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How to reset BMW computer after battery change?

How to reset BMW computer after battery change? – The electrical system of the current model of BMW is very complicated, making it as close as possible to all types and ages of batteries.

There is a computer program to operate and control the alternator. After replacing the battery, BMW’s computer should know about that change. Therefore, the software of the equipment needs to be notified from the lead storage battery to the AGM, the absorptive glass mat type for the updated vehicle, because the electric energy different from the main battery is stored.

The process of updating the computer controlled alternator is what is called battery reset. If the battery registration process has not been completed even after the battery has been charged, the DTC (Diagnostic Trouble Code) and (MIL) fault indicator light will not be triggered unless the computer is reset. However, it is necessary to warn the vehicle user about the risk of skipping BMW computer’s battery change, which may shorten the vehicle’s battery life. In addition, it can damage the entire components of the electrical system.

The main reason for developing a new method to reset the BMW computer after replacing the battery and adjust the charging performance is to improve the engine performance of the vehicle. The company is different from many people who think that it is intended to protect the wallet of more sales, long life battery or car owner.

How to reset BMW computer after battery change?

In many BMW car dealers, diagnostic problems have occurred in less than a year, unless the BMW computer is reset and installed after replacing the battery. The normal charging system of the vehicle reduces the lifetime of unregistered batteries and also damages the control unit by enabling aggressive battery charging especially in cold weather.

In contrast to lead-acid batteries, AGM batteries do not hold sulfuric acid freely within the casing. Instead, the acid binds to the glass of the fiber fleece. For this reason, the acid will not escape when the housing is damaged. In addition, the AGM battery is hermetically sealed to prevent water intrusion.

When you reset the BMW computer after replacing the battery, the following work is done.

Notify the computer that the new battery registration was successful
Ensure that the car battery registers 80% of the capacity as a reference point
Ensure that the reading of the current odometer is stored.

Battery available statistics such as temperature, current, voltage, charge level etc are deleted. The next version of BMW needs to reset the computer after battery replacement

  • Seven series E65 / E66 chassis since 2002
  • 2007 and the new X5 E70 chassis
  • 6 series E54 / E63 chassis since 2003
  • 2005 and the new X5 E53 chassis with N5 engine
  • 2008 and the new X6 E71 chassis
  • 2006 and the new 3 series E90 / E91 / E92 / E93 chassis
  • 5 series E60 / E61 chassis since 2004

In conclusion, you should never bet by resetting the BMW computer after replacing the battery. The procedure is cost effective and you can enjoy the pleasure of BMW cars. Many reputable BMW motor shops are equipped with training that guarantees adequate registration of automobile batteries, so manufacturer’s warranty criteria are met.


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