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WARNING!
Hazard warning:
Incorrect installation or repair of Webasto heating systems may cause a fire or result in the emission of carbon monoxide, which can be fatal. Serious or fatal injuries can be caused as a result.
Specialist company training, technical documentation, specialized tools and equipment are required to install and repair Webasto heating and cooling systems.
NEVER attempt to install or repair Webasto heating or cooling systems if you have not suc-cessfully completed the company training and thereby acquired the required technical skills, or if you do not have access to the required technical documentation, tools and equipment needed to carry out correct installation and repairs.
ALWAYS follow all Webasto installation and repair instructions and observe all warnings.
Webasto does not accept any liability for defects and damage that are attributable to installa-tion by untrained staff.
Water Heater Unit
Installation Instructions
Ident. No.:1312803D_EN Fee Euro 10.00 © Webasto AG
Audi A3 / A3 Convertible1.6 FSI and 1.8 + 2.0 TFSIfrom Model Year 2006Left-hand drive vehicle
Feel the drive
Thermo Top E Additional Heater e100 0003
Thermo Top C Additional Heater e100 0002
Thermo Top P Additional Heater e100 0104
Audi A3 / A3 Convertible
Table of Contents
Validity
Audi A3 and A3 Convertible
Vehicle and engine types, equipment variants and national specifications not listed in these installation instructions have not been tested. However, installation according to these installation instructions may be possible.
The installation location of a digital timer and summer/winter switch should be confirmed with the end customer before installation.
Manufacturer Model Type EG-BE No./ABEAudi A3 8P e1 * 2001/116 * 0217 * ...Audi A3 Convertible 8P e1 * 2001/116 * 0456 * ...
Engine type Engine model Output in kW Displacement in cm³BLF Gasoline 85 1598BYT Gasoline TFSI 118 1798BZB Gasoline TFSI 118 1798BWA Gasoline TFSI 147 1984
Validity 2Heater Unit/Installation Kit 3Foreword 3General Instructions 3Special Tools 3Explanatory Notes on Document 4Preliminary Work 5Heater unit installation location 5Electrical system 6Fuse holder and relay K3 7Climatronic fan controller 8Fan controller without Climatronic 9Remote option (Telestart) 10Thermo Call option 11
Premount heater unit 12Installing heater unit 15Fuel Connection 17Coolant on 1.6 FSI 21Coolant on 1.8 TFSI 25Coolant on 2.0 TFSI 32Exhaust gas 35Final Work 37Adjusting passenger compartment monitoring 37Operating Instructions for End Customer 38
1312803D_EN 2
Audi A3 / A3 Convertible
Heater Unit/Installation Kit
Also to be ordered for 1.8 TFSI Gasoline:
Heater unit recommended for the respective vehicle class:
The selection of the heater unit is based on the passenger compartment size of the vehicle and the level of comfort required by the customer!
ForewordThese installation instructions apply to Audi A3 / A3 Convertible Gasoline vehicles - for validity, see page 2 - from model year 2006 and later, assuming technical modifications to the vehicle do not affect installation, any liability claims excluded. Depending on the vehicle version and equipment, modifica-tions may be necessary during installation with respect to these installation instructions.
However, the stipulations in the "installation instructions" and "operating and maintenance instructions" for the Thermo Top C/P/E must always be observed.The corresponding rules of technology and any information from the vehicle manufacturer should be observed during the installation work.
General InstructionsInstallation should be carried out according to the general, standard rules of technology. Unless spec-ified otherwise, fasten hoses, lines and wiring harnesses to original vehicle lines and wiring harnesses using cable ties.Sharp edges must be provided with rub protection (cut-open fuel hose)!Spray unfinished body areas, e.g. drilled holes, with anti-corrosion wax (Tectyl 100K, Order No. 111329).
Special Tools- Torque wrench for 2.0 - 10 Nm- Hose clamping pliers- Unlocking tool
Quantity Description Order No.:1 Retail accessories with desired heater control See price list1 Installation Kit for Audi A3 / A3 Convertible 1.6 FSI and 2.0
TFSI Gasoline1312804A
Quantity Description Order No.:1 Installation Kit for Audi A3 / A3 Convertible 1.8 TFSI Gasoline 1313623A
Vehicle Heater UnitCompact car Thermo Top EMid-size car, station wagon Thermo Top CFull-size car, van, offroader Thermo Top P
1312803D_EN 3
Audi A3 / A3 Convertible
Explanatory Notes on Document
To provide you with a quick overview of the individual working steps, you will find an identification mark on the outside top right corner of the page in question.
