BMW VEHICLE: THE SERVICE ENGINE SOON (MIL) LAMP IS ILLUMINATED AND A POWER REDUCTION IS CLEARLY PERCEPTIBLE. THIS SITUATION MAY OCCUR AFTER DRIVING FOR SOME TIME WITH THE ENGINE ALREADY AT FULL OPERATING TEMPERATURE. IF THE IGNITION IS CYCLED, THE ENGINE THEN USUALLY PERFORMS NORMALLY. *PE UPDATED 2/7/11. *PE UPDATED ON 06/09/2011. *KB UPDATED 8/10/11. *PE UPDATED 1/11/13. *PE
