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Why should air conditioning and electrical loads be checked before a heat wave trip?
- A.Electrical systems are unaffected by heat
- B.Air conditioning is only a comfort with no safety link
- C.Batteries only fail in winter
- D.A failed fan belt or charging problem can disable cooling and other systems at once, and marginal batteries often fail in extreme heat as well as cold
Correct answer
D. A failed fan belt or charging problem can disable cooling and other systems at once, and marginal batteries often fail in extreme heat as well as cold
Why
Heat stresses batteries, belts, and alternators, and a breakdown in extreme heat quickly becomes a driver-health problem too. Confirming charging voltage, belt condition, and cab cooling before the trip prevents a roadside emergency in dangerous temperatures.
Manual topic: Hot Weather - Electrical · From the General Knowledge practice bank (GK-327).