Outside Air Temperature Sensor -G17-, Removing And Installing

WARNING: This page does not describe the selected car, but rather 23 other vehicles, including the 2017 Audi S5, 2017 Audi A5 Quattro, 2016 Audi S5, 2016 Audi A5 Quattro, and 2015 Audi S5. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The measured value of the Outside Air Temperature Sensor -G17- is evaluated by the Vehicle Electrical System Control Module -J519- and is transmitted via the Data Bus to the Climatronic Control Module -J255- A/C display and control head (and the Instrument Cluster Control Module -J285-) using the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.

The illustration shows the allocation of the Outside Air Temperature Sensor -G17- -A- on the Audi A5 Coupe, the Audi A5 Sportback, the Audi A4, Audi Q5, etc. The allocation can vary.

Fig 1: Identifying Outside Air Temperature Sensor

Courtesy of AUDI OF AMERICA, LLC

If the vehicle has an Outside Air Temperature Sensor -G17- -A- with the bracket -B- installed on the air intake grille above the impact member, it is possible that a higher temperature may register due to the component location of the Outside Air Temperature Sensor -G17- under certain operating conditions (because the radiator and condenser are radiating heat, for example on MY 2008 vehicles). In MY 2009, the component location of the Outside Air Temperature Sensor -G17- -A- has been moved as a running change. The Outside Air Temperature Sensor -G17- with the new bracket -C- have been move slightly forward (closer to the radiator grille) and is under the impact member -D-. Refer to the Parts Information.

If there is a complaint because the measured value is too high because the vehicle has the Outside Air Temperature Sensor -G17- -A- with the bracket -B- installed on the air intake grille above the impact member, then install an Outside Air Temperature Sensor -G17- -A- with the revised bracket -C- slightly forward (closer to the radiator grille) and under the impact member -D-. The wire connections may have to be lengthened. Refer to the Parts Information. The bracket -C- is clipped into the impact member -D-. It may be necessary to drill a 7 mm hole into the impact member -D-.

Removing And Installing:

-- Turn off the ignition.

-- Remove The Upper Lock Carrier Cover. Refer To LOCK CARRIER COVER, REMOVING AND INSTALLING / OVERVIEW - LOCK CARRIER .

-- Disconnect the connector -E- on the temperature sensor -A- and remove the temperature sensor from the bracket (-B- or -D-).

NOTE:

Depending on the vehicle equipment level, it may be necessary to remove the bumper in order to remove the Outside Air Temperature Sensor -G17- -A- from the bracket -C- installed under the impact member -D- (if, for example, the Outside Air Temperature Sensor -G17- is not accessible from above on vehicles with additional radiators).

-- After installing, check the DTC memory for the Climatronic Control Module -J255- display and control head (and the Instrument Cluster Control Module -J285-) and erase any faults, if necessary using the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.