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Standard Ignition AX203 Ambient Air Temperature SensorOE Quality 60-Day Returns
Part #: AX203

Standard Ignition AX203 Ambient Air Temperature Sensor

463 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: BMW, Mini, and Land Rover, 740i, 750i xDrive, Alpina B7, M5, X3, X5, X6, Cooper, 750i, 650i, M3, M6, 535i GT, 550i GT xDrive, 328i, 328i xDrive, 528i, 528i xDrive, 535i, 535i xDrive, 550i, Z4, 335i, 335i xDrive, 550i GT, 750Li, 750Li xDrive, 760Li, 128i, 135i, 335d, Range Rover, 328xi, 335xi, 528xi, 535xi, 525i, 525xi, 530i, 530xi, 325Ci, 325i, 325xi, 330Ci, 330i, 330xi, 760i, 545i, 645Ci, 745i, 745Li, 540i, Z8, 740iL, 750iL, 323Ci, 323i, and 328Ci
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Not what you need? See all Ambient Air Temperature Sensor options

Overview of Standard Ignition AX203 Ambient Air Temperature Sensor

The Standard Ignition AX203 Ambient Air Temperature Sensor is designed to provide accurate temperature readings for optimal HVAC system performance. Compatible with a range of BMW, Land Rover, and Mini models, this sensor helps maintain precise climate control and engine efficiency.

  • Direct replacement for OEM ambient air temperature sensors
  • Compatible with BMW 128i, 135i, 3 Series, 5 Series, 7 Series, M models, Land Rover Range Rover, and Mini Cooper
  • Ensures accurate ambient air temperature readings for HVAC and engine management
  • Durable construction for reliable long-term operation
  • Part number AX203 for easy identification and fitment

Product Details and Compatibility

The Standard Ignition AX203 Ambient Air Temperature Sensor is engineered to meet or exceed original equipment specifications. It is compatible with numerous BMW models including the 128i, 135i, 323Ci, 325i, 328i, 330i, 335i, 525i, 528i, 530i, 535i, 540i, 545i, 550i, 645Ci, 650i, 740i, 745i, 750i, 760i, M2, M3, M5, M6, X1, X3, X5, X6, Z4, and Z8. Additionally, it fits Land Rover Range Rover models and Mini Cooper vehicles. This sensor plays a critical role in providing ambient air temperature data to the vehicle’s HVAC system and engine control unit.

Function and Common Applications

  • Monitors outside air temperature for HVAC climate control accuracy
  • Supports engine management systems by providing ambient temperature data
  • Helps prevent incorrect temperature readings that can affect fuel efficiency
  • Resolves issues such as erratic HVAC operation or inaccurate temperature display
  • Addresses engine performance problems related to faulty ambient air temperature sensing

Installation Notes and Tips

Installation of the Standard Ignition AX203 sensor requires locating the existing ambient air temperature sensor, typically mounted near the front grille or bumper area. Disconnect the vehicle battery before installation to prevent electrical issues. Carefully unplug the old sensor and replace it with the AX203, ensuring a secure connection. Verify sensor operation by checking HVAC system response and temperature readouts after installation.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet strict quality standards and undergo rigorous testing to ensure durability and performance. The AX203 Ambient Air Temperature Sensor is backed by a limited warranty against defects in material and workmanship, providing confidence in its reliability for BMW, Land Rover, and Mini vehicles.

BrandStandard Ignition
Part NumberAX203
Attachment MethodPush On
ColorBlack
Connector GenderFemale
Connector ShapeOval
Connector TypePlug In
ContentsSensor
Mounting Bracket(s) IncludedNo
Terminal GenderMale
Terminal TypeBlade
Terminal TypePin
Wiring Harness IncludedNo

