What issues can arise from a malfunctioning Mass Air Flow Sensor on the BMW 335i, and how does the hot-film air mass meter function?

N55 engines utilize a Siemens SIMAF GT2 hot-film air mass meter, which features planar metal resistors on glass, offering high vibration resistance, improved accuracy across all operating temperatures, and reduced sensitivity to air pulsations and moisture. The intake air temperature sensor is integrated into the mass air flow sensor and functions as an NTC thermistor that receives a 5-volt reference current and ground from the ECM. A malfunctioning air flow sensor can lead to issues such as difficulty restarting the engine when hot, the engine starting and then stalling, or the engine only running when the accelerator pedal is depressed.

How to replace the mass air flow sensor in six cylinder engine on BMW X3?

To remove the mass air flow sensor here are steps to follow, Turn off the car engine and also remove the key. On the left front of the engine compartment at the air filter housing, remove the clip and disconnect the electric connector of the mass airflow sensor. Subsequently, unbolt the connectors and pull out the mass air flow sensor out of the housing. Ensure that there is no leaks and cracks on the intake ducts and also check for vacuum leaks. Such installation is always done in reverse and it is always a point of checking the O-ring and replacing the same in case it is damaged. After reinstallation a person should always read and erase all the fault codes from the ECM memory.

What is the function and troubleshooting process for a hot film mass air flow sensor on BMW X5?

The hot film mass air flow sensor sends a varying voltage (approximately 0.5 - 4.5 vdc) to the ECM, representing the measured intake air, with the air mass input signal produced using an electrically heated metal film in the air flow stream. The DME main relay provides the operating voltage to the air flow sensor, and as air flows through, the film is cooled, requiring additional current to maintain a constant temperature, which forms the basis for the input signal. In the absence of an output signal from the air flow sensor, the ECM relies on throttle position and engine rpm inputs to operate the engine, while a faulty sensor triggers the MIL. Common issues with a faulty air flow sensor include difficulty restarting when the engine is hot, stalling after starting, and running only with the accelerator pedal depressed. To address this, switch the ignition OFF and remove the key, then work at the left front of the engine compartment at the air filter housing by detaching the mass air flow sensor electrical connector, loosening the air duct clamp, releasing clips from the air filter housing, and removing the MAF sensor. If the air flow sensor is to be reused, visually inspect it for damage, missing parts, or blockages, and check the intake ducts for cracks and vacuum leaks. Installation follows the reverse order of removal, and for ease, lubricate the large rubber O-ring seal in the air filter housing with assembly lubricant, ensuring all hoses and seals are properly seated. Finally, check for DTCs and clear and reset the ECM memory.

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72 Mass Air Flow Sensors found