1312803D_EN 4
Special features are highlighted using the following symbols:
The arrow in the vehicle icon indicates the position on the vehicle and the viewing angle.
Specific risk of injury or fatal accidents.
Specific risk of damage to components.
Specific risk of fire or explosion.
Reference to general installation instructions of Webas-to components or to the manufacturer's vehicle-specific documents.
Reference to a special technical feature.
All dimensions are in mm!Tightening torque of hose clamps = 2.0 + 0.5 Nm!Tightening torque of Ejot screws, Ejot studs = 10 Nm!
Mechanical system
Electrical system
Coolant
Fuel
Exhaust gas
Combustion air
Audi A3 / A3 Convertible
Preliminary Work
WARNING!- Open the fuel tank cap and vent the fuel tank.- Close the tank cap again.- Depressurize the cooling system.- Copy the factory number from the original type label to the duplicate type label.- Remove years that do not apply from the duplicate label.- Attach the duplicate label (type label) in the appropriate place.- Disconnect the battery "earth" or "ground" connection.- Remove the engine cover (if present).- Remove the air filter with the intake hoses.- Remove the battery.- Remove the battery carrier.- Remove the lower instrument panel trim on the driver's side- Only with Climatronic: Remove the A/C control panel.- Remove the rear bench seat.- Open the right-hand fuel sender service lid.- Remove the left front wheel.- Remove the front section of the left front wheel well trim. - Remove the underride protection.- Remove the right-hand underbody trim.
Remove page 38 "Operating Instructions for End Customer" and add to the vehicle operating instruc-tions.
Installa-tion loca-tion
Heater unit installation location
1 Heater unit
1
1
1312803D_EN 5
Audi A3 / A3 Convertible
Wiring har-ness in-stallation diagram
Electrical systemWiring harness pass through
1 Original vehicle wiring harness pass through
Digital timer and summer/winter switch op-tion
1 Digital timer2 12 mm dia. hole, summer/winter switch
Ground connection
1 Original vehicle ground point
Fuse holder, relay K3
Description of installation for K3 relay 1 and fuse carrier 2 on Page 7
2
1
5
3
1
2
Do not install the metering pump cable harness until later together with fuel pipe along the original vehicle fuel lines on the under-body
4
1
5
2
1
1312803D_EN 6
Audi A3 / A3 Convertible
Holes for fuse holder and K3 re-lay
Installing fuse holder and K3 re-lay
Installing fuse holder and K3 re-lay
Connect-ing posi-tive and ground wire
Fuse holder and relay K3
Countersink holes 3 from behind for M5 coun-tersunk head screws.
1 Cover of fuse/relay carrier in engine com-partment
2 Cut away bar in shaded area3 5.0 mm dia. hole [2x]
1 M5x12 countersunk head screw [2x]
On vehicles with Climatronic, replace 25 A fuse F3 7 with 5 A fuse provided.
1 M5 flanged nut2 Large diameter washer (between cover
and retaining plate)3 Retaining plate4 M5 flanged nut5 Relay K36 Fuse holder
Route brown (br) ground wire to original vehi-cle ground support point below headlight and connect.
1 Fuse/relay carrier2 Original main vehicle fuse3 Red (rt) positive wire
1
6
40
9 9
3
20
2
3
7
11
6
2
3
8
74
5
1
21
3
9
1312803D_EN 7
Audi A3 / A3 Convertible
1312803D_EN
Climatronic fan controller
Applicable from software version 0150 and 0160!
Produce connection as shown in wiring dia-gram.
1 Black (sw) wire from K3/302 Beige connector T16e3 Green/white (gn/ws) wire
Connect-ing air-con-ditioning control ele-ment
Climatron-ic Wiring Diagram
Webasto components Components of Audi A3 Colors and symbols
Legend
HG Heater unit TT-C/E J255 Control unit of A/C control panel
rt red
X1 6-pin connector T16e Connector, beige ws whiteF3 Replace 25 A fuse F3
with 5 A fuse.sw blackbr brown
K3 Fan relay gn green
Insulate wire ends and tie back
Wiring colors may vary.
