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Table of Contents
Related Manuals for Lexus IS300h
Summary of Contents for Lexus IS300h
- Page 1 IS300h Gasoline-Electric Hybrid Synergy Drive AVE30 Series...
- Page 2 Foreword This guide was developed to educate and assist dismantlers in the safe handling of Lexus IS300h gasoline-electric hybrid vehicles. IS300h dismantling procedures are similar to other non-hybrid Lexus vehicles with the exception of the high voltage electrical system. It is important to recognize and understand the high voltage electrical system features and specifications of the Lexus IS300h, as they may not be familiar to dismantlers.
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Page 3: Table Of Contents
Table of Contents IS300h Identification ............................2 Exterior .................................3 Interior................................4 Engine Compartment ............................6 Hybrid Component Locations & Descriptions...................7 Specifications ..............................8 Lexus Hybrid Drive Operation........................9 Vehicle Operation............................9 Hybrid Vehicle (HV) Battery Pack and Auxiliary Battery..............10 HV Battery Pack............................10 Components Powered by the HV Battery Pack...................10 HV Battery Pack Recycling ......................... - Page 5 The result of combining these two power sources is improved fuel economy and reduced emissions. The gasoline engine also powers an electric generator to recharge the battery pack; unlike a pure all electric vehicle, the IS300h never needs to be recharged from an external electric power source.
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Page 6: Is300H Identification
IS300h Identification In appearance, the 2014 model year IS300h is nearly identical to the conventional, non-hybrid Lexus IS350/250. The IS300h is a 4-door sedan. Exterior, interior, and engine compartment illustrations are provided to assist in identification. The alphanumeric 17 character Vehicle Identification Number (VIN) is provided in the front windshield cowl, engine compartment, and on the left side B pillar. -
Page 7: Exterior
IS300h Identification (Continued) Exterior IS300h logo on the trunk. logos on the rocker moldings. Gasoline fuel filler door located on the left side rear quarter panel. Exterior Front and Driver Side View Exterior Rear and Driver Side View... -
Page 8: Interior
IS300h Identification (Continued) Interior The instrument cluster (READY indicator and warning lights) located in the dash behind the steering wheel, is different than the one on the conventional, non-hybrid IS350/250. Hint: If the vehicle is shut off, the instrument cluster gauges will be “blacked out”, not illuminated. - Page 9 IS300h Identification (Continued) A switchable gauge in the instrument cluster showing either a hybrid system indicator or a tachometer depending on driving mode. Except F SPORT Hybrid System Indicator Tachometer F SPORT Tachometer Hybrid System Indicator Instrument Cluster View...
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Page 10: Engine Compartment
IS300h Identification (Continued) Engine Compartment 2.5-liter aluminum alloy gasoline engine. Logo on the plastic engine cover. Orange colored high voltage power cables. Engine Compartment View Power Cables... -
Page 11: Hybrid Component Locations & Descriptions
Hybrid Component Locations & Descriptions Component Location Description 12 Volt Auxiliary Left Side of A lead-acid battery that supplies power to the low voltage Battery Trunk devices. Hybrid Vehicle Trunk Area, 230.4 Volt Nickel Metal Hydride (NiMH) battery pack (HV) Battery Mounted to Spare consisting of... -
Page 12: Specifications
Hybrid Component Locations & Descriptions (Continued) Specifications Gasoline Engine: 178 hp (133 kW), 2.5-liter Aluminum Alloy Engine Electric Motor: 141 hp (105 kW), Permanent Magnet Motor Transmission: Automatic Only HV Battery: 230.4 Volt Sealed NiMH Battery Curb Weight: 3,571 - 3,792 lbs/1,620 - 1,720 kg Fuel Tank: 17 gals/66 liters Frame Material: Steel Unibody Body Material: Steel Panels except for Aluminum Engine Hood... -
Page 13: Lexus Hybrid Drive Operation
Vehicle Operation • With the IS300h, the gasoline engine may stop and start at any time while the READY indicator is • Never assume that the vehicle is shut off just because the engine is off. Always look for the READY indicator status. -