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BMW Mass Air Flow Sensor
Part Number: 13627567451
$571.82 MSRP: $748.18
You Save: $176.36 (24%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor
- Replaces: 13-62-1-438-871
Fits the following BMW Models:
- 330Ci | 2001-2006 | Convertible(E46), Coupe(E46)
- 330i | 2001-2005 | Sedan(E46)
- 330xi | 2001-2005 | Sedan(E46)
- 530i | 2001-2003 | Sedan(E39)
- X5 | 2001-2006 | 3.0i(E53)
- Z3 | 2001-2002 | Coupe(E36), Roadster 3.0L(E36)
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BMW Mass Air Flow Sensor
Part Number: 13627602038
$313.95 MSRP: $497.76
You Save: $183.81 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor
Fits the following BMW Models:
- 228i | 2014-2016 | Convertible N20 Engine(F23), Convertible N26 Engine(F23), Coupe N20 Engine(F22), Coupe N26 Engine(F22), N20 Engine(F22), N26 Engine(F22)
- 228i xDrive | 2015-2016 | Convertible N20 Engine(F23), Convertible N26 Engine(F23), Coupe N20 Engine(F22), Coupe N26 Engine(F22)
- 320i | 2013-2018 | Sedan(F30)
- 320i xDrive | 2013-2018 | Sedan(F30)
- 328i | 2012-2016 | N20 Engine(F30), N26 Engine(F30), Sedan N20 Engine(F30), Sedan N26 Engine(F30), Wagon(F31)
- 328i GT | 2013-2015 | F34
- 328i GT xDrive | 2014-2016 | N20 Engine(F34), N26 Engine(F34)
- 328i xDrive | 2013-2016 | Sedan N20 Engine(F30), Sedan N26 Engine(F30), Sedan(F30), Wagon(F31)
- 428i | 2014-2016 | Convertible N20 Engine(F33), Convertible N26 Engine(F33), Convertible(F33), Coupe N20 Engine(F32), Coupe N26 Engine(F32)
- 428i Gran Coupe | 2015-2016 | N20 Engine(F36), N26 Engine(F36)
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BMW Mass Air Flow Sensor
Part Number: 13621432356
$512.48 MSRP: $670.55
You Save: $158.07 (24%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor
Fits the following BMW Models:
- 320i | 2001-2005 | Sedan(E46)
- 323Ci | 2000 | Convertible(E46), Coupe(E46)
- 323i | 1999-2000 | Sedan(E46), Wagon(E46)
- 325Ci | 2001-2006 | Convertible(E46), Coupe M54 Engine(E46), Coupe(E46)
- 325i | 2001-2005 | Sedan M54 Engine(E46), Sedan(E46), Wagon M54 Engine(E46), Wagon(E46)
- 325xi | 2001-2005 | Sedan(E46), Wagon(E46)
- 328Ci | 2000 | Coupe(E46)
- 328i | 1999-2000 | Sedan(E46)
- 525i | 2001-2003 | Sedan(E39), Wagon(E39)
- 528i | 1997-2000 | Sedan(E39), Wagon(E39)
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BMW Mass Air Flow Sensor
Part Number: 13627593624
$298.98 MSRP: $474.04
You Save: $175.06 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor
Fits the following BMW Models:
- 135i | 2010-2013 | Convertible N55 Engine(E88), Convertible(E88), Coupe N55 Engine(E82), Coupe(E82)
- 335i | 2011-2013 | Convertible(E93), Coupe(E92), Sedan(E90)
- 335i xDrive | 2011-2013 | Coupe(E92), Sedan(E90)
- 528i | 2010-2011 | Sedan(F10)
- 535i | 2010-2016 | Sedan(F10)
- 535i GT | 2010-2017 | F07
- 535i GT xDrive | 2011-2017 | F07
- 535i xDrive | 2011-2016 | Sedan(F10)
- 640i | 2012-2018 | Convertible(F12), Coupe(F13)
- 640i Gran Coupe | 2013-2019 | F06
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BMW Mass Air Flow Sensor
Part Number: 13628605565
$313.95 MSRP: $497.76
You Save: $183.81 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor
Fits the following BMW Models:
- 230i | 2017-2021 | 4 Cyl 2.0 L GAS, Convertible(F23), Coupe(F22)
- 230i xDrive | 2017-2021 | 4 Cyl 2.0 L GAS, Convertible(F23), Coupe(F22)
- 330e | 2016-2018 | Sedan(F30)
- 330i | 2017-2018 | Sedan(F30)
- 330i GT xDrive | 2017-2019 | F34
- 330i xDrive | 2017-2019 | Sedan(F30), Wagon(F31)
- 340i | 2016-2018 | Sedan(F30)
- 340i GT xDrive | 2017-2019 | F34
- 340i xDrive | 2016-2018 | Sedan(F30)
- 430i | 2017-2020 | Convertible(F33), Coupe(F32)
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BMW Mass Air Flow Sensor
Part Number: 13627520519
$298.98 MSRP: $474.04
You Save: $175.06 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor
Fits the following BMW Models:
- 323i | 2006 | Sedan(E90)
- 325i | 2006 | Sedan(E90)
