Check the brake pedal position sensor wiring and rest position. If needed renew the sensor. Thermostat map cooling is a failed heater coil on thermostat. Renew the thermostat. Oil level sensor problem is more cosmetic. Renew the sensor on the next oil change.

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E39 530dA -02 M-Sport Messing metallic
E53 X5 3.0dA -06 Sport Stratus grey
E70 X5 40d -12 M-Sport Space grey