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Home >> BMW >> 2016 >> Z4 sDrive35is >> Repair and Diagnosis >> External Pages >> Different car >> Section 374 (General Electrical System - Repair) >> Safety And General Information >> 61 00... Instructions for disconnecting and connecting battery >> Before disconnecting battery

Before disconnecting battery

WARNING: This page is about a different car, the 2013 BMW Z4, 2012 BMW Z4, 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

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 leads: 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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