Webasto BlueHeat Installation Instructions Manual

Brand: Webasto

Model: BlueHeat

Type: Installation Instructions Manual

BlueHeat Coolant Heater

2004 Lexus RX330

3.3 Liter V-6

Installation Instructions

DOC P/N 5000684A

KIT P/N 5000655B

– Improper installation or repair of Webasto heating and cooling systems can cause fire

or the leakage of deadly carbon monoxide leading to serious injury or death.

– Installation and repair of Webasto heating and cooling systems requires special

Webasto training, technical information, special tools and special equipment.

– NEVER attempt to install or repair Webasto heating or cooling system unless you have

successfully completed the factory training course and have the technical skills,

technical information, tools and equipment required to properly complete the

necessary procedures.

– ALWAYS carefully follow Webasto installation and repair instructions and heed all

WARNINGS.

– Webasto rejects any liability for problems and damage caused by the system being

installed by untrained personnel.

BlueHeatTM 2004 Lexus RX330 3.3 Liter V-6

Table of Contents

Foreword

Scope and Purpose . . . . . . . . . . . . . . . . . . . . . . . I

Tools Required. . . . . . . . . . . . . . . . . . . . . . . . . . . I

Heater Installation Site . . . . . . . . . . . . . . . . . . . . II

Preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . II

Installation

Heater Preparation and Mounting . . . . . . . . . . . . 1

Electrical Harness- - Overview . . . . . . . . . . . . . . . 2

Fuse Holder / Relays / Resistor . . . . . . . . . . . . . . . 3

Electrical Harness Routing . . . . . . . . . . . . . . . . . . 3

Integration with HVAC Blower Motor . . . . . . . . . 4

Timer Installation - Model 1533 . . . . . . . . . . . . . 5

Ignition ‘On’ Fuse Tap Connection. . . . . . . . . . . . 5

Integration into the Fuel System . . . . . . . . . . . . . 6

Fuel Standpipe Installation . . . . . . . . . . . . . . . . . 6

Fuel Metering Pump Installation . . . . . . . . . . . . . 7

Fuel Line and Cable Installation . . . . . . . . . . . . . 8

Integration into the Coolant System . . . . . . . . . . 9

Exhaust System . . . . . . . . . . . . . . . . . . . . . . . . 10

Combustion Air Intake Installation . . . . . . . . . . 11

Concluding Work . . . . . . . . . . . . . . . . . . . . . . . 12

Power Connection . . . . . . . . . . . . . . . . . . . . . . 12

Final Inspection and Initial Start-up . . . . . . . . . . 12

Basic Troubleshooting. . . . . . . . . . . . . . . . . . . . 14

Wiring Schematic - Part 1. . . . . . . . . . . . . . . . . 16

Wiring Schematic - Part 2. . . . . . . . . . . . . . . . . 17

Plumbing Schematic. . . . . . . . . . . . . . . . . . . . . 18

Foreword

Scope and Purpose

These non-binding installation instructions are intended to support authorized Webasto trained distributors,

dealers and personnel in the installation of the Thermo Top BlueHeat coolant heaters.

These non-binding installation instructions apply to the 2004 Lexus RX330, 3.3 liter gasoline version, unless

technical modifications on the vehicle influence the installation, excluding all liability claims. Depending on the

version and equipment in the vehicle, changes may be required to the installation work set out in these

installation instructions. In any event, however, the directives in the “installation manual” and “operating

manual” must be followed. Acknowledged engineering conventions must be observed for the installation work.

ATTENTION

All relevant state and provincial licensing regulations if any, governing the installation and use of auxiliary

heating devices must be observed!

CAUTION

Location of heater, installation of coolant lines, fuel system and components, wiring and control devices are

important for proper operation. Failure to comply with the installation instructions provided may result in

poor operation or damage to heater and vehicle components.

