Lexus GS450h - Turning the LKA System on

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GS450h_OM_OM30E26U_(U)

273

4-5. Using the driving support systems

4

Driving

Press the “LKA” switch to activate

the system.

“LKA” indicator will come on.

Press the switch again to turn the LKA

system off.

The LKA system will revert to off each

time the power switch is turned to ON

mode.

Turning the LKA system on

Table of Contents

Table of Contents2
For Your Information8
- Main Owner’s Manual8
- Accessories, Spare Parts and Modification of Your Lexus8
- Noise from under Vehicle after Turning off the Hybrid System8
- Installation of a Mobile Two-Way Radio System9
- Vehicle Data Recordings10
- Event Data Recorder11
- Scrapping of Your Lexus12
- Perchlorate Material12
- General Precautions While Driving12
- General Precaution Regarding Children’s Safety12
Reading this Manual14
How to Search15
Exterior16
Pictorial Index16
- Stop Lights17
- Pictorial Index17
- Instrument Panel18
- Switches20
- Interior24
For Safety and Security27
1-1. for Safe Use27
- Before Driving28
- For Safety Drive30
- SRS Airbags38
- Front Passenger Occupant Classification System49
- Safety Information for Children56
- Child Restraint Systems57
- Installing Child Restraints61
- Exhaust Gas Precautions71
- Hybrid System Features72
1-2. Hybrid System72
- During Normal Driving73
- Vehicle Proximity Notification System73
- When Accelerating Sharply73
- When Stopped/During Start off73
- Charging the Hybrid Battery (Traction Battery)74
- Conditions in Which the Gasoline Engine May Not Stop74
- EV Indicator74
- Regenerative Braking74
- After the 12-Volt Battery Has Discharged or Has Been Changed or Removed75
- Maintenance, Repair, Recycling, and Disposal75
- Sounds and Vibrations Specific to a Hybrid Vehicle75
- Hybrid System Precautions76
- Immobilizer System81
- System Maintenance81
Theft Deterrent System81
- Certifications for the Immobilizer System82
- To Ensure the System Operates Correctly82
- Deactivating or Stopping the Alarm83
- Setting the Alarm System83
- Alarm-Operated Door Lock84
- Items to Check before Locking the Vehicle84
- Triggering of the Alarm84
- Instrument Cluster85
- Center Panel86
- Instrument Cluster86
- Warning Lights and Indicators86
- Operation of each Component119
- Using the Mechanical Key120
3-1. Key Information120
- Keys120
Opening, Closing and Locking the Doors and Trunk123
- Smart Access System with Push-Button Start123
- Wireless Remote Control136
- Front Seats150
- Adjustment Procedure150
3-3. Adjusting the Seats150
- Power Easy Access System151
- Seat Adjustment151
- When Adjusting the Seat Position151
- When Adjusting the Seat Positions151
- Driver’s Seat152
- Driving Position Memory152
- Head Restraints158
- Steering Wheel161
- The Steering Wheel Can be Adjusted When161
Adjusting the Steering Wheel and Mirrors161
- Inside Rear View Mirror162
- Outside Rear View Mirrors164
- Power Windows167
  - Opening and Closing Procedures167
  - Window Lock Switch167
Opening, Closing the Windows and Moon Roof167
- Jam Protection Function168
- Operating the Power Windows after Turning the Hybrid System off168
- The Power Windows Can be Operated When168
- When the Power Window Does Not Close Normally168
- Door Lock Linked Window Operation169
- Power Windows Open Warning Buzzer169
- Closing the Windows170
- Moon Roof171
4-1. before Driving175
- Driving the Vehicle176
- Cargo and Luggage187
- Vehicle Load Limits190
  - Total Load Capacity and Seating Capacity190
  - Overloading the Vehicle190
- Trailer Towing191
- Dinghy Towing192
- To Avoid Serious Damage to Your Vehicle192
Driving Procedures193
- Power (Ignition) Switch193
- Hybrid Transmission203
- Turn Signal Lever209
- Parking Brake211
- Horn216
Operating the Lights and Wipers217
- Headlight Switch217
- Fog Light Switch222
- Windshield Wipers and Washer223
- Headlight Cleaner Switch230
- Opening the Fuel Tank Cap231
- Cruise Control236
- Setting the Vehicle Speed236