Page 14: Hybrid Vehicle (Hv) Battery Pack And Auxiliary Battery
Hybrid Vehicle (HV) Battery Pack and Auxiliary Battery The IS300h features a high voltage Hybrid Vehicle (HV) battery pack that contains sealed Nickel Metal Hydride (NiMH) battery modules. HV Battery Pack • The HV battery pack is enclosed in a metal case and is rigidly mounted to the spare tire area. -
Page 15: Hv Battery Pack Recycling
Auxiliary Battery • The IS300h contains a sealed lead-acid 12 Volt battery. This 12 Volt auxiliary battery powers the vehicle electrical system similar to a conventional vehicle. As with other conventional vehicles, the negative terminal of the auxiliary battery is grounded to the metal chassis of the vehicle. -
Page 16: High Voltage Safety
High Voltage Safety The HV battery pack powers the high voltage electrical system with DC electricity. Positive and negative orange colored high voltage power cables are routed from the battery pack, under the vehicle floor pan, routed along the propeller shaft and transmission tunnel to the inverter/converter. -
Page 17: High Voltage Safety (Continued)
High Voltage Safety (Continued) Service Plug Grip • The high-voltage circuit is cut by removing the service plug grip (see page 16). HV Battery Assembly Volt DC Volt DC Compressor Inverter/ Electric Converter Generator Electric Motor 0 Volts AC 3-Phase 12 Volt Auxiliary Hybrid Vehicle Computer Battery... -
Page 18: Precaution To Be Observed When Dismantling The Vehicle
Precaution to be observed when dismantling the vehicle WARNING: ・ The high voltage system may remain powered for up to 10 minutes after the vehicle is shut off or disabled. To prevent serious injury or death from severe burns or electric shock, avoid touching, cutting, or opening any orange high voltage power cable or high voltage component. -
Page 19: Spills
Spills The IS300h contains the same common automotive fluids used in other non-hybrid Lexus vehicles, with the exception of the NiMH electrolyte used in the HV battery pack. The NiMH battery electrolyte is a caustic alkaline (pH 13.5) that is damaging to human tissues. The electrolyte, however, is absorbed in the cell plates and will not normally spill or leak out even if a battery module is cracked. -
Page 20: Dismantling The Vehicle
Dismantling the vehicle The following 3 pages contain general instructions for use when working on an IS300h. Read these instructions before proceeding to the HV battery removal instructions on page 20. WARNING: ・ The high voltage system may remain powered for up to 10 minutes after the vehicle is shut off or disabled. - Page 21 4. Remove the No. 5 hybrid vehicle battery shield panel. (1) Remove the 3 nuts and No. 5 hybrid battery shield panel from the HV battery. 5. Remove the service plug grip. Caution: • Wear insulated gloves. • Remove the service plug grip to interrupt the high voltage circuit. •...
- Page 22 Instead, wash the eye(s) with a dilute boric acid solution or a large amount of water and seek medical care. 12. With the exception of the HV battery, remove parts by following procedures which are similar to conventional Lexus vehicles. For the removal of the HV battery, refer to the following pages.
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Page 24: Removal Of Hv Battery
Removal of HV battery WARNING: ・ Be sure to wear insulated gloves when handling high-voltage parts. ・ Even if the vehicle is shut off and the relays are off, be sure to remove the service plug grip before performing any further work. - Page 25 5. REMOVE LUGGAGE COMPARTMENT TRIM BOX (1) Remove the 6 clips. (2) Disengage the 3 guides and remove the luggage compartment trim box. 6. REMOVE NO. 5 HYBRID BATTERY SHIELD PANEL (1) Remove the 3 nuts and No. 5 hybrid battery shield panel from the HV battery.
- Page 26 For LHD: 8. REMOVE CONNECTOR COVER ASSEMBLY Caution: Wear insulated gloves. (1) Remove the 2 bolts and connector cover assembly from the inverter with converter assembly. For RHD: 9. CHECK TERMINAL VOLTAGE For LHD: Caution: Wear insulated gloves. (1) Using a voltmeter, measure the voltage between the terminals of the 2 phase connectors.
- Page 27 (3) Remove the 4 clips and front luggage compartment trim cover. Fastener 11. REMOVE FRONT LUGGAGE COMPARTMENT TRIM COVER (for Fold Down Seat Type) (1) Remove the 3 clips. (2) Disengage the 2 fasteners and remove the front luggage compartment trim cover. 12.