Tools Required

1/4” Drive Ratchet

1/4” Drive 4 inch extension

10 mm six point socket, 1/4” drive

10 mm six point deep well socket, 1/4” drive

3/8” Drive Ratchet

3/8” Drive 12 inch extension

13 mm socket, 3/8” drive

15 mm socket, 3/8” drive

17 mm socket, 3/8” drive

10 mm combination wrench

8 mm nut driver

Phillips #2 screwdriver

Combination side-cut/crimping pliers

Hose clamping pliers

Hose cutting pliers

Drill

2.5 mm (3/32 in.) drill bit

8.5 mm (21/64 in.) drill bit

9.5 mm (3/8 in.) drill bit

10 mm (25/64 in.) drill bit

Hacksaw

Utility Knife

Wire fish

Hoisting equipment and safety stands

Vehicle manufacturer’s service reference manual

2004 Lexus RX330 3.3 Liter V-6 BlueHeatTM

Fig. 1

Mounting Location

Heater Installed

Heater Installation Site

The Webasto BlueHeat auxiliary coolant heater is to be installed at the left front corner, behind the bumper as

shown in the illustration below.

Preparations

Heater Kit

1. Verify and identify all contents of kit.

Vehicle

1. Verify fuel content in tank.

CAUTION

For reasons of safety due to the possibility of fuel spillage during the installation of a fuel standpipe, it is

recommended there be no more than 3/4 tank or less of fuel present.

If fuel quantity is greater than 3/4 of capacity, make provisions to reduce quantity of fuel.

2. Disconnect negative terminal of vehicle battery(s).

3. Remove front facia.

4. Protect vehicle against soiling and damage with fender covers and seat covers.

Fig. 2

2004 Lexus RX330 3.3 Liter V-6

Installation

Heater Preparation

Position 1 and 2:

– Fasten bracket to heater using 2 M6 self-tapping EJOT

screws.

– Torque screws to 10 Nm. (88.5 lb-in.).

Position 3 and 4:

– Relocate ground splice to location shown.

Position 5, 8 and 9

– Install outboard mounting bracket on heater with 2

M6 self-tapping EJOT screws

– Torque screws to 10 Nm. (88.5 lb-in.).

Position 6, 7 and 8

– Install outboard mounting bracket on vehicle body

with existing and new hardware.

Position 10 and 11

– Install outboard mounting bracket on vehicle body

with existing and new hardware.

Fig. 6

Heater

Bracket

Fig. 3

Fig. 5

Fig. 4

2004 Lexus RX330 3.3 Liter V-6

Electrical Harness - Overview

22 21

Fig. 7Fig. 7

Fig. 7

Universal Electrical Harness - Description

Legend for Figure 7

1 - Fuse Holder and Fuses

2 - Resistor - HVAC blower speed control

3 - Relay K1 - HVAC control

4 - Relay K2 - HVAC control

5 - 18 GA Green - ‘ON’ signal from relay K1 and K2 to

relay K3, Pin 86 (Use when relay K3 is mounted with

relay K1 and K2)

6 - 18 GA Blue - to Ignition ‘ON’ signal source

7 - Main Heater Harness - BlueHeat Coolant Heater

8 - Blower Control Harness - Positive side

9 - 10 GA Red - Connects to HVAC control switch

circuit, positive side, to blower motor

10 - 10 GA Black - Connects to HVAC blower motor

positive side

11 - 18 GA Green - ‘ON’ signal from relay K1 and K2 to

relay K3, pin 86 (Use when relay K3 is mounted near

HVAC blower motor - same function as item 5

12 - Blower Control Harness - Negative side (Harness is

wire tied to main harness. Cut wire tie and separate

from main harness before installing)

13 - 10 GA Blue - Connects to HVAC control switch cir

cuit, negative side, to blower motor

14 - 10 GA White - Connects to HVAC blower motor

negative side

15 - 10 GA Brown - Connects to vehicle ground point

when relay K3 is mounted near HVAC blower motor

16 - 18 GA Green - Relay K3, pin 86 (Connects to ‘ON’

signal 18 GA green from relay K1 and K2). See item

5 and 11.

17 - Relay K3 - HVAC control (Typically mounted near

HVAC blower motor)

18 - 18 GA Blue & Brown - Fuel Metering Pump Harness

19 - 20 GA Black, Red & Brown - Timer Harness

20 - 18 GA Violet - “Vent Mode” for optional remote

control

21 - Main Power Harness

22 - 10 GA Red - Battery Positive

23 - 10 GA Brown - Battery Negative or Ground Point

24 - 18 GA Yellow - Diagnostic Connection

25 - 18 GA Orange - Supplemental heating option - Not

applicable to BlueHeat

26 - 10 GA Brown - Optional ground connection for

relay K3 when K3 is mounted with relay K1 and K2

(Same function as item 15)

2004 Lexus RX330 3.3 Liter V-6

Fuse Holder / Relays / Resistor

ATTENTION

The electrical harness is a two-part assembly. Before

installing, cut wire tie holding the negative side HVAC

blower harness (with relay K3) to the main harness and

separate.