This part fits 463 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersPositionNotes
2022BMW740iN/A
2022BMW750i xDriveN/A
2022BMWM5N/A
2022BMWX3N/A
2022BMWX5N/A
2022MiniCooperN/A
2021BMW740iN/A
2021BMW750i xDriveN/A
2021BMWM5N/A
2021BMWX3N/A
2021BMWX5N/A
2021BMWX6N/A
2021MiniCooperN/A
2020BMW740iN/A
2020BMW750i xDriveN/A
2020BMWM5N/A
2020BMWX3N/A
2020BMWX5N/A
2020BMWX6N/A
2020MiniCooperN/A
2019BMW740iN/A
2019BMW750iN/A
2019BMW750i xDriveN/A
2019BMWM2N/A
2019BMWM5N/A
2019BMWX3N/A
2019BMWX5N/A
2019BMWX6N/A
2019MiniCooperN/A
2018BMW650iN/A
2018BMW740iN/A
2018BMW750iN/A
2018BMW750i xDriveN/A
2018BMWM2N/A
2018BMWM3N/A
2018BMWM5N/A
2018BMWM6N/A
2018BMWX1N/A
2018BMWX3N/A
2018BMWX5N/A
2018BMWX6N/A
2018MiniCooperN/A
2017BMW535i GTN/A
2017BMW550i GT xDriveN/A
2017BMW650iN/A
2017BMW740iN/A
2017BMW750iN/A
2017BMW750i xDriveN/A
2017BMWM2N/A
2017BMWM3N/A
2017BMWM6N/A
2017BMWX12.0LL4N/A
2017BMWX3N/A
2017BMWX5N/A
2017BMWX6N/A
2017MiniCooperN/A
2016BMW328iN/A
2016BMW328i xDriveN/A
2016BMW528iN/A
2016BMW528i xDriveN/A
2016BMW535iN/A
2016BMW535i GTN/A
2016BMW535i xDriveN/A
2016BMW550iN/A
2016BMW550i GT xDriveN/A
2016BMW650iN/A
2016BMW740iN/A
2016BMW750iN/A
2016BMW750i xDriveN/A
2016BMWM2N/A
2016BMWM3N/A
2016BMWM5N/A
2016BMWM6N/A
2016BMWX12.0LL4N/A
2016BMWX3N/A
2016BMWX5N/A
2016BMWX6N/A
2016BMWZ4N/A
2016MiniCooperN/A
2015BMW328iN/A
2015BMW328i xDriveN/A
2015BMW335iN/A
2015BMW335i xDriveN/A
2015BMW528iN/A
2015BMW528i xDriveN/A
2015BMW535iN/A
2015BMW535i GTN/A
2015BMW535i xDriveN/A
2015BMW550iN/A
2015BMW550i GTN/A
2015BMW550i GT xDriveN/A
2015BMW650iN/A
2015BMW740iN/A
2015BMW750iN/A
2015BMW750i xDriveN/A
2015BMW750LiN/A
2015BMW750Li xDriveN/A
2015BMW760LiN/A
2015BMWM3N/A
2015BMWM5N/A
2015BMWM6N/A
2015BMWX12.0LL4N/A
2015BMWX3N/A
2015BMWX5N/A
2015BMWX6N/A
2015BMWZ4N/A
2015MiniCooperN/A
2014BMW328iN/A
2014BMW328i xDriveN/A
2014BMW335iN/A
2014BMW335i xDriveN/A
2014BMW528iN/A
2014BMW528i xDriveN/A
2014BMW535iN/A
2014BMW535i GTN/A
2014BMW535i xDriveN/A
2014BMW550iN/A
2014BMW550i GTN/A
2014BMW550i GT xDriveN/A
2014BMW650iN/A
2014BMW740iN/A
2014BMW750iN/A
2014BMW750i xDriveN/A
2014BMW750LiN/A
2014BMW750Li xDriveN/A
2014BMW760LiN/A
2014BMWM5N/A
2014BMWM6N/A
2014BMWX3N/A
2014BMWX5N/A
2014BMWX6N/A
2014BMWZ4N/A
2014MiniCooperN/A
2013BMW128iN/A
2013BMW135iN/A
2013BMW328iN/A
2013BMW328i xDriveN/A
2013BMW335iN/A
2013BMW335i xDriveN/A
2013BMW528iN/A
2013BMW528i xDriveN/A
2013BMW535iN/A
2013BMW535i GTN/A
2013BMW535i xDriveN/A
2013BMW550iN/A
2013BMW550i GTN/A
2013BMW550i GT xDriveN/A
2013BMW650iN/A
2013BMW740iN/A
2013BMW750iN/A
2013BMW750i xDriveN/A
2013BMW750LiN/A
2013BMW750Li xDriveN/A
