General Studies · Engine Cooling System
In which safety condition should a vehicle radiator pressure cap be opened to prevent serious burn injuries?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1When the coolant temperature gauge shows maximum heat
- 2Only when the engine is completely cool✓
- 3Immediately after a long drive when the engine is hot
- 4While the engine is running
Correct answer
Only when the engine is completely cool
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