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Home >> BMW >> 2015 >> 760Li >> Repair and Diagnosis >> Body & Frame >> Windows >> General Electrical System - Repair >> Battery >> 61 00... Notes for disconnecting and connecting battery >> Before disconnecting battery
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Before disconnecting battery

Turn off the ignition and other electrical loads/consumers to prevent sparking when reconnecting.

NOTE: If the ignition is not turned off when the battery is disconnected, fault memories may be set in some control units.
IMPORTANT:
  • There is a danger of mixing up battery cables: If the battery positive and negative leads are the same color and you are in doubt, follow the polarity to the battery, then mark and cover the leads.
  • The on-board computer and clock may lose your data.
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