Position 1

– Assemble mounting brackets as shown.

Position 2 and 3

– Fasten K1 and K2 relays to bracket.

– Install resistor on bracket.

Position 4 and 5

– Fasten relay/resistor bracket assembly to body with two

screws.

– Fasten fuse holder to bracket assembly or vehicle

structure using nylon wire tie (Image not available).

Electrical Harness Routing

Position 6 and 7

– Route main harness down to heater mounting location

and connect to heater.

– Secure main harness with nylon wire ties.

Position 8, 9 and 10

– Route timer and blower control harness through

vehicle bulkhead.

Fig. 11

Fig. 10

Fuse Holder

Relays and

Resistor

Assembly

Electrical

Harness

Routing

Fig. 9

Fig. 8 32

2004 Lexus RX330 3.3 Liter V-6

Legend for Figure 6

A From Webasto Heater X1

B 12 VDC ignition ‘On’ fuse tap

C HVAC control module

M HVAC blower motor

X Cut wire 50 mm (2 in.) from HVAC motor

F3 Fuse - Blower circuit 25 amp.

K1 Relay - Ignition ‘On’ interrupt

K2 Relay - Positive side of blower motor circuit

K3 Relay - Negative side of blower motor circuit

R1 Resistor - Blower speed control

30 Battery Positive (Constant power)

15 Ignition (Switched power)

31 Battery Negative (Chassis ground)

Integration with HVAC Blower Motor

ATTENTION

It is permissible to cut excess length from blower control

wiring harnesses.

Position 1 and 2

– Locate vehicle blower motor under passenger side of

vehicle dash.

– Locate blower motor harness connector, cut blower

motor positive and negative wires approximately 2

inches from connector.

– Mount K3 relay under dash (Image not available).

Make HVAC Blower wiring connections as follows:

Position 3

– Cut, strip and crimp

Position 4

– Cut, strip and crimp

Position 5

– Cut, strip and crimp

Position 6

– Cut, strip and crimp

Position 7

– Connect to chassis ground

Position 8

– Crimp green wire to green wire

ATTENTION

Check your wiring! Ensure that all connections have

been done in accordance with the accompanying wiring

diagram (Fig. 13). Sensitive electronic controls can be

damaged if wired incorrectly!

Additional

– Secure HVAC blower control wiring to vehicle

structures with nylon wire ties (Image not available)

HVAC

Blower

Control

Harness

Integration

Fig. 13

Fig. 12

2004 Lexus RX330 3.3 Liter V-6

Timer Installation - Model 1533

ATTENTION

Before installing the timer, please confirm the

installation site with your customer.

CAUTION

Before drilling into any panels, ensure there are no

hidden components behind the panel that may be

damaged or interfere with the timer installation! If

necessary, to avoid damaging components, remove the

panel before drilling holes.

ATTENTION

DO NOT OVERTIGHTEN MOUNTING SCREW!

Overtightening mounting screw will cause stress on the

timer resulting in irreparable damage to the LED display.

Position 9

– Timer installed (See translated template for

instructions, refer to figure 14).

– Screw DIN7981 B3.5x19

– Timer harness connector (Click in)

– Tighten mounting screw - max. 0.8 Nm (7.0 lb-in.).

Ignition ‘On’ Fuse Tap Connection

Position 10 and 11

– Route the blue fuse tap wire to fuse panel.

– With a test light, find an “Ignition ON” power source.

Test light must be off when ignition key is in the OFF

position.

– Using the supplied fuse tap connector, tap into the

“fused”side of the selected fuse.

Timer

Installation

Ignition ‘On’

Fuse Tap

Installation

Fig. 9

Fig.

Fig. 15

Fig.

Fig. 14

Fig. 16 10

2004 Lexus RX330 3.3 Liter V-6

Integration into the Fuel System

WARNING

Full to partially filled fuel tanks are heavy and awkward

to handle. Before removing fuel tank to gain access to

the sender unit, ensure tank is near empty. To avoid

accidents and injury to personnel, make sure tank is well

supported while removing mounting hardware.

– Remove the fuel tank from the vehicle following the

manufacturer’s recommended service procedures.

