Practice question

What is the purpose of the 'Battery Master Switch' (Batteriehauptschalter) when garaging a coach overnight?

To disconnect parasitic electrical loads, preventing battery discharge, and reducing electrical fire risks during unattended overnight parking
To dump all fuel out of the fuel tank
To deflate the air suspension bellows completely
To erase the digital tachograph records

Answer: A — To disconnect parasitic electrical loads, preventing battery discharge, and reducing electrical fire risks during unattended overnight parking

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