instrument panel AUDI A4 1998 B5 / 1.G Heating And Ventilation System Servicing Workshop Manual

87-151


Heating and ventilation system,
servicing Instrument panel air outlets and air guide
ducts

CAUTION!
Before working on the electrical system:
Note:
Air is extracted from the passenger compartment
through 2 outlets located on both sides of the rear
luggage compartment area near the bumper
page 87-157
.
Removing and installing Repair Manual, Body
Interior, Repair Group 70

Obtain security code for anti-theft radio.
Note customer's pre-set radio stations.
Disconnect battery Ground (GND) strap.1 -
Instrument panel top cover 2 -
Retaining spring for air guide duct
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87-152


3 -
Retaining spring for air guide duct
4 -
Air guide duct
5 -
Defroster duct
6 -
Right instrument panel air outlet
Removing and installing page 87
-155
7 -
Side window defroster vent
Removing and installing Repair Manual, Body Interior, Repair Group 70

8 -
Center instrument panel air outlet
Removing and installing page 87
-154
9 -
Windshield defroster vent
Removing and installing page 87
-156
10 -
Left instrument panel air outlet
Removing and installing page 87
-155
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87-153

Tool for removing instrument panel air
outlets, locally made


- Bend 3 mm (1/8 in.) diameter wire as shown.
Dimension X = 6 mm (1/4 in.)
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87-154

Instrument panel air outlet (center),
removing and installing


Note:
Should a swivel insert become detached from the air outlet when
removing, re-install swivel insert so that it locks in place on both sides. - Insert tools -A- into the instrument panel air outlet and pull outlet evenly
out of the instrument panel.
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87-155

Instrument panel air outlets (left and
right), removing and installing


Note:
Should a swivel insert become detached from the air outlet when
removing, re-install swivel insert so that it locks in place on both sides. - Insert tools -A- into the instrument panel air outlet and pull air outlet
evenly out of the instrument panel.
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87-156

Instrument panel windshield defroster
vent, removing and installing

Remove instrument panel top cover
Repair Manual, Body Interior, Repair Group
70


- Remove nuts -A- and remove vent from instrument panel top cover.
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87-159

Heater/air conditioner assembly
complete with instrument panel,
removing and installing (1996)


- Using VAG1551 function 03, initiate output
Diagnostic Test Mode (DTM) page 01
-42
.

CAUTION!
Before proceeding with removal of instrument panel and heater/air
conditioner complete: - Proceed through output DTM and wait until air flow flap -A- closes via
air flow flap motor V71.
- Cancel output DTM (press VAG1551 button -C-) with closed air flow
flap -A-.
- Discharge refrigerant system page 87
-201
.
- Remove dust and pollen filter page 87
-158
.
Obtain security code for anti-theft radio.Note customer's pre-set radio stations.Move power seats to most rearward position.Disconnect and remove battery.
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87-162
Remove glovebox, lower shelf on driver side and
center section of instrument panel complete (trim
and supports)
Repair Manual, Body Interior, Repair Group
70

Detach pedal assembly from instrument panel
mounting (bolt -1-) Repair Manual, Brake
System, Repair Group 46

Remove drivers Airbag unit Repair Manual, Body
Interior, Repair Group 69

Remove steering wheel Repair Manual, Electrical
Equipment, Repair Group 96

Remove steering column -4- from steering gear (bolt
-5-) and secure with wire -3- at hole -2- to prevent
unit from sliding apart Repair Manual,
Suspension, Wheels, Steering, Repair Group 48

Disconnect affected electrical connections to
Electronic box (integrated auxiliary fuse/relay panel)
in left air plenum chamber) Repair Manual,
Electrical Equipment, Repair Group 97

Disconnect all affected electrical connections
between instrument panel assembly and vehicle
Repair Manual, Electrical Equipment, Repair Group
97

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87-163

Remove heater/air conditioner assembly complete
with instrument panel Repair Manual, Body
Interior, Repair Group 70

Note:
The instrument panel must only be placed on a
clean, covered workbench to avoid damaging the
top cover.
- Remove footwell air outlet page 87
-134
.
- Disconnect all electrical connections between
instrument panel and heater/air conditioner
assembly.

Notes: - Remove all screws/bolts between instrument
panel mounting and heater/air conditioner
assembly.
- Separate Instrument cluster from heater/air
conditioner assembly.
- Install in reverse order of removal noting the
following.

Before removing screws/bolts, mark installation
position.
All cable ties removed in order to separate the
instrument panel from the heater/air
conditioner assembly must be re-attached at
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87-164

Notes:

When re-installing instrument panel and
heater/air conditioner assembly, ensure the A/C
system vacuum supply hose with heater core
fixture, and low pressure switch electrical
connector and evaporator fixture are inserted
together through the plenum chamber
openings.
Ensure evaporator drain is correctly positioned
page 87
-169
.

Connect coolant hoses correctly:
Ensure boot -C- is correctly installed.Hose -A-: return flow to water pump (with vent hole).Hose -B-: supply from cylinder head.

Replace refrigerant line O-rings -A- and -B-.Evaporator refrigerant line fixture bolt tightening torque: 15 Nm (11 ft
lb). Ensure boot -D- and wiring to low pressure switch are correctly
located and secured when installing.
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