Disconnecting car battery has a lot of risks (Photo Source: Pexels)įor many drivers who do not know this term, adaptive memory has the adjustments the PCM has learned from the beginning of time. To be more precise, when you disconnect the battery, the car will lose the voltage to the PCM (also known as Powertrain Control Module), causing it to forget the adaptive memory setting in the KAM (Keep Alive Memory) chip. The biggest issue when disconnecting the battery on any car that has computerized engine controls is loss of memory. The Risk When Disconnecting or Replacing Car BatteryĮven though the risk will depend on the make, model, type and year of the vehicle, we gather the most common problems that car owners will face when replacing or disconnecting car batteries. For that reason, our car experts will help you understand the risk and problems when disconnecting or replacing a car battery. They just only realize it after they have performed the task. To be more specific, car owners cannot find any battery manufacturers warning signs for customers, as well as telling about possible dangers of replacing or disconnecting a battery. Apart from shock hazards warnings on high voltage hybrid batteries, there are no warnings anywhere. Many car designers and carmakers underestimate the danger of battery disconnect issues. For that reason, we need to proceed with caution when performing this task. The loss of power accessory functions like sunroof, door windows and seats is also related to the car battery disconnect or replacement. From electronic modules damage, false warning lights to loss of air conditioning. The reason for this is that there might be various issues related.

Normally, we drivers do not want to disconnect or replace the car battery by ourselves.

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