2013BMW760LiN/A
2013BMWM3N/A
2013BMWM5N/A
2013BMWM6N/A
2013BMWX3N/A
2013BMWX5N/A
2013BMWX6N/A
2013BMWZ4N/A
2013MiniCooperN/A
2012BMW128iN/A
2012BMW135iN/A
2012BMW328iN/A
2012BMW328i xDriveN/A
2012BMW335iN/A
2012BMW335i xDriveN/A
2012BMW528iN/A
2012BMW528i xDriveN/A
2012BMW535iN/A
2012BMW535i GTN/A
2012BMW535i xDriveN/A
2012BMW550iN/A
2012BMW550i GTN/A
2012BMW550i GT xDriveN/A
2012BMW650iN/A
2012BMW740iN/A
2012BMW750iN/A
2012BMW750i xDriveN/A
2012BMW750LiN/A
2012BMW750Li xDriveN/A
2012BMW760LiN/A
2012BMWM3N/A
2012BMWM6N/A
2012BMWX3N/A
2012BMWX5N/A
2012BMWX6N/A
2012BMWZ4N/A
2012MiniCooperN/A
2011BMW128iN/A
2011BMW135iN/A
2011BMW328iN/A
2011BMW328i xDriveN/A
2011BMW335dN/A
2011BMW335iN/A
2011BMW335i xDriveN/A
2011BMW528iN/A
2011BMW535iN/A
2011BMW535i GTN/A
2011BMW535i xDriveN/A
2011BMW550iN/A
2011BMW550i GTN/A
2011BMW550i GT xDriveN/A
2011BMW740iN/A
2011BMW750iN/A
2011BMW750i xDriveN/A
2011BMW750LiN/A
2011BMW750Li xDriveN/A
2011BMW760LiN/A
2011BMWM3N/A
2011BMWX3N/A
2011BMWX5N/A
2011BMWX6N/A
2011BMWZ4N/A
2011MiniCooperN/A
2010BMW128iN/A
2010BMW135iN/A
2010BMW328iN/A
2010BMW328i xDriveN/A
2010BMW335dN/A
2010BMW335iN/A
2010BMW335i xDriveN/A
2010BMW528iN/A
2010BMW528i xDriveN/A
2010BMW535iN/A
2010BMW535i GTN/A
2010BMW535i xDriveN/A
2010BMW550iN/A
2010BMW550i GTN/A
2010BMW550i GT xDriveN/A
2010BMW650iN/A
2010BMW750iN/A
2010BMW750i xDriveN/A
2010BMW750LiN/A
2010BMW750Li xDriveN/A
2010BMW760LiN/A
2010BMWM3N/A
2010BMWM5N/A
2010BMWM6N/A
2010BMWX3N/A
2010BMWX5N/A
2010BMWX6N/A
2010BMWZ4N/A
2010MiniCooperN/A
2009BMW128iN/A
2009BMW135iN/A
2009BMW328iN/A
2009BMW328i xDriveN/A
2009BMW335dN/A
2009BMW335iN/A
2009BMW335i xDriveN/A
2009BMW528iN/A
2009BMW528i xDriveN/A
2009BMW535iN/A
2009BMW535i xDriveN/A
2009BMW550iN/A
2009BMW650iN/A
2009BMW750iN/A
2009BMW750LiN/A
2009BMW760LiN/A
2009BMWM3N/A
2009BMWM5N/A
2009BMWM6N/A
2009BMWX3N/A
2009BMWX5N/A
2009BMWX6N/A
2009BMWZ4N/A
2009Land RoverRange RoverN/A
2009MiniCooperN/A
2008BMW128iN/A
2008BMW135iN/A
2008BMW328iN/A
2008BMW328xiN/A
2008BMW335iN/A
2008BMW335xiN/A
2008BMW528iN/A
2008BMW528xiN/A
2008BMW535iN/A
2008BMW535xiN/A
2008BMW550iN/A
2008BMW650iN/A
2008BMW750iN/A
2008BMW750LiN/A
2008BMW760LiN/A
2008BMWM3N/A
2008BMWM5N/A
2008BMWM6N/A
2008BMWX3N/A
2008BMWX5N/A
2008BMWX6N/A
2008BMWZ4N/A
2008Land RoverRange RoverN/A
2008MiniCooperN/A
2007BMW328iN/A
2007BMW328xiN/A
2007BMW335iN/A
2007BMW335xiN/A
2007BMW525iN/A
2007BMW525xiN/A
2007BMW530iN/A
2007BMW530xiN/A
2007BMW550iN/A
2007BMW650iN/A
2007BMW750iN/A
2007BMW750LiN/A
2007BMW760LiN/A
2007BMWM5N/A
2007BMWM6N/A
2007BMWX3N/A
2007BMWX5N/A
2007BMWZ4N/A
2007Land RoverRange RoverN/A
