On that year you might want to consider a spare ICM, only about 30$ chinese, instead of $650 original Bosch if you could even find it. Those things start being iffy then suddenly you have nothing - ever again. One way to kill the original unit is to high pressure spray the thermal paste out from behind it. Have you washed the engine bay? It fries the interior bits as that huge aluminum case is relying on dissipating heat to the body as designed.