually the most difficult portion of the repair. But oddly enough, a lot of BMW E46 owners still get their cars repaired for a new battery.
As certain as death and taxes, our car batteries inevitably degrade. The lifespan of a vehicle battery is typically six years, though variations are unavoidable. Long-term exposure to extreme heat or cold, as well as frequent charging, jumping, and electrical loads while the car isn’t running, will significantly reduce the life of your BMW’s battery (cell phones left plugged in, leaving an interior light on, etc.).
The clever battery sensor was not included in the production of the BMW E46 3 series vehicle (IBS). If you carry out this operation, you DO NOT need to register your battery.
Includes thorough part diagrams, part numbers, and links to buy all necessary parts to do this repair.
A 9% pure lead AGM battery with twice the power and three times the lifespan of standard batteries.
Only lead-acid batteries with a voltage of 6 or 12 volts, including WET, MF, AGM, and GEL kinds, are intended for use with this Schwaben battery charger. Use not recommended for widely found appliance dry cell batteries. Charging voltage auto selection is a charger feature. Selectable Charge rate, eight LED indications, Overcharging is not a concern, and short circuit and overheating are both protected.
- The BMW E46 3 series’ battery is situated beneath the black plastic tray on the right (passenger) side of the trunk. To access the battery, remove the plastic tray.
- Use a 10mm socket wrench to pry the two battery terminals apart to start the BMW E46 battery replacement process by removing the negative terminal first. To prevent any minor shocks, hold a rag in your palm when you remove the negative terminal.
What size battery is required for a BMW E90?
The 90/720 AH/CCA battery is what most US Market E90 use. Your vehicle utilizes the 90/720 battery if you have a CIC or a business radio with Bluetooth. On the negative cable, it will also have the battery monitor terminal. The 90/720 BMW battery’s current part number is “810.”
What kind of battery does a BMW 323i have?
Either the H7 or T6 battery group is available for the BMW 323i. For dimensions, refer to the table below.
(1) Battery group codes made up of letters and numbers are used by the Battery Council International (BCI) (ie. H6, T4, 24, 34r). These refer to the size of battery that will fit a certain vehicle the best (in terms of physical dimensions, terminal positions, and kind).
What batteries can I get from BMW?
The BMW auto batteries you use should be compatible with your current model. BCI Group 94 49 H8 batteries are used in the majority of BMW automobiles, including those in the X3, X5, 3, 5, and 7 series. Given that they have nearly identical size, these batteries can also be used interchangeably.
The typical lifespan of an automotive battery for a BMW is three to five years. Your battery’s lifespan can be impacted by a variety of elements, including temperature, battery type, design, specifications, and driving practices.
Intelligent Battery Sensors are a feature of newer BMW cars, particularly those introduced after 2002. To prevent problems in the future, you must register your battery.
You can typically locate the battery and replace it on your own because it is a simple procedure. Just keep in mind that you will need to use a scanner equipment to register your BMW if it is a later model. Additionally, confirm that the new battery has virtually identical specifications to the old one.
Regrettably, you won’t be able to start your BWM if the battery dies. By utilizing jumper cables to link it to a healthy battery from another automobile, you can try jump-starting the battery. The vehicle can be jump-started from the front even if the battery is at the back.
Can any battery be installed in a BMW?
Modern, late-model BMW batteries must be “registered” or matched to the onboard ECU for optimum operation and battery longevity, which is a frequently overlooked and underappreciated requirement. You might be asking why this is essential, and some online armchair experts could even argue that it isn’t really necessary and is just a way for the service provider to make more money by replacing the batteries. Some people turn to buying a new battery from an auto parts store, installing it themselves, and quickly learning that their battery needs to be replaced, again, in order to avoid the additional cost of registering their BMW battery.
Is a BMW battery required for my BMW?
I’ve only used my BT once, so I’m unsure. Any shop who tells you otherwise should not be working on your car. You don’t need a bmw battery, but you do absolutely need to register; else, you’ll probably have to buy a second battery and learn the hard way.
Where is the BMW 3 Series battery?
The engine compartment does not include the 3 Series battery; it is located in the boot. Remove the floor panel from the boot by raising it. The battery is concealed by a plastic battery cover with three fasteners on the right side of the boot.
How can I reset my BMW now that the battery has been changed?
One of the vehicles with the most advanced intelligent operating system in the world is the BMV. Therefore, the first thing you must do after every hit or replacement of an object in the car is to restart the entire vehicle.
This setup enables the computer to anticipate your next replacement requirement and alert you to it. After changing the battery, resetting the BMW computer is a quick and easy process.
- First, turn on the controller again.
- Step 2: Press “Trip” to activate it and make it light.
- Step 3: Hold down the “trip” button while continuing to press and hold it until the “Reset” button shows up on the screen.
- Reset in Step 4
How can I tell if the battery in my BMW is AGM?
With factory genuine BMW batteries, it is quite easy to identify the battery type: a white battery denotes a conventional lead acid battery, whereas a black battery denotes an AGM (Boron-Silicate absorbed glass mat)
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.
What occurs if a BMW battery is not programmed?
The car will overcharge or undercharge you if you don’t register it with it. When you install a new battery, the automobile will overcharge it since older batteries receive more charge than fresh ones, which causes your battery to die sooner.
What is a car battery of the AGM type?
The upgraded lead-acid battery known as AGM, or absorbent glass mat, offers superior power to satisfy the greater electrical demands of contemporary automobiles and start-stop applications.
AGM batteries are completely sealed, nonspillable, and exceptionally vibration-resistant. They also require no maintenance. When compared to traditional lead-acid batteries, AGM delivers superior cycling performance, less gassing, and less acid leakage.
Superior life performance is the ultimate result of all of AGM technology’s advantages.