Webasto Thermo Top E Installation Instructions Manual

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Summary of Contents:

[Page 1] Webasto Thermo Top E

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...

[Page 2] Webasto Thermo Top E

22 Lexus GS 450h Validity Vehicle and engine types, equipment variants as well as national specifications, which are not listed in these installation instructions, have not been tested. Installation according to these installation instructions may,...

[Page 3] Webasto Thermo Top E

33 Lexus GS 450h Heater Unit / Installation Kit Recommended heater unit for the relevant vehicle class: Select the heater unit based on the size of the vehicle passenger compartment and the customer's comfort requirements. Foreword These instal...

[Page 4] Webasto Thermo Top E

44 Special features are highlighted using the following symbols: Mechanics Electrics Water connection Fuel connection Exhaust system Combustion air The arrow in the vehicle icon indicates the position on the vehicle and the viewing angle. Lexus GS...

[Page 5] Webasto Thermo Top E

5 Lexus GS 450h Heater Unit Installation Location 1 Heater unit Installation location 1 1 Preliminary Work WARNING! - Let off pressure in the cooling system. - Copy the factory number from the original type label to the duplicate type label. - Remov...

[Page 6] Webasto Thermo Top E

6 Lexus GS 450h Electrical Connections Cable harness feed-through 1 Protective rubber sleeve Time switch 1 Time switch Cable harness installation diagram Fuse holder, K3 relay 1 K3 relay 1 Fuse holder Note the assembly instructions on page 7. 2 1...

[Page 7] Webasto Thermo Top E

7 Lexus GS 450h Preparing the Electronics Bend the fastening strap 3 according to the illustration and fasten with the original vehicle bolt. 2 Drill a Ø 5 mm bore hole 1 Fuse holder, M5x12 bolt, flanged nut M5 Prepare the fuse holder installat...

[Page 8] Webasto Thermo Top E

8 Lexus GS 450h Cut approx. 300mm from the Ø 20mm tube shaft. Install the heater unit cable harness, Mecanyl fuel line, positive connection for the header unit cable harness in the Ø 20mm 1 tube shaft. Run the fuel line, heater cable harness t...

[Page 9] Webasto Thermo Top E

9 Lexus GS 450h 1 Red (rt) wire, Ø 6 mm pointed cable socket 2 Positive base Connec- ting to the positive supply Run the brown (br) wire for the heater unit cable harness ground supply 3 through the cable socket 1 to the grounding point 2 and c...

[Page 10] Webasto Thermo Top E

10 Lexus GS 450h Blower Control Connect to 40-pin connector L 52 (A) pin 21 from the A/C amplifier. Connect with enclosed blade receptacles according to the circuit diagram. Replace fuse F3 with 10A. 1 40-pin connector L52. Connec- ting the A/C ...

[Page 11] Webasto Thermo Top E

11 Lexus GS 450h Automatic air condi- tioning circuit diagram Webasto components Lexus components Colors and symbols Legend HG Heater unit TT-C/E ECU-IG Fuse, 10A rt red F1 Fuse, 20A 4E/4D Plug-in connection ws white F2 Fuse, 1A 5D/5G Plug-in conn...

[Page 12] Webasto Thermo Top E

12 Lexus GS 450h Remote Start Option Attach the receiver with double-sided Velcro tape on the blower unit according to the figure. 1 Receiver Assem- bling the receiver 1 Antenna Assem- bling the antenna Temperature gauge only with remote T100 HT...

[Page 13] Webasto Thermo Top E

13 Lexus GS 450h Thermo Call Option Remove the insulation mat receiver bracket. Attach the receiver with double-sided Velcro tape on the footwell cover on the passenger side. 1 Footwell cover on passenger side 2 Receiver Assem- bling the receive...

[Page 14] Webasto Thermo Top E

14 Lexus GS 450h Preparing the Installation Location Remove original vehicle bolt at position 1. Drill open the weld nut to to Ø 10.5mm Remove original vehicle bolt 2, this will be used again. 1 Original vehicle bolt M10, weld nut Drill open ...

[Page 15] Webasto Thermo Top E

15 Lexus GS 450h Assemble the original vehicle cable harness2 on the drill hole 1 with rubber tube clamp Ø18mm 3 according to the illustration. 4 M6x20 bolt, flanged nut M6 Attaching the cable harness Installing the Heater Unit Prior to assembly...

[Page 16] Webasto Thermo Top E

16 Lexus GS 450h Fuel Connection CAUTION! Open the vehicle's tank-cap lock, 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 cable harness so that t...

