Removing and installing humidity sender G355 - vehicles with main beam assist — AUDI

Removing and installing
humidity sender
G355
- vehicles with main beam assist
WARNING
Safety hazard: the engine can start unexpectedly.
Before carrying out general work on a vehicle with high-voltage electrical system, switch off the ignition and remove the ignition key from the vehicle.
Note
Depending on the production period (gradual introduction from model year 2012 onwards) and the vehicle version, the
humidity sender
G355
may no longer be addressed as a component in the event memory. If there is a discrepancy for
G355
on such vehicles, the
rain and light sensor
G397
is indicated as the location of the fault
Vehicle diagnostic, testing and information system VAS 5051 ("Guided Fault Finding")
.
At the start of production, the
humidity sender
G355
was only fitted on vehicles with
“deluxe”
air conditioners. Since the introduction of the start/stop system (from model year 2010 onwards),
G355
is also fitted on vehicles with
“basic”
air conditioners (vehicles with start/stop system as optional extra).
From model year 2010 onwards, a different version of the
humidity sender
G355
is fitted (gradual introduction)
Electronic parts catalogue
. The removal and installation procedures for
G355
differ depending on the version. The removal and installation procedures for version
“1”
(fitted up to model year 2009, gradual discontinuation) are described below. For the removal and installation procedures for version
“2”
(fitted from model year 2010 onwards, gradual introduction) refer to
Electrical system
Rep. gr.
92
Windscreen wiper system; Removing and installing rain and light sensor
.
Removing (version
“1”
)
Remove interior mirror
General body repairs, interior
Rep. gr.
68
Interior mirror; Removing and installing interior mirror
.
Release retaining tabs
1
and
2
with a screwdriver
3
.
Disengage cover
4
at rear.
Release retaining tabs
arrows
and carefully fold cover
2
upwards slightly at top.
Disengage retaining tab
1
on cover
3
at front.
Detach cover at top.
Disengage retaining hooks in direction of
arrows
and pull cover
2
downwards at front out of guide elements at interior mirror base
1
.
Release retaining clips
2
arrows
and detach
humidity sender
G355
item 4
from interior mirror base
1
.
Unplug electrical connector
3
.
Installing (version
“1”
)
Install in reverse order of removal; note the following:
Install interior mirror
General body repairs, interior
Rep. gr.
68
Interior mirror; Removing and installing interior mirror
.