2007MiniCooperN/A
2006BMW325CiN/A
2006BMW325iN/A
2006BMW325xiN/A
2006BMW330CiN/A
2006BMW330iN/A
2006BMW330xiN/A
2006BMW525iN/A
2006BMW525xiN/A
2006BMW530iN/A
2006BMW530xiN/A
2006BMW550iN/A
2006BMW650iN/A
2006BMW750iN/A
2006BMW750LiN/A
2006BMW760iN/A
2006BMW760LiN/A
2006BMWM3N/A
2006BMWM5N/A
2006BMWM6N/A
2006BMWX3N/A
2006BMWX5N/A
2006BMWZ4N/A
2006Land RoverRange RoverN/A
2006MiniCooperN/A
2005BMW325CiN/A
2005BMW325iN/A
2005BMW325xiN/A
2005BMW330CiN/A
2005BMW330iN/A
2005BMW330xiN/A
2005BMW525iN/A
2005BMW530iN/A
2005BMW545iN/A
2005BMW645CiN/A
2005BMW745iN/A
2005BMW745LiN/A
2005BMW760iN/A
2005BMW760LiN/A
2005BMWM3N/A
2005BMWX3N/A
2005BMWX5N/A
2005BMWZ4N/A
2005Land RoverRange RoverN/A
2005MiniCooperN/A
2004BMW325CiN/A
2004BMW325iN/A
2004BMW325xiN/A
2004BMW330CiN/A
2004BMW330iN/A
2004BMW330xiN/A
2004BMW525iN/A
2004BMW530iN/A
2004BMW545iN/A
2004BMW645CiN/A
2004BMW745iN/A
2004BMW745LiN/A
2004BMW760iN/A
2004BMW760LiN/A
2004BMWM3N/A
2004BMWX3N/A
2004BMWX5N/A
2004BMWZ4N/A
2004Land RoverRange RoverN/A
2004MiniCooperN/A
2003BMW325CiN/A
2003BMW325iN/A
2003BMW325xiN/A
2003BMW330CiN/A
2003BMW330iN/A
2003BMW330xiN/A
2003BMW525iN/A
2003BMW530iN/A
2003BMW540iN/A
2003BMW745iN/A
2003BMW745LiN/A
2003BMW760LiN/A
2003BMWM3N/A
2003BMWM5N/A
2003BMWX5N/A
2003BMWZ4N/A
2003BMWZ8N/A
2003Land RoverRange RoverN/A
2003MiniCooperN/A
2002BMW325CiN/A
2002BMW325iN/A
2002BMW325xiN/A
2002BMW330CiN/A
2002BMW330iN/A
2002BMW330xiN/A
2002BMW525iN/A
2002BMW530iN/A
2002BMW540iN/A
2002BMW745iN/A
2002BMW745LiN/A
2002BMWM3N/A
2002BMWM5N/A
2002BMWX5N/A
2002BMWZ8N/A
2002MiniCooperN/A
2001BMW325CiN/A
2001BMW325iN/A
2001BMW325xiN/A
2001BMW330CiN/A
2001BMW330iN/A
2001BMW330xiN/A
2001BMW525iN/A
2001BMW530iN/A
2001BMW540iN/A
2001BMW740iN/A
2001BMW740iLN/A
2001BMW750iLN/A
2001BMWM3N/A
2001BMWM5N/A
2001BMWX5N/A
2001BMWZ8N/A
2000BMW323CiN/A
2000BMW323iN/A
2000BMW328CiN/A
2000BMW328iN/A
2000BMW528iN/A
2000BMW540iN/A
2000BMW740iN/A
2000BMW740iLN/A
2000BMW750iLN/A
2000BMWM5N/A
2000BMWX5N/A
2000BMWZ8N/A
1999BMW323iSedanN/A
1999BMW328iN/A
1999BMW528iN/A
1999BMW540iN/A
1999BMW740iN/A
1999BMW740iLN/A
1999BMW750iLN/A
1998BMW528iN/A
1998BMW540iN/A
1998BMW740iN/A
1998BMW740iLN/A
1998BMW750iLN/A
1997BMW528iN/A
1997BMW540iN/A
1997BMW740iN/A
1997BMW740iLN/A
1997BMW750iLN/A
1996BMW740iLN/A
1996BMW750iLN/A
1995BMW740iN/A
1995BMW740iLN/A
1995BMW750iLN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

17-15112AAT00025S12719658101411996581690513372-1300573067777601780706024738902-020ATSA17NSC000030TS57329V20-72-0061WT5639

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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