The electrical system of the present day model of BMWs is so complicated that it ensures a closer chrging as possible to all type and age of the battery. There is a computer program that is intended to run and control the alternator. After you have replaced the battery, the BMWs computer is supposed to know about the changing. Therefore the software of equipment needs to be informed on the updated vehicle from a stsndard Lead Acid Battery to AGM, Absorbent Glass Mat type and the reason is that it stores the electric energy different from the primary battery.
The process of updating the computer controlled alternator is what is referred to as battery resetting. assuming the battery registration processes or failing to reset the computer after battery charge won’t trigger the Diagnostic Trouble Code (DTC) and (MIL) Malfunction Indicator Lamp. However, the vehicle users must be warned of the danger of skipping the BMW computer battery change that can result to shortening the life of the battery in the vehicle. In addition to that, it can damage the entire components of the electrical system.
BMW’s primary reason for developing the new way of regulating the charging performance by reset of BMW computer after battery change is all about improving the engine performance of the vehicle. Unlike many people who think that the company is intended to make more sales, longer life batteries or protecting the car owner’s wallet.
Many BMW automotive shops have experienced diagnosis issues by customers who fail to reset and install the BMW computer after battery change in less than a year. The normal charging system of the vehicle usually reduce the life of unregistered batteries by allowing an aggressive battery charge especially in a cold weather condition and also damages the control unit.
In contrast with Lead Acid batteries, the AGM battery does not hold the sulfuric acid freely in its casing. The acid is instead bound into the fiber fleece glass. It is for such a reason that no acid escapes in case the housing is damaged. Moreover, the AGM battery is air tight sealed to prevent water entrance.
Resetting the BMW computer after battery change does the following tasks;
Informs the computer that the new battery registration has been successful
Ensures that the car battery registers an 80% of the capacity as a reference point
Ensures that the Current Odometer readings are stored
Enables battery storage statics such as battery temperature, current, voltage and charge levels are deleted.
The following versions of BMWs require computer reset after Battery Change
2002 and newer 7-Series E65/E66 chassis
2007 and newer X5 E70 chassis
2003 and newer 6-Series E54/E63 chassis
2005 and newer X5 E53 chassis with N62 engine
2008 and newer X6 E71 chassis
2006 and newer 3-Series E90/E91/E92/E93 chassis
2004 and newer 5-Series E60/E61 chassis
In conclusion, you should never gamble with resetting the BMW computer after the battery change. The procedures are cost effective and will ensure you enjoy the pleasures of a BMW car. Many reputable BMW motor shops are equipped with training to ensure proper registration of your vehicle battery ensuring that the manufacturer’s warranty standards are met.