1 2
3
10
Webasto
31
3015
Audi
F3HG4X1
86
85 30
87a87
K3
sw
!
T16e 16
J255
F
rt
gn/ws
8
Audi A3 / A3 Convertible
1312803D_EN
Fan controller without Climatronic
Detach vehicle fuse carrier 3 and unlock con-tact lock 4Unlock black/yellow (sw/ge) 4² wire 5 on fuse carrier and disconnectProduce connection according to wiring dia-gram with wire connectors provided.
1 Red (rt) wire from K3/87a2 Black (sw) wire from K3/30
Connect-ing fan mo-tor
Wiring dia-gram with-out Climatron-ic
Webasto components Components of Audi A3 Colors and symbols
Legend
HG Heater unit TT-C/E J65 Control unit of A/C control panel
rt red
X1 6-pin connector N24 Resistor group ws whiteF3 25 A fuse F3 SC40 Fuse 40A sw blackK3 Fan relay T.... Connector br brown
gn greenge yellow
Wiring colors may vary.
15
11
2
43
Webasto
31
3015
Audi
sw/ge
br
rt/sw
rt/ws
sw/ge
T10a
F3HG
4X1
86
85 30
87a87
K3
sw
rt
SC 40
+
-V2M
5 T5d
T5d31 24
J65
T4m34 21
N24
9
Audi A3 / A3 Convertible
Installing receiver
Installing antenna
Installing tempera-ture sensor
Remote option (Telestart)
If M6 screw 2 is not present, then use suitableM6 screw with spring lockwasher.Drill out upper hole of bracket to 6.5 mm dia.
1 Receiver2 M6 bolt in existing threaded hole3 Bracket
1 Antenna
Temperature sensor for HTM100 only
1 Fasten temperature sensor with adhesive tape
2
12
1
3
1
13
1
14
1312803D_EN 10
Audi A3 / A3 Convertible
Installing receiver
Installing antenna
Thermo Call option
1 Fasten receiver with suitable means
1 Antenna
1
15
1
16
1312803D_EN 11
Audi A3 / A3 Convertible
Cutting combus-tion air pipe to length
Premount-ing heater unit
Premount-ing heater unit
Preparing bracket
Premount heater unit
1 Combustion air pipe a = 250
Discard section X
Ejot stud, tightening torque 10 Nm.
1 Ejot stud
Insert one washer each between heater unit and bracket 5 at positions 2
1 M6x30 spacer nut2 Washer, Ejot screw [2x]3 27 mm dia. clamp4 Combustion air pipe
Convertible only
1 Bracket
a
1
X
17
1
18
1
5
2 3
2
4
19
1
29739
1940
1312803D_EN 12
Audi A3 / A3 Convertible
Premount-ing heater unit
Premount-ing heater unit
Cutting ex-haust pipe to length
Premount-ing ex-haust system
Insert one washer each between heater unit and bracket 5 at positions 2
1 M6x30 spacer nut2 Washer, Ejot screw [2x]3 27 mm dia. clamp4 Combustion air pipe
All vehicles
1 Hose section, 10 mm dia. clamp [2x]2 Strut3 Ejot screw [2x]4 Combustion-air intake muffler5 Drill out hole on heater unit to 6 mm dia.
and mount retaining clip in hole6 Combustion air pipe7 Fuel line
1 Exhaust pipe a = 190 (for Sedan) a = 235 (for Convertible)2 Exhaust end section b = 240
Discard section X
Sedan only
1 M6x16 bolt, spring lockwasher2 Hose clamp [2x]3 Red (rt) rubber isolator, without groove4 Exhaust pipe with insulation5 Muffler
20
1
5
2 3
2
4
21
2
5
4
3 3
67
1
a b
1 2
X
225
21
4
2
3
1312803D_EN 13
Audi A3 / A3 Convertible
Premount-ing ex-haust system
Premount-ing ex-haust system
Preparing installa-tion loca-tion
Preparing installa-tion loca-tion
Convertible only
Slide red (rt) rubber isolator without groove 2 onto exhaust-gas insulation 3.
1 Hose clamp [2x]2 Red (rt) rubber isolator, without groove3 Exhaust pipe with insulation4 Muffler5 M6x16 bolt, spring lockwasher
All vehicles
1 Hose clamp2 Red (rt) rubber isolator, without groove3 Exhaust end section
Preparing installation location
Sedan only
Secure large diameter washer against falling with putty etc.
