- Add more shielding around the Chevy Volt's battery cage to strengthen it against being pierced in the case of an accident.
- Installation of a battery coolant reservoir sensor.
- Installation of a bracket on top of the reservoir to prevent coolant overfill.
GM to Strengthen Chevy Volt Battery Pack in Response to NHTSA Investigation
Late last year, the National Highway Traffic Safety Administration announced that one of its Chevrolet Volts had caught on fire during testing. The fire was later traced to the electric car's battery system. Neither the federal agency nor Chevy-owner General Motors issued any recall, both maintaining that the EV is safe, and opted to continue investigation into the matter. Today, General Motors updated the press about several enhancements on the Chevrolet Volt to prevent the NHTSA-caused battery fires. To recap, the Chevrolet Volt battery fires were induced when the hatchback, after a simulated side impact crash, was rotated for several minutes at a time to simulate a (unrealistic) slow car roll, then left parked with engine fluids and battery pack un-drained for days, if not weeks. (Also unrealistic. Who leaves a damaged car in a garage for such a period of time?) Leaking coolant around the Volt's battery system would then make contact with the battery's circuit board, spark, and cause the fire. GM announced it will be modifying all current and future Chevrolet Volts in the U.S. and abroad by:
It was the best of times, it was the worst of times.