Page 492 of 676
4926-3. Do-it-yourself maintenance
LS600h/LS600hL_EE(OM50G20E)
*: For right-hand drive vehicles:
They are located on the opposite side of the engine compartment.
■12-volt battery
P. 502
Engine compartment
* *
*
Power control unit coolant res-
ervoir ( P. 499)
Engine oil level dipstick
( P. 495)
Engine oil filler cap ( P. 496)
Fuse boxes ( P. 535)
Washer fluid tank ( P. 501)
Power control unit coolant radi-
ator ( P. 500)
Electric cooling fans
Condenser ( P. 500)
Engine coolant radiator
( P. 500)
Engine coolant reservoir
( P. 498)
1
2
3
4
5
6
7
8
9
10
Page 535 of 676
5356-3. Do-it-yourself maintenance
6
Maintenance and care
LS600h/LS600hL_EE(OM50G20E)
Turn the power switch off.
Open the fuse box cover.
Engine compartment (type A fuse box)
Remove the engine compart-
ment cover ( P. 493) and push
the tab in and lift the lid off.
Engine compartment: type B fuse box (left-hand drive vehicles)
Remove the engine compart-
ment cover ( P. 493) and push
the tab in and lift the lid off.
Engine compartment: type B fuse box (right-hand drive vehicles)
Remove the engine compart-
ment cover ( P. 493) and push
the tab in and lift the lid off.
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
1
2
Page 536 of 676
5366-3. Do-it-yourself maintenance
LS600h/LS600hL_EE(OM50G20E)
Engine compartment: type C fuse box (left-hand drive vehicles)
Remove the engine compart-
ment cover ( P. 493) and push
the tab in and lift the lid off.
Engine compartment: type C fuse box (right-hand drive vehicles)
Remove the engine compart-
ment cover ( P. 493) and push
the tab in and lift the lid off.
Engine compartment: fuse box near the power control unit (left-
hand drive vehicles)
There are high voltage parts and
wiring near the fuse box. For
inspection and replacement of
the fuses, contact any authorized
Lexus dealer or repairer, or
another duly qualified and
equipped professional.
Page 537 of 676
5376-3. Do-it-yourself maintenance
6
Maintenance and care
LS600h/LS600hL_EE(OM50G20E)
Engine compartment: fuse box near the power control unit (right-
hand drive vehicles)
There are high voltage parts and
wiring near the fuse box. For
inspection and replacement of
the fuses, contact any authorized
Lexus dealer or repairer, or
another duly qualified and
equipped professional.
Driver’s side instrument panel
Remove the lid.
Passenger’s side instrument panel
Remove the lid.
Page 538 of 676
5386-3. Do-it-yourself maintenance
LS600h/LS600hL_EE(OM50G20E)
Trunk (type A fuse box)
Remove the 12-volt battery cover
( P. 502) and then remove the
lid.
Trunk (type B fuse box)
Remove the cover.
Trunk (type C fuse box)
Remove the 12-volt battery cover
( P. 502) and then remove the
terminal cover.
Remove the fuse with the pullout
tool.
Only type A fuse can be removed
using the pullout tool.
3
Page 539 of 676
5396-3. Do-it-yourself maintenance
6
Maintenance and care
LS600h/LS600hL_EE(OM50G20E)
Check if the fuse is blown.
Normal fuse
Blown fuse
Type A and B:
Replace the blown fuse with a new fuse of an appropriate amperage rating. The
amperage rating can be found on the fuse box lid.
Type C and D:
Contact any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional.
4
1
2
Type AType B
Type CType D
Page 540 of 676

5406-3. Do-it-yourself maintenance
LS600h/LS600hL_EE(OM50G20E)
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been replaced, a bulb may need
replacement. ( P. 541)
●If the replaced fuse blows again, have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional.
■If there is an overload in a circuit
The fuses are designed to blow, protect ing the wiring harness from damage.
CAUTION
■To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to the vehicle, and possibly a fire or injury.
●Never use a fuse of a higher amperage rating than that indicated, or use any
other object in place of a fuse.
●Always use a genuine Lexus fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
●Do not modify the fuses or fuse boxes.
■Fuse box near the power control unit
Never check or replace the fuses as there are high voltage parts and wiring near
the fuse box.
Doing so may cause electric shock, resulting in death or serious injury.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by any authorized
Lexus dealer or repairer, or another duly qualified and equipped professional as
soon as possible.
Page 661 of 676

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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