1 Large diameter washer on original vehicle stud bolt [3x]
2 Edge protection section
Convertible only
Secure large diameter washer against falling with putty etc.
1 Large diameter washer on original vehicle stud bolt [3x]
2 Edge protection section
231 2
5
4
3
1
24
3
1
2
25
1
1
12
26
1
1
12
1312803D_EN 14
Audi A3 / A3 Convertible
Installing heater unit
Aligning exhaust system
Aligning exhaust system
Installing heater unit
Installing heater unit
Sedan only
1 Large diameter washer, flanged nut M8 [3x]
Ensure freedom of movement of exhaust sys-tem relative to original vehicle component and lines.
1 Original vehicle wiring harnesses (secured with cable ties)
2 Horn3 Exhaust pipe
Ensure freedom of movement of exhaust sys-tem relative to original vehicle component and lines.Position rubber isolator 2.
1 Headlight washer system3 Horn4 Horn bracket
Convertible only
1 Large diameter washer, flanged nut M8 [3x]
27
1
1
1
28
2
1
3 1
29
4
1
3
2
30
1
11
1312803D_EN 15
Audi A3 / A3 Convertible
Mounting and rout-ing wiring harness
Routing wiring har-ness
All vehicles
Watch routing of wiring harness. Danger of rubbing!
1 Wiring harness of heater unit 2 Clip cable tie in pre-perforated hole of
heater unit cover3 Cable tie
Watch routing of wiring harness. Danger of rubbing!
Route excess lengths from wiring harness of heater unit 1 in cable duct 2 below battery and secure with cable ties.
31
1
2
3
32
1
22
1312803D_EN 16
Audi A3 / A3 Convertible
Routing to firewall
Routing into cool-ant reser-voir
Routing in coolant reservoir
Fuel Connection
CAUTION!Open the vehicle's fuel tank cap, ventilate the tank and then re-close the tank lock.
Catch any fuel running off with an appropriate container.
Install fuel line and metering-pump wiring harness so that they are protected against stone impact. Un-less specified otherwise, always fasten using cable ties.Mount the fuel line and wiring harness with rub protection on sharp edges.
WARNING!The fuel line and wiring harness are routed to the metering pump in as shown in the wiring harness routing diagram.
1 Fuel line
1 Coolant reservoir cap detached2 Existing pass through3 Fuel line and wiring harness of metering
pump
Fasten fuel line and wiring harness of meter-ing pump 1 in coolant reservoir on original ve-hicle lines with cable tie. Pay particular attention to freedom of move-ment of wiper linkage.
33
1 1 1
34
1 2
3
35
1 1
1312803D_EN 17
Audi A3 / A3 Convertible
Routing fuel line and wiring harness of metering pump
Routing fuel line and wiring harness of metering pump
Installing silent block
Mounting metering pump and connect-ing pres-sure side
1 Metering pump wiring harness2 Existing pass through3 Fuel line
Route fuel line and wiring harness of meter-ing pump along original vehicle fuel lines 2 to fuel tank.
1 Line duct
1 Silent block, large diameter washer, M6 flanged nut
2 Remove sealing plug
1 Wiring harness of metering pump, connec-tor mounted
2 Secure rubber-coated p-clamp on silent block with flanged nut
3 Metering pump4 Plug remounted5 Hose section, 10 mm dia. clamp [2x]6 Fuel line
36
2
3
1
1 2
37
38
1
2
39
1
6
5
2 3
4
1312803D_EN 18
Audi A3 / A3 Convertible
Cutting standpipe and mold-ed hose to length
Premount-ing stand-pipe and molded hose
Cutting off blind plug
Connec-tion to fuel-tank send-ing unit
1 Standpipe2 Molded hose
Clamp 2 in center between beads on end of standpipe.
1 Standpipe2 10 mm dia. clamp3 Molded hose
1 Tip of blind plug shortened by 3 mm2 Fuel-tank sending unit
Should the standpipe be slightly curved on delivery, then it must be aligned so that the end points toward the rear right.Otherwise there is a danger of the fuel gauge being impaired.
