TheCats
Well-Known Member
The 12V battery must have enough capacity to run the emergency flashers for several hours, even if the motive system (e.g. the traction battery) fails.Except for the contracts Ford has with suppliers (to keep the cost down), I don't see the need for a 12V with the cranking power designed for a V8 engine either.
While shaving ounces, they missed an obvious one. Couldn't a few 5 oz. laptop batteries do the job (and be owner-serviceable)? It DOES have the heaviest IRS on the planet for back-up.
This capability and the exact time required varies by local regulations. Ever where the regulation doesn't explicitly exist there may be manufacturer liability exposure. Imagine a lawyer arguing to a jury that it's a common and common-sense safety measure that every other manufacturer has, skipped to save a few dollars.
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