2017 LEXUS LS600H headlights

5977-2. Steps to take in an emergency
7
When trouble arises
LS600h/LS600hL_EE(OM50G20E)
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (P. 605)
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( P. 96)
●There may be a malfunction in the steering lock system.
●The hybrid system may be malfunctioning due to an electrical problem
such as electronic key battery depletion or a blown fuse. However,
depending on the type of malfunction, an interim measure is available
to start the hybrid system. ( P. 598)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( P. 607)
●The 12-volt battery terminal connections may be loose or corroded.
If the hybrid system will not start
Reasons for the hybrid system not starting vary depending on the situa-
tion. Check the following and perf orm the appropriate procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 247)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.

5987-2. Steps to take in an emergency
LS600h/LS600hL_EE(OM50G20E)
One of the following may be the cause of the problem:
●One or both of the 12-volt battery terminals may be disconnected.
●The 12-volt battery may be discharged. (P. 607)
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional if the problem cannot be repaired, or if repair procedures
are unknown.
When the hybrid system does not start, the following steps can be used as
an interim measure to start the hybrid system if the power switch is func-
tioning normally:
Turn the power switch to ON mode ( P. 248) and check that the
parking brake is set.
Shift the shift lever to P.
Turn the power switch to ACCESSORY mode.
Press and hold the power switch for about 15 seconds while depressing
the brake pedal firmly.
Even if the hybrid system can be star ted using the above steps, the system
may be malfunctioning. Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly qualified and equipped profes-
sional.
The interior lights and headlights do not turn on, or the horn does
not sound.
Emergency start function
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6097-2. Steps to take in an emergency
7
When trouble arises
LS600h/LS600hL_EE(OM50G20E)
■Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio system while the hybrid system is off.
●Turn off any unnecessary electrical components when the vehicle is running at a
low speed for an extended period, such as in heavy traffic.
■When the 12-volt battery is removed or discharged
The hybrid system may not start. ( P. 504)
■Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even when the
vehicle is not in use, due to natural discharge and the draining effects of certain elec-
trical appliances. If the vehicle is left for a long time, the 12-volt battery may dis-
charge, and the hybrid system may be unable to start. (The 12-volt battery recharges
automatically while the hybrid system is operating.)
■When recharging or replacing the 12-volt battery
In some cases, it may not be possible to unlock the doors using the smart entry &
start system when the 12-volt battery is discharged. Use the wireless remote control
or the mechanical key to lock or unlock the doors.
■If the 12-volt battery is discharged
The information stored in the computer will be deleted.
If the 12-volt battery is discharged, have the vehicle inspected by your Lexus dealer.

661Alphabetical index
LS600h/LS600hL_EE(OM50G20E)
Front seats ................................................ 187
Adjustment..............................................187
Cleaning................................................ 480
Climate control seat .........................456
Correct driving posture .................... 42
Driving position memory ............... 207
Head restraints...................................... 214
Power easy access system ............ 190
Seat position memory ..................... 207
Front turn signal lights......................... 262
Replacing light bulbs........................ 543
Turn signal lever ................................. 262
Fuel .............................................................285
Capacity ................................................. 622
Fuel gauge................................................ 115
Information ............................................ 632
Refueling ................................................285
Type .............................................. 622, 632
Warning light ...................................... 558
Fuel consumption
Average fuel consumption ............. 124
Average fuel consumption
after refueling ..................................... 124
Current fuel consumption............... 124
Fuel filler door ........................................285
If the fuel filler door
cannot be opened ........................ 288
Refueling ................................................285
Fuses ..........................................................535
Gauges ........................................................ 115
Glove box................................................ 433
Head restraints ........................................ 214
Active head restraint.......................... 215
Adjustment ............................................ 214
Pre-crash intelligent head
restraint ............................................... 360
Headlight cleaner................................. 284
Headlights ............................................... 269
Adaptive Front-lighting
System (AFS)..................................... 271
Adaptive High-beam System
(AHS) ...................................................273
Follow me home system................ 270
Light switch........................................... 269
Replacing light bulbs ....................... 543
Heaters
Front automatic air
conditioning system ..................... 399
Heated steering wheel ................... 454
Outside rear view mirrors ............ 425
Rear air conditioning system ......... 418
Seat heaters.......................................... 457
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