1 13.5 mm dia. clamp2 Premounted molded hose with standpipe 3 10 mm dia. clamp4 Remaining section of fuel line
1 2
40
23510
7.5 mm dia. 4.5 mm dia.
41
1 2 3
7.5 mm dia.
4.5 mm dia.
1
42
2
43
1
4
3
2
1312803D_EN 19
Audi A3 / A3 Convertible
Connec-tion to fuel-tank send-ing unit
Connect-ing intake side of me-tering pump
1 13.5 mm dia. clamp2 Remaining section of fuel line3 10 mm dia. clamp4 Premounted molded hose with standpipe
1 Hose section, 10 mm dia. clamp [2x]2 Fuel line from fuel-tank sending unit
44
4
1
3
2
45
2
1
1312803D_EN 20
Audi A3 / A3 Convertible
Coolant routing di-agram
Coolant on 1.6 FSI
WARNING!Any coolant running off should be collected using an appropriate container! Route coolant hoses kink-free! Unless specified otherwise, always fasten using cable ties. Position clamps so that no other hose can be damaged! When installing the coolant hose, the heater unit must be filled with coolant.The connection should be "inline" based on the following diagram:
All spring clips without a specific designation = 27 mm dia. 1 = Original vehicle spring clip !All hose clamps = 20-27 mm dia.! Connecting pipe = 20x20 dia.2 = Black (sw) rubber isolator .
A
B
2
1
1312803D_EN 21
Audi A3 / A3 Convertible
Cutting coolant hoses to length
Premount-ing coolant hoses
Cutting point
Connect-ing heat exchanger inlet
a = 1000b = 1050
Discard section X
Push braided protection hoses onto hose A and B, cut to length and shrink.
1 Heat shrink plastic tubing [4x]2 Black (sw) rubber isolator3 20x20 connecting pipe, 27 mm dia. spring
clip
Pull off hose on engine outlet to heat ex-changer inlet 3 on connection piece of heat exchanger inlet 2. Spring clip 1 will be reused.Install battery carrier.
1 Connection piece of heat exchanger inlet
A B
1
b
a
1 1
2 461
3
2
47
3
1
48
1
b
1312803D_EN 22
Audi A3 / A3 Convertible
Routing in engine compart-ment
Connec-tion to heater unit
Routing in engine compart-ment
Connect-ing engine outlet
1 Engine-outlet hose section2 Align rubber isolator
b
49
50
ba
51
a
b
52
a
1
2
b
1312803D_EN 23
Audi A3 / A3 Convertible
Fastening hoses
Fastening hoses
1 M6x20 screw, spring lockwasher on exist-ing thread
2 29 mm dia. rubber-coated p-clamp [2x]
1 27x6 double clip on hose A and brake line from brake master cylinder
2 27x6 double clip on hose B and brake line from brake master cylinder
a 53
1
22
b
a b
2
54
1
1312803D_EN 24
Audi A3 / A3 Convertible
Coolant routing di-agram
Coolant on 1.8 TFSI
WARNING!Any coolant running off should be collected using an appropriate container! Route coolant hoses kink-free! Unless specified otherwise, always fasten using cable ties. Position clamps so that no other hose can be damaged! When installing the coolant hose, the heater unit must be filled with coolant.The connection should be "inline" based on the following diagram:
All spring clips without a specific designation = 27 mm dia. All connecting pipes = 20x20 mm dia.All hose clamps without a specific designation = 20-27 mm dia.
A
C
B
1312803D_EN 25
Audi A3 / A3 Convertible
Cutting coolant hoses to length
Preparing coolant hoses
Premount-ing coolant hoses
Installing bracket and clip-type cable tie
Manual transmission
a = 700b = 70c = 710
Discard section X
Push braided protection hoses onto hose A and C and cut to length.Cut heat shrink plastic tubing to length.
1 25 mm long heat shrink plastic tubing [4x]
Drill 6 mm dia. hole in cover of cable duct 2 at position 3 only on vehicles with a new air filter box (water drain into wheel well). When drill-ing, watch lines located behind!
1 M6x12 bolt, flanged nut on existing hole3 6 mm dia. hole, clip-type cable tie4 Clip-type cable tie [2x] in hole of bracket5 Bracket
A BXC
A
C
1
1
1
1
C
b a 55
56
4
5 4
1
3
2
1312803D_EN 26
Audi A3 / A3 Convertible
Prepare battery car-rier
Cutting point
Connect-ing heat exchanger inlet
Routing in engine compart-ment
1 Angle bracket2 Mount M6x20 bolt, flanged nut in existing
hole
Cut off hose on engine outlet/heat exchanger inlet at marking.Install battery carrier.