- 325xi | 2006 | Sedan(E90), Wagon(E91)
- 330i | 2006 | Sedan(E90)
- 330xi | 2006 | Sedan(E90)
- 525i | 2004-2007 | Sedan(E60)
- 525xi | 2006-2007 | Sedan(E60)
- 530i | 2004-2007 | Sedan(E60)
- 530xi | 2006-2007 | Sedan(E60), Wagon(E61)
- Z4 | 2006-2008 | Coupe 3.0si(E86), Roadster 3.0i(E85), Roadster 3.0si(E85)
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BMW Mass Air Flow Sensor
Part Number: 13627551638
$298.98 MSRP: $474.04
You Save: $175.06 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Intake Temperature Sensor, Air Mass Sensor
Fits the following BMW Models:
- 128i | 2008-2013 | Convertible N51 Engine(E88), Convertible N52 Engine(E88), Coupe N51 Engine(E82), Coupe N52 Engine(E82)
- 323i | 2007-2011 | Sedan(E90)
- 328i | 2007-2013 | Convertible N51 Engine(E93), Convertible N52 Engine(E93), Coupe N51 Engine(E92), Coupe N52 Engine(E92), Sedan N51 Engine(E90), Sedan N52 Engine(E90), Wagon(E91)
- 328i xDrive | 2009-2013 | Coupe N51 Engine(E92), Coupe N52 Engine(E92), Sedan N51 Engine(E90), Sedan N52 Engine(E90), Wagon(E91)
- 328xi | 2007-2008 | Coupe N51 Engine(E92), Coupe N52 Engine(E92), Sedan N51 Engine(E90), Sedan N52 Engine(E90), Wagon(E91)
- 528i | 2008-2009 | Sedan(E60)
- 528i xDrive | 2009-2010 | Sedan(E60)
- 528xi | 2008 | Sedan(E60)
- X3 | 2007-2010 | 3.0si(E83)
- X5 | 2007-2010 | 3.0si(E70), xDrive30i(E70)
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BMW Mass Air Flow Sensor
Part Number: 13627566984
$571.82 MSRP: $748.18
You Save: $176.36 (24%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor
- Replaces: 13-62-7-513-957
Fits the following BMW Models:
- 325Ci | 2001-2006 | Convertible(E46), Coupe M54 Engine(E46), Coupe(E46)
- 325i | 2001-2005 | Sedan M54 Engine(E46), Sedan(E46), Wagon M54 Engine(E46), Wagon(E46)
- X3 | 2004-2005 | 2.5i(E83)
- Z4 | 2003-2005 | 2.5i(E85)
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BMW Mass Air Flow Meter Sensor
Part Number: 13628506408
$298.98 MSRP: $474.04
You Save: $175.06 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor, Mass Air Flow Sensor
Fits the following BMW Models:
- 328d | 2014-2018 | Sedan(F30)
- 328d xDrive | 2014-2018 | Sedan(F30), Wagon(F31)
- X3 | 2015-2017 | xDrive28d(F25)
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BMW Mass Air Flow Sensor
Part Number: 13628658527
$298.98 MSRP: $474.04
You Save: $175.06 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor
- Replaces: 13-62-7-613-234
Fits the following BMW Models:
- 550i | 2014-2016 | Sedan(F10)
- 550i GT | 2013-2015 | F07
- 550i GT xDrive | 2013-2017 | F07
- 550i xDrive | 2014-2016 | Sedan(F10)
- 650i | 2013-2018 | Convertible(F12), Coupe(F13)
- 650i Gran Coupe | 2013-2019 | F06
- 650i xDrive | 2013-2018 | Convertible(F12), Coupe(F13)
- 650i xDrive Gran Coupe | 2013-2019 | F06
- 750Li | 2013-2015 | Sedan(F02)
- 750Li xDrive | 2013-2015 | Sedan(F02)
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BMW Mass Air Flow Sensor
Part Number: 13621747155
$586.83 MSRP: $767.82
You Save: $180.99 (24%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor
- Replaces: 13-62-1-468-624
Fits the following BMW Models:
- 325i | 1992-1995 | Convertible(E36), Sedan(E36)
- 325is | 1991-1995 | Coupe(E36)
- 525i | 1991-1995 | M50 Engine(E34), Sedan(E34), Wagon(E34)
- 525iT | 1993 | Wagon(E34)
- 530i | 1994-1995 | Sedan(E34), Wagon(E34)
- M3 | 1995-1996 | Coupe(E36)
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BMW Mass Air Flow Sensor
Part Number: 13621702078
$586.83 MSRP: $767.82
You Save: $180.99 (24%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor
- Replaces: 13-62-1-468-625
Fits the following BMW Models:
- 540i | 1997-2003, 1994-1995 | Sedan(E34), Sedan(E39)
- 740i | 1997-2001, 1993-1995 | Sedan(E32), Sedan(E38)
- 740iL | 1993-2001 | Sedan(E32), Sedan(E38)
- 840Ci | 1994-1997 | Coupe(E31)
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BMW Mass Air Flow Sensor
Part Number: 13627804150
$298.98 MSRP: $474.04