Position 1

– Remove drivers side fuel sender.

WARNING

Fire and explosion risk! Do not use an electric power

drill to bore into the sender unit as vaporizing fuel can

be ignited. Keep all sources of ignition away from the

fuel tank and work area.

Position 2

– Bore an 8 mm (5/16 in.) hole.

Position 3

– Standpipe (bend tube as necessary to clear moving

parts and cut to length).

Fuel

Standpipe

Installation

Fig. 17

Fig. 11

Fig. 18

203.2 mm (8in.)

Fig. 19

2004 Lexus RX330 3.3 Liter V-6

Legend for Figure 20

4 Standpipe

5 Upper Sealing Washer

6 Lower Sealing Washer

7 Lock Nut

8 Fuel Tank Sender Unit

Position 4 and 7

– Install fuel standpipe with outlet aligned as shown.

– Tighten lock-nut to 9.0 - 9.5 Nm (80 - 84 lb-in.)

– Return fuel sender to fuel tank.

Position 9, 10 and 11

– Pre-assemble rubber fuel line adapter with two hose

clamps.

– Install adapter on standpipe and secure inboard clamp.

– Insert fuel line fully into adapter and secure outboard

clamp.

– Tighten hose clamps to 1.0-1.4 Nm (8.8-12.4 lb-in.)

– Cover fuel line with loom.

ATTENTION

Observe Figure 22 for correct fuel line connecting.

– Use nylon wire ties to secure heater fuel line to existing

vehicle fuel line before installing the fuel tank.

– Assemble and install the fuel tank according to

manufacturer’s recommended service procedure.

Position 12 and 13

– Mount Fuel pump to vehicle using existing stud and

P- clamp provided.

Fuel Pump

Installation

Fig. 22

Fig. 20

Fig. 21

13 12

Fig. 23

2004 Lexus RX330 3.3 Liter V-6

CAUTION

Ensure fuel line does not come into contact with hot

exhaust components or other sources of extreme heat.

Ensure fuel line is kept away from moving parts.

ATTENTION

Fuel line must be cut using a sharp razor knife or razor.

DO NOT cut with side cutters, scissors or similar tools as

doing so will cause a restriction inside the fuel line.

Position 1, 2, 3, and 4

– Route fuel line over to fuel pump and cut to length.

– Connect fuel line to fuel pump inlet with rubber

adapter and two hose clamps. Tighten clamps to 1.0-

1.4 Nm (8.8-12.4 lb-in.)

Position 5, 6, 7, and 8

– Connect remaining section fuel line to fuel pump

outlet with rubber adapter and two hose clamps.

Tighten clamps to 1.0-1.4 Nm (8.8-12.4 lb-in.)

Position 9 and 10

– Route fuel pump harness to fuel pump following

vehicle fuel lines.

– Assemble fuel pump harness connector (assembly

instructions provided in kit) and connect to fuel pump.

Position 11, 12, 13, and 14

– Cover fuel line with loom.

– Route fuel line to heater mounting location following

vehicle fuel lines.

– Secure heater fuel line and wiring harness to vehicle

fuel lines as shown using nylon wire ties.

Position 15, 16, 17, and 18

– Connect fuel line to heater inlet with rubber adapter

and two hose clamps. Tighten clamps to 1.0-1.4 Nm

(8.8-12.4 lb-in.)

Fuel Line

and Cable

Installation

Fuel Line

and Cable

Routing

567

FRONT

Fig. 25

13 12

FRONT

Fig. 26

432

Fig. 24

Fig. 27

15 17

2004 Lexus RX330 3.3 Liter V-6

Fig. 28

Integration into the Coolant System

NOTE:

For an overview of the coolant circuit, turn to the back

section of this manual for a plumbing schematic.

NOTE:

Torque all hose clamps to 1.5 - 2.0 Nm (13 - 18 lb-in.).

Position 1, 2 and 3

– Cut coolant supply hose to heat exchanger between

hose clamping pliers.

Position 4, 5 and 6

– Install 90 degree coolant hose on heater outlet with

clamp.

Position 7, 8 and 9

– Install 180 degree coolant hose on heater inlet with

clamp.

Position 9, 10, 11 and 12

– Route heater inlet and outlet hoses between air box

bracket and engine.

– Cover hoses with loom where they come into contact

with air box bracket.

– Reposition coolant supply hose coming from engine as

shown.