1 Hose section of heat exchanger inlet2 Engine outlet hose section
1 Hose on heat exchanger inlet2 M6x20 bolt, pin lock3 29 mm dia. rubber-coated p-clamp
Route hose C through rubber-coated p-clamp 1.
57
1
2
582 1
3
59C
3
2
1
60C
1
1312803D_EN 27
Audi A3 / A3 Convertible
Connect-ing heater unit
Routing in engine compart-ment
Routing in engine compart-ment
Connect-ing engine outlet
Fasten hose C on clip-type cable tie 2,
1 Clip-type cable tie [2x]3 Cable tie
Vehicles with new air filter box(Drain pipe into right-hand wheel well)
1 Clip-type cable tie [2x]2 Cable tie
All vehicles
1 Hose of engine outlet
61
Ca
62
C
3a
21
1
632a
C11
64
1
a
1312803D_EN 28
Audi A3 / A3 Convertible
Fastening hoses
Cutting coolant hoses to length
Preparing coolant hoses
Installing bracket and clip-type cable tie
Fasten hose A on clip-type cable tie 3!Ensure sufficient distance to neighboring components.
1 Spacer bracket2 Flanged nut on M6x20 bolt4 29 mm dia. rubber-coated p-clamp
Automatic transmission
a = 670b = 70c = 710
Discard section X
Push braided protection hoses onto hose A and C and cut to length.Cut heat shrink plastic tubing to length.
1 25 mm long heat shrink plastic tubing [4x]
Drill 6 mm dia. hole in cover of cable duct 4 at position 5. Watch lines located behind duct when drilling!
1 Clip-type cable tie [2x] in hole of bracket2 Bracket3 M6x12 bolt, flanged nut on existing hole5 6 mm dia. hole, clip-type cable tie
653
4
a
C
2
1
A BXC
A
C
1
1
1
1
1 2 3 4
5
1 66
1312803D_EN 29
Audi A3 / A3 Convertible
Prepare battery car-rier
Cutting point
Turning spring clip
Connect-ing heat exchanger inlet
1 Angle bracket2 Mount M6x20 bolt, flanged nut in existing
hole
Cut off hose on engine outlet/heat exchanger inlet at marking. (Cut out elbow)
1 Engine-outlet hose section2 Hose section of heat exchanger inlet
1 Hose on heat exchanger inlet disconnect-ed
2 Spring clip turned downward3 Hose section from engine outlet discon-
nected
Install battery carrier.
1 Hose on heat exchanger inlet2 Cable tie on angle bracket
67
1
2
68
21
69
1
2
3
702 C
1
1312803D_EN 30
Audi A3 / A3 Convertible
Routing in engine compart-ment
Connect-ing heater unit
Routing in engine compart-ment
Connect-ing engine outlet
Fasten hose C with premounted clip-type ca-ble ties [2x] at position 1.
1 Cable tie2 Clip-type cable tie premounted
Ensure sufficient distance to neighboring components.
1 Hose of engine outlet2 Cable tie
71
1
1
C
Cb
72
73
C
2 a1 1
1
74a
1
2
1312803D_EN 31
Audi A3 / A3 Convertible
1312803D_EN
Coolant on 2.0 TFSI
WARNING!Any coolant running off should be collected using an appropriate container! Route coolant hoses kink-free! Unless specified otherwise, always fasten using cable ties. Position clamps so that no other hose can be damaged! When installing the coolant hose, the heater unit must be filled with coolant.The connection should be "inline" based on the following diagram:
Coolant routing di-agram
All spring clips without a specific designation = 27 mm dia. All connecting pipes = 20x20 mm dia.All hose clamps without a specific designation = 20-27 mm dia. 1 = Black (sw) rubber isolator .2 = Original vehicle spring clip .
A
B
C
1
2
32
Audi A3 / A3 Convertible
1312803D_EN
a = 700b = 120c = 800
Discard section XCutting coolant hoses to length
Push braided protection hoses onto hose A and C and cut to length.Slide 110 mm heat protection hose 4 onto hose A.
