040307
Practice
Mock
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EV/Hybrid & Emerging
High-voltage awareness, hybrid systems, EV regulations.
Q 1 / 50
ev-hybrid-emerging
L2
Why is opening a traction battery pack to repair individual cell modules generally not a Level 3 light-vehicle task?
A
Because it requires specific HV-qualified competence, manufacturer-approved equipment and a controlled environment beyond the L3 awareness scope
B
Because the cells inside the pack are held under negative pressure that vents irreversibly the moment the housing seal is broken
C
Because the pack is welded shut at the factory and there is no documented way to open the casing in the field at all
D
Because lithium cells can only legally be replaced by the original cell manufacturer under sealed-batch traceability arrangements
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