4-5. Using the Driving Support Systems236
- Adjusting the Set Speed237
- Canceling and Resuming the Constant Speed Control237
- Accelerating after Setting the Vehicle Speed238
- Automatic Cruise Control Cancelation238
- Cruise Control Can be Set When238
- If the Warning Message for the Cruise Control Is Shown on the Multi-Information Display238
- Situations Unsuitable for Cruise Control239
- To Avoid Operating the Cruise Control by Mistake239
- Dynamic Radar Cruise Control240
- Dynamic Radar Cruise Control with Full-Speed Range255
- Driving Mode Select Switch281
- Driving Assist Systems284
- For Economical and Ecological Driving, Pay Attention to the Following Points317
- Hybrid Vehicle Driving Tips317
- Preparation for Winter319
- Winter Driving Tips319
- Interior Features325
Remote Touch Screen Remote Touch/12.3-Inch325
- Remote Touch/12.3-Inch Display326
Using the Air Conditioning System and Defogger335
- Front Automatic Air Conditioning System335
- Rear Air Conditioning System355
- Rear Window and Outside Rear View Mirror Defoggers360
  - Operating Conditions360
  - When the Outside Rear View Mirror Defoggers Are on360
- Windshield Wiper De-Icer361
- When the Windshield Wiper De-Icer Is on362
- Interior Lights List363
Using the Interior Lights363
- Interior Light364
- Personal Lights364
5-4. Using the Storage Features366
- Items that Should Not be Left in the Storage Spaces367
- When Driving or When the Storage Compartments Are Not in Use367
- Glove Box368
Other Interior Features375
- Clock376
- Ashtrays377
  - When Not in Use377
  - To Prevent Fire377
- Power Outlets378
- Heated Steering Wheel380
- Seat Heaters/Seat Ventilators382
- Armrest386
  - From the Front Seats387
  - From the Rear Seats (if Equipped)387
- Rear Sunshade/Rear Door Sunshades387
- Coat Hooks390
- Assist Grips391
- To Prevent Damage to the Assist Grip391
- Utility Hook392
- Utility Hook Weight Capacity392
- Garage Door Opener393
- Lexus Enform Safety Connect400
- Maintenance and Care407
Do-It-Yourself Maintenance423
- If You Remove the Air Cleaner Filter425
- Safety Glasses425
- When Working Near the Electric Cooling Fans or Radiator Grille425
- When Working on the Engine Compartment425
- Hood426
- Pre-Driving Check426
- Positioning a Floor Jack427
- Tire Inflation Pressure453
- Air Conditioning Filter458
- Electronic Key Battery460
- Checking and Replacing Fuses462
- Headlight Aim477
- When Trouble Arises493
7-1. Essential Information493
- Emergency Flashers494
- If Your Vehicle Has to be Stopped in an Emergency495
- If the Hybrid System Has to be Turned off While Driving495
- If Your Vehicle Needs to be Towed496
- Situations Need to Contact Dealers before Towing496
7-2. Steps to Take in an Emergency496
- Towing with a Sling-Type Truck497
- Towing with a Wheel-Lift Type Truck497
- Emergency Towing498
- Using a Flatbed Truck498
- Installing Towing Eyelet499
- Installing Towing Eyelet to the Vehicle500
- Wheel Nut Wrench500
- When Towing the Vehicle500
- While Towing500
- To Prevent Body Damage When Towing with a Sling-Type Truck501
- To Prevent Damage to the Vehicle When Towing Using a Wheel-Lift Type Truck501
- Audible Symptoms502
- If You Think Something Is Wrong502
  - Operational Symptoms502
  - Visible Symptoms502
- If a Warning Light Turns on or a Warning Buzzer Sounds503
  - Stop the Vehicle Immediately. Continuing to Drive the Vehicle May be Dangerous503
  - Have the Vehicle Inspected by Your Lexus Dealer Immediately504
  - Stop the Vehicle Immediately504
  - Follow the Correction Procedures506
  - Electric Power Steering System Warning Light (Warning Buzzer)508
  - Front Passenger Detection Sensor, Seat Belt Reminder and Warning Buzzer508
  - If the Malfunction Indicator Lamp Comes on While Driving508
  - SRS Warning Light508
  - If the Tire Pressure Warning Light Frequently Comes on after Blinking for 1 Minute509
  - The Tire Pressure Warning Light May Come on Due to Natural Causes509
  - Warning Buzzer509