1 Push on heat shrink plastic tubing, shrink down [4x]
2 20x20 connecting pipe, 27 mm dia. clamp [2x]
3 20x20 connecting pipe, 27 mm dia. spring clip
Premount-ing coolant hoses
Pull off hose on engine outlet to heat ex-changer inlet 1 on connection piece of engine outlet. Spring clip 2 will be reused.
Cutting point
Connect hose A to 180° elbow on connection piece of engine outlet
1 Black (sw) rubber isolator
Connec-tion to en-gine outlet
CA BX
a
C
1 1
75
1
1
3
2
4
b
1
762
771a
33
Audi A3 / A3 Convertible
Connec-tion to heat exchanger inlet
Routing in engine compart-ment
Connec-tion to heater unit
Securing hoses A ,B and C
1 Hose on heat exchanger inlet
Align hoses A, B and C over entire length and secure with cable ties.
1 M6x20 screw, spring lockwasher on exist-ing thread
2 29 mm dia. rubber-coated p-clamp [2x]
C
78
1
79a
C
80
Cb
81a
C
2
1
1312803D_EN 34
Audi A3 / A3 Convertible
Installing wheel well trim
Hole in un-derride protection
Mounting rubber iso-lator
Aligning rubber iso-lator
Exhaust gas
Align exhaust end section and rubber isolator.Ensure sufficient spacing of exhaust end sec-tion to transmission and to wheel well trim.(Picture shows vehicle with direct shift trans-mission)
1 Wheel well trim
1 Underride protection2 42 mm dia. hole
Align exhaust end section 3 flush on red rub-ber isolator 2.
1 Underride protection
Convertible only
Align exhaust pipe and rubber isolator 1. En-sure sufficient distance to neighboring com-ponents.
1
82
83
1
2
2
3
84
1
851
1312803D_EN 35
Audi A3 / A3 Convertible
Aligning rubber iso-lator
Hole in un-derride protection
Mounting rubber iso-lator
Align exhaust end section and rubber isolator 1. Ensure sufficient distance to neighboring components.
1 Underride protection2 42 mm dia. hole
Align exhaust end section 3 flush on red rub-ber isolator 2.
1 Underride protection
1
86
87
1
2
34
24
88
1 2
3
1312803D_EN 36
Audi A3 / A3 Convertible
Fastening drain pipe on air filter box
Final Work
WARNING!Mount removed parts in reverse order.
Check all hoses, clamps and all electrical connections for firm seating.
Secure all loose cables using cable ties.
Only use manufacturer-approved coolant.
Spray heater unit components with anti-corrosion wax (Tectyl 100K, Order No. 111 329).
- Connect the battery.- Fill and bleed the coolant circuit according to the vehicle manufacturer’s specifications.- Set the digital timer.- Make setting on A/C control panel according to the "Operating Instructions for End Customer".- Check the proper operation of the additional heater, see the operating instructions/installation in-
structions.- Attach the "Switch off additional heater before refueling" sticker to the left-hand B-pillar.
Adjusting passenger compartment monitoring
WARNING!This can only be carried out at an authorized workshop! Observe the applicable repair manual of the respective vehicle.
- Connect the VAS tester.- Open Item 46 (Central Module of Comfort System)- Go to Item 10 (Adjustment)- Follow the request for the code entry and enter the code 15- Reduce the sensitivity of the passenger compartment monitoring to 50 %- Save this setting- The adjustment of the sensitivity of the passenger compartment monitoring is completed.
Fasten drain pipe 2 with cable tie 1 on strut as shown.
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Audi A3 / A3 Convertible
For vehi-cle with-out Climatron-ic
For vehi-cle with Climatron-ic
Operating Instructions for End Customer
Please remove page and add to the vehicle operating instructions.
Note:We recommend matching the heating time to the driving time.Heating time = driving timeExample:For a driving time of approx. 20 min. (in one direction), we recommend not exceeding a switch-on time of 20 min.
If the summer/winter switch option has been installed, this must be switched in accordance with the time of year. The heater unit will then only switch on the vehicle fan to ventilate the vehicle interior in the position Winter heat and in the position Summer .
Before parking the vehicle, make the following settings:
1 Set temperature to "max."2 Air outlet to windshield3 Set fan to level "1", or possibly "2"
1 Set temperature on both sides to "HI".
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