OEM VDO is one of the largest OE providers in the world, supplying numerous vehicle brands, including BMW, with many of their genuine parts that build the vehicle before they ever reach the car lot. Replace your faulty sensor with a high quality OEM VDO sensor to restore normal operation. A faulty sensor can lead to improper fuel mixture and rough idle and poor performance and gas mileage. The mass air sensor/meter measures the volume of air being fed into the engine so that the fuel levels can be adjust for optimal performance. Replace the sensor and reassemble the vehicle following the above steps in reverse.Replacement mass air sensor for M52TU 2.5/2.8 and M54 2.5 engines.Remove the mass air flow sensor from the intake muffler lid.Using a T25 torx bit, remove the two screws securing the mass air flow sensor to the intake muffler lid. Remove the intake muffler lid from the vehicle.Use a flat blade screwdriver to loosen the hose clamp securing the intake pipe to the intake muffler lid.Using a metal pick, GENTLY lift the plastic retaining tab on the BMW mass air flow sensor plug.In most models, plastic latches hold the lid in place. Remove the lid from the intake muffler.It is located on the intake pipe just downstream of the intake muffler. Care should always be taken when disassembling your intake system.cracking a pipe or fitting can cause vacuum leaks. Section 1 - Replacing the N52 BMW MAF Sensor As mentioned above, the mass air flow sensor on the N52 engine is conveniently located on the air intake pipe next to the intake muffler (air filter housing).

E46 mass air flow sensor problems