You Save: $175.06 (37%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor
Fits the following BMW Models:
- 535d | 2014-2016 | Sedan(F10)
- 535d xDrive | 2014-2016 | Sedan(F10)
- 740Ld xDrive | 2015 | Sedan(F02)
- X5 | 2014-2018 | xDrive35d(F15)
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BMW Mass Air Flow Sensor
Part Number: 13628583496
$313.95 MSRP: $497.76
You Save: $183.81 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor
Fits the following BMW Models:
- 228i Gran Coupe | 2021-2024 | 4 Cyl 2.0 L GAS
- 228i xDrive Gran Coupe | 2020-2024 | 4 Cyl 2.0 L GAS, F44
- 230i | 2022-2025 | 4 Cyl 2.0 L GAS
- 230i xDrive | 2023-2025 | 4 Cyl 2.0 L GAS
- 330e | 2021-2024 | 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- 330e xDrive | 2021-2024 | 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- 330i | 2019-2025 | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV), Sedan(G20)
- 330i xDrive | 2019-2025 | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV), Sedan(G20)
- 430i | 2021-2025 | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- 430i Gran Coupe | 2022-2024 | 4 Cyl 2.0 L GAS
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BMW Mass Air Flow Sensor
Part Number: 13627566983
$512.48 MSRP: $670.55
You Save: $158.07 (24%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor
- Replaces: 13-62-7-513-956
Fits the following BMW Models:
- 325Ci | 2003-2006 | Coupe M56 Engine(E46)
- 325i | 2003-2005 | Sedan M56 Engine(E46), Wagon M56 Engine(E46)
- 330Ci | 2001-2006 | Convertible(E46), Coupe(E46)
- 330i | 2001-2005 | Sedan(E46)
- X3 | 2004-2006 | 2.5i(E83), 3.0i(E83)
- Z4 | 2003-2005 | 3.0i(E85)
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BMW Mass Air Flow Sensor
Part Number: 13627547981
$859.27 MSRP: $1121.55
You Save: $262.28 (24%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Exchange-Mass Air Flow Sensor; Air Mass Sensor
- Replaces: 13-62-1-466-349, 13-62-1-286-064
Fits the following BMW Models:
- 535i | 1985-1993 | Sedan(E28), Sedan(E34)
- 635CSi | 1985-1989 | Coupe(E24)
- 735i | 1985-1992 | Sedan(E23), Sedan(E32)
- 735iL | 1988-1992 | Sedan(E32)
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BMW Mass Air Flow Sensor
Part Number: 13627612746
$298.98 MSRP: $474.04
You Save: $175.06 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor
Fits the following BMW Models:
- 335i | 2012-2015 | Sedan(F30)
- 335i GT xDrive | 2014-2016 | F34
- 335i xDrive | 2013-2015 | Sedan(F30)
- 435i | 2014-2016 | Convertible(F33), Coupe(F32)
- 435i Gran Coupe | 2015-2016 | F36
- 435i xDrive | 2014-2016 | Convertible(F33), Coupe(F32)
- 435i xDrive Gran Coupe | 2015-2016 | F36
- ActiveHybrid 3 | 2013-2015 | Sedan(F30)
- M2 | 2016-2018 | Coupe(F87)
- M235i | 2014-2016 | Convertible(F23), Coupe(F22)
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BMW Mass Air Flow Sensor
Part Number: 13621271704
$867.06 MSRP: $1134.48
You Save: $267.42 (24%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Volume Air Flow Sensor
Fits the following BMW Models:
- 528i | 1979-1981 | Sedan(E12)
- 633CSi | 1978-1984 | Coupe(E24)
- 733i | 1978-1984 | Sedan(E23)
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BMW Mass Air Flow Sensor
Part Number: 13627613234
$298.98 MSRP: $474.04
You Save: $175.06 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hot-Film Air Mass Meter
- Replaced by: 13628658527
Fits the following BMW Models:
- Alpina B6 xDrive Gran Coupe | 2015-2019 | F06
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BMW Mass Air Flow Sensor
Part Number: 13621433567
$309.20 MSRP: $490.24
You Save: $181.04 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hot-Film Air Mass Meter; Air Mass Sensor
Fits the following BMW Models:
- 540i | 1997-2003 | Sedan(E39), Wagon(E39)
- 740i | 1997-2001 | Sedan(E38)
- 740iL | 1996-2001 | Sedan(E38)
- Alpina V8 Roadster | 2003 | Roadster(E52)
- X5 | 2000-2003 | 4.4i(E53), 4.6is(E53)
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BMW Mass Air Flow Sensor