- Page 28 13. REMOVE REAR SEAT CUSHION ASSEMBLY (1) Lift up the front edge of the rear seat cushion assembly as shown in the illustration and disengage the 2 hooks on the front side of the rear seat cushion frame from the rear seat cushion lock hooks.
- Page 29 (3) Using a screwdriver, disengage the claw of the rear seat shoulder belt guide RH as shown in the illustration. (4) Disconnect the rear seat 3 point type outer belt assembly RH from the rear seat shoulder belt guide RH. (5) Using a screwdriver, disengage the claw of the rear seat shoulder belt guide LH as shown in the illustration.
- Page 30 18. REMOVE REAR SIDE SEATBACK White Housing Lock ASSEMBLY RH (for Fold Down Seat Type) Slide (1) w/ Rear Seat Side Airbag a) Disconnect the airbag connector. Notice: When disconnecting any airbag connector, take care not to damage the airbag wire Yellow CPA harness.
- Page 31 20. REMOVE REAR SEATBACK ASSEMBLY RH (for Fold Down Seat Type) (1) Fold the rear seatback assembly RH forward. (2) Disengage the 2 clips. Fastener (3) Disengage the 4 fasteners as shown in the illustration. (4) Remove the 3 bolts. (5) Disengage the guide to remove the rear seatback assembly RH.
- Page 32 (4) Remove the 3 bolts. (5) Disengage the guide to remove the rear seatback assembly LH. 22. REMOVE REAR SEAT SUB FLOOR PANEL (for Fold Down Seat Type) (1) Disengage the 3 clips to remove the rear seat sub floor panel. 23.
- Page 33 25. REMOVE LUGGAGE COMPARTMENT TRIM COVER LH Disengage the 4 claws and open the 2 covers. (2) Remove the 2 bolts and 2 rope hook assembly. (3) Remove the 6 clips.
- Page 34 (4) Disengage the clip. (5) Disengage the guide and remove the luggage compartment trim cover LH. 26. REMOVE LUGGAGE COMPARTMENT TRIM COVER RH Disengage the 4 claws and open the 2 covers. (2) Remove the 2 bolts and 2 rope hook assembly.
- Page 35 (3) Remove the 5 clips. (4) Disengage the clip. (5) Disengage the guide and remove the luggage compartment trim cover RH. 27. REMOVE REAR NO. 1 FLOOR CROSSMEMBER BRACE RH (1) Remove the 2 bolts, 2 nuts and rear No. 1 floor crossmember brace RH.
- Page 36 Service Plug Grip 29. REMOVE NO. 4 HYBRID BATTERY SHIELD PANEL Caution: Wear insulated gloves. Projection (1) Using the service plug grip, remove the Button battery cover lock striker from the No. 4 hybrid battery shield panel. Hint: Insert the projection of the service plug grip, turn the button of the battery cover lock striker Battery Cover Lock Striker counterclockwise, and release the lock.
- Page 37 31. SEPARATE NO. 3 HYBRID BATTERY INTAKE DUCT (1) Disengage the 3 claws. (2) Slide the No. 3 hybrid battery intake duct to separate the No. 3 hybrid battery intake duct from the battery cooling blower assembly as shown in the illustration. 32.
- Page 38 (2) Remove the 2 battery drain plugs as indicated by the arrows, in the order shown in the illustration. Push the battery drain While pushing the Remove the battery plug toward the front of battery drain plug, drain plug. the vehicle. disengage the rear claw.
- Page 39 When removing/installing/moving the HV battery, make sure not to tilt it more than 80°. The HV battery pack is recyclable. Contact your Lexus distributor (if included on the HV battery caution label) or contact the nearest Lexus dealer (see next page for samples of the HV battery caution label). Caution: After removing the HV battery, do not reinstall the service plug grip to the HV battery.
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Page 40: Hv Battery Caution Label
HV Battery Caution Label Except Russia: Russia:...
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Questions and answers
Water running out through overflow from windscreen washer reservoir on a Lexus 2014 model IS300h sports sedan?
@Gavyn Anderson
Water could run out through the overflow from the windscreen washer reservoir on a 2014 Lexus IS300h sports sedan if the reservoir is overfilled. When the fluid level exceeds the reservoir’s capacity, excess liquid may drain through the overflow outlet to prevent pressure buildup or damage.
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