Audi Q3: Air Quality Sensor -G238-, Removing and Installing
Removing
- Remove the plenum chamber cover. Refer to
→ Body Exterior; Rep. Gr.50; Bulkhead; Plenum Chamber Cover,
Removing and Installing.
- Release the securing tab -4-
and turn the housing -1- for the
Air Quality Sensor -G238- counter-clockwise
-arrow-.
- Remove the housing from the rain water drain channel
-2- for the fresh air intake.
- Disconnect the connector -3-.
Note
Do not store a removed Air Quality Sensor -G238- in areas
where it can come into contact with solvents, fuels, and certain
chemical compositions (fluids or vapors).

Installing
Installation is done is reverse order, observe the
following:
Note
- So that no water enters into the A/C unit (heater) via the
rain water drain channel -1- when
the plenum chamber cover -2- is
installed, the plenum chamber cover must not be damaged.
- If the plenum chamber cover is damaged or is installed
incorrectly, water can flow into the fresh air intake duct via
the rain water drain channel.
- The plenum chamber cover must be completely engaged in the
windshield frame -3-. Refer to
→ Body Exterior; Rep. Gr.50; Bulkhead; Plenum Chamber Cover,
Removing and Installing.
- Install the plenum chamber cover. Refer to
→ Body Exterior; Rep. Gr.50; Bulkhead; Plenum Chamber Cover,
Removing and Installing.

READ NEXT:
Note
Complaints may arise regarding the Air Conditioning (A/C)
system regulation if there is a faulty measured value for the
Outside Air Temperature Sensor -G17-. Refer to Vehicle
Diag
Humidity Sensor -G355-, Removing and Installing, Vehicles without
Driver Assistance Systems Front Camera
Note
Only on vehicles with an automatic climate control system
There are diff
SEE MORE:
Description
Applies to: vehicles with side assist
Fig. 110 Driving situations and displays in the exterior mirror
General information
Side assist monitors the blind spot and traffic behind
your vehicle and provides assistance when
you are changing lanes. If the system detects an
object approaching
Radio -R-
1 - Connector AM/FM1 from the Antenna Amplifier -R24- (Radio
Antenna 2 -R93-)
2 - Connection block with four multi-pin connectors
Note
Unlisted connector terminals are not assigned.
2 - Connection Block with Four Multi-Pin Connectors
A - 8