The mass air flow sensor is designed to measure the amount of the air an engine takes in. As we all know, the prefect ration for oxygen and gas in the engine is 14.7:1, so it does some damage to your engine either the ratio is too high or too low. The mass air flow sensor read how much air coming into the engine and sends this information to computer, and the computer calculates the proper amount of the fuel needed for the highest engine performance. It is common for mass air flow sensor get dirty and get failing, so pay attention on your mass air flow sensor is any symptom happen as following: if the Check Engine Light is on; if your BMW car doesn't have power; if there is an excessive fuel consumption; if your BMW car fails at starting. Save your money by ordering a BMW genuine OEM mass air flow sensor here with a discounted price and change it by yourself.

BMW Mass Air Flow Sensor Parts Questions & Experts Answers

Mass Air Flow Sensor
13627593624
Q: What issues can arise from a malfunctioning Mass Air Flow Sensor on the BMW 335i, and how does the hot-film air mass meter function?
A:
N55 engines utilize a Siemens SIMAF GT2 hot-film air mass meter, which features planar metal resistors on glass, offering high vibration resistance, improved accuracy across all operating temperatures, and reduced sensitivity to air pulsations and moisture. The intake air temperature sensor is integrated into the mass air flow sensor and functions as an NTC thermistor that receives a 5-volt reference current and ground from the ECM. A malfunctioning air flow sensor can lead to issues such as difficulty restarting the engine when hot, the engine starting and then stalling, or the engine only running when the accelerator pedal is depressed.
Mass Air Flow Sensor
13627551638
Q: How to replace the mass air flow sensor in six cylinder engine on BMW X3?
A:
To remove the mass air flow sensor here are steps to follow, Turn off the car engine and also remove the key. On the left front of the engine compartment at the air filter housing, remove the clip and disconnect the electric connector of the mass airflow sensor. Subsequently, unbolt the connectors and pull out the mass air flow sensor out of the housing. Ensure that there is no leaks and cracks on the intake ducts and also check for vacuum leaks. Such installation is always done in reverse and it is always a point of checking the O-ring and replacing the same in case it is damaged. After reinstallation a person should always read and erase all the fault codes from the ECM memory.
Mass Air Flow Sensor
13627567451
Q: What is the function and troubleshooting process for a hot film mass air flow sensor on BMW X5?
A:
The hot film mass air flow sensor sends a varying voltage (approximately 0.5 - 4.5 vdc) to the ECM, representing the measured intake air, with the air mass input signal produced using an electrically heated metal film in the air flow stream. The DME main relay provides the operating voltage to the air flow sensor, and as air flows through, the film is cooled, requiring additional current to maintain a constant temperature, which forms the basis for the input signal. In the absence of an output signal from the air flow sensor, the ECM relies on throttle position and engine rpm inputs to operate the engine, while a faulty sensor triggers the MIL. Common issues with a faulty air flow sensor include difficulty restarting when the engine is hot, stalling after starting, and running only with the accelerator pedal depressed. To address this, switch the ignition OFF and remove the key, then work at the left front of the engine compartment at the air filter housing by detaching the mass air flow sensor electrical connector, loosening the air duct clamp, releasing clips from the air filter housing, and removing the MAF sensor. If the air flow sensor is to be reused, visually inspect it for damage, missing parts, or blockages, and check the intake ducts for cracks and vacuum leaks. Installation follows the reverse order of removal, and for ease, lubricate the large rubber O-ring seal in the air filter housing with assembly lubricant, ensuring all hoses and seals are properly seated. Finally, check for DTCs and clear and reset the ECM memory.

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