– Connect heater inlet hose to coolant supply hose with

adapter and to hose clamps.

Position 13, 14, 15 and 4

– Connect heater outlet hose to hose going to heat

exchanger with adapter and two clamps.

Preparing

Heater

Hoses For

Connection

Fig. 29

8 9

Fig. 30

910

Fig. 31

2004 Lexus RX330 3.3 Liter V-6

Fig. 32

Exhaust System

Position 1and 2

– Install 90 degree exhaust elbow on heater.

– Tighten clamp to 5 - 5.5 Nm (44 - 49 lb-in.)

Position 3 and 4

– Remove 216mm (8.5 in.) from exhaust tube.

– Cover exhaust tube with high temp wrap.

– Install exhaust tube on 90 degree elbow.

– Tighten clamp to 5 - 5.5 Nm (44 - 49 lb-in.)

Position 4, 5 and 6

– Secure exhaust tube to oil cooler bracket with P-clamp

and new longer bolt.

Position 4, 7 and 8

– Drill hole through lower splash shield and install high

temp doughnut.

– Route exhaust tube through hole in splash shield.

Exhaust

System

Fig. 33

Fig. 34

Fig. 35

2004 Lexus RX330 3.3 Liter V-6

Fig. 36

Combustion Air Intake Installation

Position 1 and 2

– Install split end of combustion air intake tube on heater

with narrow band hose clamp.

Position 1 and 3

ATTENTION

The silencer must be pointed in a downward direction!

– Route combustion air intake tube in front of battery.

– Thread silencer into the end of the combustion air tube

– Secure combustion air intake tube to coolant lines with

nylon wire ties.

Combustion

Air Intake

Fig. 37

2004 Lexus RX330 3.3 Liter V-6

Concluding Work

Power Connection

Position 1 and 2

– Connect heater power lead to the positive terminal of

the battery.

– Connect battery ground cable(s).

Final Inspection and Initial Start-up

Final Inspection

1. Check all fasteners to ensure system is secure.

2. Check routing of coolant lines and ensure coolant lines are securely tied and protected against chaffing and

related damage.

3. Check routing of air intake and exhaust lines and ensure lines are secure. Keep hot exhaust components away

from heat sensitive vehicle components and fuel lines.

4. Check routing of fuel lines and ensure fuel lines are securely tied and protected against chaffing and related

damage.

5. Check routing of wiring harnesses and ensure wiring harnesses are securely tied and protected against chaffing

and related damage.

6. Check for loose wiring connections and battery connections.

7. Check operation of vehicle heater fan with Webasto heater OFF.

Initial Start-up

1. Top off cooling system with coolant per engine/vehicle manufacturers recommendations.

2. Set interior heater control to maximum heat position (hot) and switch off air conditioning system.

3. Start the vehicle engine and run on fast idle for 5 minutes to purge any remaining air from the Webasto heater

and coolant system. While the engine is running check:

• hose connections for leaks.

• coolant level in expansion tank. Add coolant as needed.

4. Switch off the engine.

ATTENTION

More than one start-up attempt of the heater may be required to purge air from fuel system before heater will

start. Cycle heater Off and On after each failed start attempt until heater starts successfully. If heater should fault

to the lock-out mode, which is possible after three start attempts, refer to “Troubleshooting” and follow directions

under “Heater Lockout Reset Procedure.” No further start attempts are possible until the lockout condition is

cleared.

5. Switch on the Webasto heater by means of the instant heat button on timer and check:

• timer panel and instant heat indicator illuminates.

• circulating pump in operation.

• initiation of start-up sequence.

• successful start-up and operation.

6. Allow heater to run for 20 minutes or until coolant is heated to temperature. Re-tighten all hose clamps.

7. Install all vehicle components removed during heater installation.

8. Place Owners Manual and related documentation in vehicle.

Fig. 38 Example only

FRONT

Final

Inspection

Initial Start-

2004 Lexus RX330 3.3 Liter V-6

Basic Troubleshooting BlueHeatTM Coolant Heater

Basic Troubleshooting

General Information

This section describes troubleshooting procedures for the BlueHeat coolant heater within the scope of installation.

Troubleshooting is normally limited to the isolation of defective components and provides information on defective

wiring and connections.

Should the heater not function after completing the installation and initial start-up instructions, refer to the

following troubleshooting instructions and information to isolate and remedy the cause for malfunction.