  - When a Tire Is Replaced with a Spare Tire509
  - If a Blowout or Sudden Air Leakage Should Occur510
  - If both the ABS and the Brake System Warning Lights Remain on510
  - If the Tire Pressure Warning Light Comes on510
  - When the Electric Power Steering System Warning Light Comes on510
  - Maintenance of the Tires511
  - To Ensure the Tire Pressure Warning System Operates Properly512
- If a Warning Message Is Displayed513
  - Have the Vehicle Inspected Immediately515
  - Open Door Warning Message529
  - The LKA (Lane-Keeping Assist) Lane Departure Warning Function (if Equipped)529
  - Warning Message in Radar Cruise Mode (if Equipped)529
  - Other Displayed Messages533
  - Have the Malfunction Repaired Immediately534
  - Before Jacking up the Vehicle541
- If You Have a Flat Tire541
  - Location of the Spare Tire, Jack and Tools542
  - Using the Tire Jack543
  - Taking out the Jack and Jack Handle544
  - Taking out the Spare Tire545
  - When Storing the Spare Tire545
  - Replacing a Flat Tire546
  - Installing the Spare Tire549
  - If You Have a Flat Rear Tire on a Road Covered with Snow or Ice551
  - The Compact Spare Tire551
  - When the Compact Spare Tire Is Equipped551
  - When Using the Compact Spare Tire551
  - After Using the Tools and Jack553
  - Driving with Tire Chains and the Compact Spare Tire553
  - Speed Limit When Using the Compact Spare Tire553
  - When Replacing the Tires553
- If the Hybrid System will Not Start554
  - The Hybrid System will Not Start Even Though the Correct Starting Procedure Is Being Followed554
  - The Interior Lights and Headlights Are DIM, or the Horn Does Not Sound or Sounds at a Low Volume554
  - Emergency Start Function555
  - The Interior Lights and Headlights Do Not Turn On, or the Horn Does Not Sound555
- If the Shift Lever Cannot be Shifted from P556
- Before Releasing the Parking Brake Manually557
- If the Parking Brake Cannot be Released557
  - Releasing the Parking Brake Manually557
  - Manual Operation of the Parking Brake558
  - When Releasing the Parking Brake Manually558
- If the Electronic Key Does Not Operate Properly559
  - Locking and Unlocking the Doors, Unlocking the Trunk and Key Linked Functions559
  - Replacing the Key Battery561
  - When the Electronic Key Does Not Work Properly561
  - When Using the Mechanical Key and Operating the Power Windows and Moon Roof561
- If the 12-Volt Battery Is Discharged562
  - Charging the 12-Volt Battery563
  - Starting the Hybrid System When the 12-Volt Battery Is Discharged563
  - Avoiding 12-Volt Battery Fires or Explosions564
  - When Recharging or Replacing the 12-Volt Battery564
  - 12-Volt Battery Precautions565
  - After Recharging the 12-Volt Battery565
  - Correction Procedures566
  - If the Needle of the Engine Coolant Temperature Gauge Enters the Red Zone566
- If Your Vehicle Overheats566
  - If “Hybrid System Overheat” Is Shown on the Multi-Information Display568
  - To Prevent Damage to the Cooling System570
  - When Adding Engine/Power Control Unit Coolant570
  - When Inspecting under the Hood of Your Vehicle570
- If the Vehicle Becomes Stuck571
  - When It Is Difficult to Free the Vehicle571
  - To Avoid Damaging the Transmission and Other Components572
  - When Attempting to Free a Stuck Vehicle572
- Vehicle Specifications573
Specifications Maintenance Data573
- Maintenance Data (Fuel, Oil Level, Etc.)574
- Fuel Information584
- Tire Information587
Customization599
- Customizable Features599
- Items to Initialize609
Initialization609
- For Owners611
Reporting Safety Defects for U.S. Owners612
Seat Belt Instructions for Canadian Owners (in French)613
SRS Airbag Instructions for Canadian Owners (in French)615
Manual624
Headlight Aim Instructions for Canadian Owners (in French)624
Manual625
Manual626
Index627
What to Do if627
(Troubleshooting)627
- For Information Regarding the Equipment Listed Below, Refer to the627
Alphabetical Index634
Gas Station Information652

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