GM has announced a fix related to post-crash battery fires for existing Volts & future production:
- structural reinforcement
- a battery coolant level sensor (to detect leaks)
- a seal for the coolant filler to prevent over-filling (which could presumably defeat the sensor)
Quote:
GM conducted four successful crash tests between Dec. 9 and 21 of Volts with the structural enhancement. The enhancement performed as intended. There was no intrusion into the battery pack and no coolant leakage in any of the tests.
“These enhancements and modifications will address the concerns raised by the severe crash tests,” Barra said. “There are no changes to the Volt battery pack or cell chemistry as a result of these actions. We have tested the Volt’s battery system for more than 285,000 hours, or 25 years, of operation.
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source, GM:
GM Announces Enhancements to Chevrolet Volt