- First of all, turn the ignition key of the BMW car to the accessory position once the lights and radio are on. You have to do this before starting the vehicle.
- Again, press the “Trip” button and hold until Reset appears.
- Then, press the same button for the third time.
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How do I reset my BMW 328i after replacing the battery?

Do I need to reprogram my BMW after changing the battery?
Apart from the registration procedure, you also have to code your BMW computer. It’ll be necessary each time you replace your battery, no matter its specifications – whether your battery is similar or extremely different from your old one.
Do BMW batteries need to be programmed?
All the newer BMW models are equipped with what BMW calls Intelligent Battery Sensors, or IBS, and therefore require battery registration.
How do I register my 2011 BMW battery?

Do car need to reprogram after changing battery?
Under normal circumstances, you don’t need to do anything else other than keep driving the car after resetting the computer. The ECU will eventually relearn its ideal settings and reprogram itself with use.
What needs to be reset after changing battery?
- Detach the battery cable for two to three minutes.
- Reconnect the battery and start the car.
- Drive the car for at least 10 miles to let the engine control units find any potential problems.
What happens if you don’t reset a BMW battery?
If you don’t register it with the car, it causes the car to charge it too much or too little. Older batteries get more charge sent to it than newer ones, so putting a new battery in will cause the car to overcharge it, which prematurely kills your battery.
What happens if BMW battery is not registered?
If the battery replacement is not registered, the power management will not function properly and can lead to functions being limited by individual electrical consumers being switched off or having their power consumption reduced.
Can AutoZone test a BMW battery?
Every AutoZone in the USA will check your alternator, starter, or battery at no charge.
What happens if you don’t code a car battery?
Without battery coding, the car’s battery management system won’t work correctly and some vehicle functions will cease. The worst case scenario is that the vehicle may not even start.
Do I need to code a new battery?
If a battery is advanced in age, the vehicle system records the โdefective battery”. If a new battery is installed without entering a BEM code, the vehicle will not recognise that a new battery has been installed.
Can I put any battery in a BMW?
Conventional car batteries can be used for BMWs with average power requirements. Therefore, you don’t need a specific BMW car battery if your car doesn’t have sophisticated car accessories or a start-stop system.
Why do you need to register a new battery?
If a new battery is not registered, the charging current of the alternator is not adjusted correctly. As a result, the new battery is not charged properly. This may result in premature failure.
Why is my car acting weird after a new battery?
The only reason why the car acts a bit “Weird” is because it is relearning various fuel trims. Removing the battery resets the fuel trims which means the ECM has to relearn these.
Do you really need a memory saver when changing car battery?
“They are not effective or worth the risk. I-CAR also teaches not to use them.” Jeff Peevy, I-CAR’s director of field operations, concurred. “A memory saver can complete circuits that removing the battery opens in order to protect the system, and so a memory saver could put systems at risk,” Peevy said.
Why won’t my car start after replacing the battery?
Other potential culprits might include a defective fuel injector, faulty spark plugs, a bad starter, starter relay or solenoid, a defective fuel pump, a problem with the timing belt or a clogged fuel filter. The problem could even be in the ignition switch on the steering column.
Do I need to reset the ECU after replacing the battery?
Most ECUs are self-learning and should reset themselves after learning that a new battery has been installed. If you’re stuck, go to a mechanic for diagnostic assistance.
Will disconnecting battery reset BMW?

How long does it take for a car computer to reset after disconnecting the battery?
You should leave your car’s battery disconnected for a minimum of fifteen minutes and no longer than thirty minutes to reset an ECU. To disconnect a car battery, remove the negative power cable from the negative terminal of your car battery with the use of a socket or monkey wrench.
Will disconnecting the battery reset the computer?
While disconnecting the battery is the most common method of resetting your computer, it’s not always the best way. That’s because disconnecting the car battery causes your computer to lose its memory. So, things like your preset radio stations, shift points, and your car’s ideal fuel/air mixture are forgotten.
How do you reset the computer on a BMW 328i?
However, if you service your own vehicle but are unsure of how to reset the computer system, follow these steps below to assist you. Turn the key to the ON position without starting the vehicle. Press and HOLD the ODOMETER button for TEN seconds. It is located to the far bottom LEFT of the Instrument Cluster.
How much does a BMW 328i battery cost?
The average cost for a BMW 328i battery replacement is between $504 and $530. Labor costs are estimated between $97 and $122 while parts are priced at $408. This range does not include taxes and fees, and does not factor in your specific model year or unique location.
How do I know if my BMW needs a new battery?
- Dimming headlights.
- More frequent need for engine revving or jump starts.
- Takes longer to start the engine when you turn the key/push the button.
- Unusual power fluctuations.
Will AutoZone install my battery if I buy it there?
Yes, AutoZone installs batteries. Not only does AutoZone sell batteries, but they can install them, too, in most cases. If your car’s battery is dead, won’t hold a charge, or if your car won’t start, it may be time for a new battery.