In the event you are unable to remedy a malfunction after following these troubleshooting instructions or for

unanticipated malfunctions beyond what is covered in this troubleshooting section, please contact one of our

Webasto Technical Assistance Representatives for further instructions.

In the USA, call (800) 555-4518

In Canada, call (800) 667-8900

CAUTION

Advanced troubleshooting requires comprehensive knowledge about structure and theory of operation.

Advanced troubleshooting of the heater and components may only be performed by Webasto trained and

certified, professionals.

Before troubleshooting, check for and eliminate the following probable causes for trouble:

• power supply to heater is less than 10.5 volts at main power connections. Charge batteries and perform load

test to ensure proper battery performance.

• blown fuses.

• corrosion on battery terminals for heater, electrical wiring, connections and fuses.

• loose contacts or connectors, wrong crimping on connectors.

• ensure heater and components have been correctly installed following all pertaining installation instructions.

• shut down initiated by temperature limiter.

• heater control unit locked out. Refer to heater lockout reset procedure.

ATTENTION

After correction of a malfunction, a functional test has to be performed with heater installed on the vehicle.

Heater Lockout Reset Procedure

The BlueHeat is designed with a lockout safety feature built into the control unit. After 3 consecutive unsuccessful

startup attempts, the heater will lock itself out from any further start attempts. The heater may also enter the

lockout mode after experiencing an overheat condition.

Before troubleshooting the heater, ensure heater is not in the “Lockout” mode by performing the following reset

procedure:

1. Ensure timer or switch is in the ‘Off’ position. Turn timer or switch to the ‘On’ position. Remove main fuse F1

(15 Amp), reinsert after 5 seconds.

2. Cycle timer or switch off and then back on once more. Remove fuse F1 once again and reinsert after 5

seconds. Heater should attempt to start in 10 seconds after inserting fuse. Coolant temperature must be

below the lower threshold before heater will attempt to start.

BlueHeatTM Coolant Heater Basic Troubleshooting

General Malfunction Symptoms

The following table lists possible malfunction symptoms and remedies.

PC Diagnostics Interface Kit

CAUTION

Diagnostics equipment is intended for use by Webasto trained personnel at authorized Webasto Distributor,

Dealer and End User service facilities.

A PC Diagnostic Interface kit for the BlueHeat is available that allows for more thorough testing and troubleshooting

of the heater and its components beyond the scope of this installation manual. The diagnostic kit makes it possible

to read and remove (reset) stored malfunction codes from the BlueHeat memory.

The PC Diagnostic Interface Kit comes complete with connecting hardware, software and instructions for use with

any IBM/PC compatible computer. Also available are several interface connectors for use with Webasto heaters

equipped with internal diagnostic capabilities such as the BlueHeat.

In addition to working with stored malfunction codes, the PC Diagnostics Interface Kit allows you to perform several

other functions such as reading values while the heater is in operation or testing individual components. Printing

out malfunction codes is also available (User supplied printer required).

For further capabilities and instructions for use with the BlueHeat heater, see the instruction manual supplied with

the PC Diagnostics Interface Kit.

Order PC Diagnostics Interface Kit under part number 92542F. Kit does not include required adapter for the

BlueHeat and must be included in your order. Order adapter under part number 92566A.

Malfunction Symptom Probable Cause Remedy

Coolant heater switches

off automatically (Fault

lockout)

No combustion after start

or automatic repeat start

Flame extinguishes during

operation

Heater overheats

Vehicle electrical system

voltage too low

Switch off heater momentarily and switch on once

again

Switch off heater momentarily and switch on once

again

Check coolant lines for obstructions, closed valves

and kinks.

Check coolant level. Allow heater to cool down,

reset overheat limiter, switch off heater

momentarily and switch on once again

Charge battery

Switch off heater momentarily and switch on once

again

Heater expels black fumes

from exhaust

Combustion air and/or

exhaust tubing blocked

Check combustion and exhaust tubing for

obstructions

Schematics 2004 Lexus RX330 3.3 Liter V-6

Wiring Schematic - Part 1

2004 Lexus RX330 3.3 Liter V-6 Schematics

Wiring Schematic - Part 2

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Webasto BlueHeat Installation Instructions Manual

Webasto BlueHeat Installation Instructions Manual

Webasto BlueHeat Installation Instructions Manual

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