W202 PSE PUMP LOCATION
tanks all
the sound youre hearing is the vacuum pump, which runs when you lock/unlock the doors because they run on the vacuum system.
youre talking about the lights not turning off until a short amount of time after turning the car off. im assuming youre talking about the fog lights. this is normal, its called convenience lighting. this only happens when you drive the car with the headlights on, then when you turn the car/headlights off and exit the car, the foglights will turn on for about 20 seconds... to light the way for you.
sounds to me like you dont have any problems... enjoy your amg