[Page 17] Webasto Thermo Top E

17 Lexus GS 450h Run the tube shaft 2, the Mecanyl fuel pipe and the metering pump cable harness along the original vehicle lines 1 to the underbody and secure with cable clips. Installing lines Run the tube shaft, the Mecanyl fuel pipe and t...

[Page 18] Webasto Thermo Top E

18 Lexus GS 450h Insert the heater unit cable harness and metering pump cable harness in the Ø 10mm hose shaft 1 , according to the illustration, run to the metering pump installation location 2 and secure with cable clips 3. Connec- ting to...

[Page 19] Webasto Thermo Top E

19 Lexus GS 450h Install the tank mounting1 according to the manufacturer's instructions. Shorten the moulded hose 2 by 10 mm for Ø 3.5 mm. 3 Universal clip Ø 8mm 4 Tank extracting device 5 Universal clip Ø 10 mm 6 Enclosed 2000 long fue...

[Page 20] Webasto Thermo Top E

20 Lexus GS 450h Re-assembling the panelling 1. Assem- bling the panelling 44 1 ...

[Page 21] Webasto Thermo Top E

21 Lexus GS 450h Water Connection WARNING! Tighten all hose clamps with 2.0 + 0.5 Nm. Any coolant running off should be collected using an appropriate container. Install hoses so that they are kink-free. Unless specified otherwise, always fasten usin...

[Page 22] Webasto Thermo Top E

22 Lexus GS 450h c = 310mm d = 280mm Dispose of section X Cutting water hose into sections Cut the braided protective hose for hose C to 560 mm and insert. Cut the braided protective hose for hose D to 380mm and insert. Cut the heat shrink hos...

[Page 23] Webasto Thermo Top E

23 Lexus GS 450h Remove the original vehicle engine moulded hose 1 from the engine exhaust to the heat exchanger inlet, the spring band clamps and moulded hose will no longer be needed. Splitting point 1 heat exchanger inlet connecting piece Con...

[Page 24] Webasto Thermo Top E

24 Lexus GS 450h Placement in the engine compart- ment Placement in the engine compart- ment Connec- ting to the heater unit Installing in the engine compart- ment 49 F E D 50 E D 51 C 52 B C ...

[Page 25] Webasto Thermo Top E

25 Lexus GS 450h Placement in the engine compart- ment The moulded hose from the motor inlet 1 is only disassembled here as a demonstration. 2 Cable clip Connec- ting to the engine exhaust Before connecting, fill the water hoses with coolant....

[Page 26] Webasto Thermo Top E

26 Lexus GS 450h 1 Cable clips Placement in the engine compart- ment 57 1 ...

[Page 27] Webasto Thermo Top E

27 Lexus GS 450h Combustion Air 1 Combustion air pipe a = 280mm Dispose of section X Cutting the combus- tion air pipe into sections 1 Angle bracket 2 Original vehicle stay bolts, M8 flanged nut Assem- bling the angle bracket 4 Combustion air i...

[Page 28] Webasto Thermo Top E

28 Lexus GS 450h Exhaust System 1 Exhaust pipe a = 280mm 2 Exhaust end section b = 280mm Dispose of section X Preparing the exhaust pipe 1 Angle bracket 2 M6x20 bolt, flanged nut M6 3 Exhaust silencer 4 Red (rt) rubber profile 5 Exhaust pipe 6 Ho...

[Page 29] Webasto Thermo Top E

29 Lexus GS 450h Assemble the brake coolant air duct 2 ! Align the red (rt) rubber profile on the exhaust line 1 to the ventilation channel and hose (page 28/62). Ensure sufficient distance from adjacent components. Positio- ning the rubber pr...

[Page 30] Webasto Thermo Top E

Lexus GS 450h Webasto AG Postfach 80 - 82132 Stockdorf - Hotline 0 18 05 / 93 22 78 Hotfax (0395) 55 92-353 - http://www.webasto.de Feel the drive Final Work WARNING! Reassemble disassembled components in reverse order. Check that all hose lines, cli...

[Page 31] Webasto Thermo Top E

3131 Lexus GS 450h For short distance trips, it is not recommended that the rear window heating be used. Rule of thumb for operating the auxiliary heating: driving time = heating time. Operating instructions for the end customer Please remove page an...

[Page 32] Webasto Thermo Top E

32 Lexus GS 450h 0 100 mm 100 mm Scale 1:1 Compare the size of the printed version with dimension lines. Permitted tolerance a maximum of 2%. Set the printer settings to “no margin” or “minimize margins” and 100% of the normal size. Tank Ext...