Air Quality Sensor -G238- /Humidity Sensor In Fresh Air Intake Duct -G657-, Removing And Installing: Notes

WARNING: This page is about a different variant/trim than selected.

NOTE:

Different versions depending on the vehicle date of manufacture and A/C system version ("Basis" or "Convenience"). Refer to AIR QUALITY SENSOR -G238-, FUNCTION .

The Air Quality Sensor -G238- is only installed on vehicles with the "Convenience" A/C system.

The Humidity Sensor in Fresh Air intake Duct -G657- is only installed on vehicles from MY 2012 as a running change. Refer to AIR QUALITY SENSOR -G238-, FUNCTION .

The Air Quality Sensor -G263- /Humidity Sensor in Fresh Air intake Duct -G657- are highly sensitive electronic components that can get damaged if they come in direct contact with solvents, fuels or chemicals (for example, impurities may enter through area -A-). Therefore, never install an Air Quality Sensor -G238- /Humidity Sensor in Fresh Air intake Duct -G657- that was stored, for example, in a tool box.

Fig 1: Identifying Air Quality Sensor G238

Courtesy of AUDI OF AMERICA, LLC

Following removal, do not set down the Air Quality Sensor -G238- /Humidity Sensor in Fresh Air intake Duct -G657- in areas where it could come into contact with solvents, fuels or certain chemical compounds (liquids or vapors).

There are different versions of the Air Quality Sensor -G238- /Humidity Sensor in Fresh Air intake Duct -G657- with different functions, therefore pay attention to the correct version. Refer to the Parts Information.