Quote:
Originally Posted by snik
Sounds like the same thing that some E53, 39, 38s have that can warm the cabin using the aux timer setup that's on the radio.
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I know some cars have a "REST" function that uses residual engine heat and the aux. water pump to pump hot coolant through the heater core when the engine is not running (but has been recently).
This is NOT that - it's entirely different. It heats the coolant directly.
