Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 553

– When mounting the adjuster, the operating lever -5- must en‐

gage into the vent door lever -6- in the middle.

Tightening Specifications
♦ Refer to 

⇒ “4.1 Overview - Heater and A/C Unit”, page 72

♦ Overview - instrument panel. Refer to ⇒  Body Interior; Rep.

Gr.  70 ; Instrument Panel; Overview - Instrument Panel .

7.10.2

Front Air Distribution Door Adjuster, Re‐

moving and Installing, Climatronic

Removing
– Remove the instrument panel. Refer to ⇒  Body Interior; Rep.

Gr.  70 ; Instrument Panel; Instrument Panel, Removing and

Installing .

– Remove the defroster vent air guide. Refer to

⇒ “5.11 Air Guide for Defrost Air Vent, Removing and Instal‐

ling”, page 120

 .

– Remove the air distribution door motor. Refer to

⇒ “7.8  Front Air Distribution Door Motor V426 with Air Distri‐

bution Door Motor Position Sensor G642 , Removing and

Installing”, page 143

 .

– Carefully remove the operating lever -5- -arrow-.
– Remove the bolts -1, 2 and 6-.
– Remove the adjuster -7- upward.

Installing
– Install in reverse order of removal. Note the following:

Note

♦

Check the function of the doors and linkage before installing.

♦

Check if the lever and shafts are seated correctly in the

mounts.

– Check if the gears correlate correctly with one another.
• The square tooth -2- must engage into the gap -3- on the

toothed gear -1-.

– When mounting the adjuster, the operating lever -3- must en‐

gage into the vent door lever -4- in the middle.

Tightening Specifications
♦ Refer to 

⇒ “4.1 Overview - Heater and A/C Unit”, page 72

♦ Overview - instrument panel. Refer to ⇒  Body Interior; Rep.

Gr.  70 ; Instrument Panel; Overview - Instrument Panel .

8

Additional Components for Control

and Regulation

⇒ “8.1  Sunlight Photo Sensor G107 , Removing and Installing”,

page 150
⇒ “8.2  Air Quality Sensor G238 , Removing and Installing”, page

151
⇒ “8.3 Function of Air Quality Sensor G238 ”, page 151
⇒ “8.4  Outside Air Temperature Sensor G17 , Removing and

Installing”, page 153
⇒ “8.5  A/C Humidity Sensor G260 , Removing and Installing”,

page 153
⇒ “8.6  Left Vent Temperature Sensor G150 , Removing and In‐

stalling”, page 153
⇒ “8.7  Right Vent Temperature Sensor G151 , Removing and

Installing”, page 154
⇒ “8.8  Footwell Vent Temperature Sensor G192 , Removing and

Installing”, page 155

8.1

Sunlight Photo Sensor - G107- , Remov‐

ing and Installing

Special tools and workshop equipment required
♦ Trim Removal Wedge - 3409-
Removing
– Unclip Sunlight Photo Sensor - G107- -1- in the direction of the

-arrow- out of the instrument cluster.

– Disconnect the connector.
Installing
– Install in reverse order of removal.

8.2

Air Quality Sensor - G238- , Removing

and Installing

Note

♦

The Air Quality Sensor - G238- is only installed on vehicles

with climatronic.

♦

The Air Quality Sensor - G238- is installed at the right front on

the intake air grille in the plenum chamber.

♦

The Air Quality Sensor - G238- contains a highly sensitive

electronic component that can be damaged if it comes in direct

contact with solvents, fuels or chemicals.

♦

Do not install a sensor that has been kept, for example, in a

tool box.

♦

Do not store removed sensors in areas where they can come

into contact with solvents, fuels and certain chemical compo‐

sitions (fluids or vapors).

Removing
– Remove the fresh air intake cover. Refer to

⇒ “5.3 Fresh Air Intake Cover, Removing and Installing”, page

115

 .

– Release the securing tab -2- downward.
– Pull the Air Quality Sensor - G238- -1- in direction of -arrow-.
– Disconnect the connector.

Note

Do not store a removed Air Quality Sensor - G238- in areas where

they can come into contact with solvents, fuels, and certain chem‐

ical compositions (fluids or vapors).

Installing
– Install in reverse order of removal. Note the following:
– Check the Diagnostic Trouble Code (DTC) memory and erase

any displayed entries using the Vehicle Diagnostic Tester in

the “Guided Fault Finding” function.

Tightening Specifications
♦ Bulkhead; overview - plenum chamber cover. Refer to ⇒  Body

Exterior; Rep. Gr.  50 ; Bulkhead; Plenum Chamber Cover,

Removing and Installing .

8.3

Function of Air Quality Sensor - G238-

♦ Sensor for air quality detects pollutants in the ambient air

(mostly gasoline and/or diesel fumes).

♦ The Climatronic Control Module - J255- evaluates the signal

from the Air Quality Sensor - G238- . The Air Conditioning (A/

C) system is activated depending on the strength and type of

heavily polluted air.

At an outside temperature above approximately 2 °C (35.6 °F) the

recirculating air mode is switched on when there is only a slight

increase in pollutants in the ambient air.