2018 LEXUS LS500 coolant level

418 7-2. Steps to take in an emergency
LS500_OM_OM50F54U_(U) ■
Brake system warning light (warning buzzer)
■
Brake system warning light (warning buzzer)
■
High coolant temperature warning light *
(warning buzzer)*
: This light illuminates on the multi-information display.If a warning light turns on or a warning buzzer soundsCalmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, bu t then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by your Lexus dealer.
Actions to the warning lights or warning buzzers Warning light Details/Actions(U.S.A.)
or (red)
(Canada) Indicates that:
 The brake fluid level is low; or
 The brake system is malfunctioning
→ Immediately stop the vehicle in a safe place and contact your Lexus
dealer. Continuing to drive the vehicle may be dangerous.
Indicates that the brake pads are worn out (only the right-side pads can
be detected)
→ Have the vehicle inspected by your Lexus dealer.
Warning light Details/Actions
(yellow)
Indicates a malfunction in:
 The electronically controlled br ake system (if equipped); or
 The parking brake system
→ Have the vehicle inspected by your Lexus dealer immediately.
Warning light Details/Actions
Indicates that the engine coolant temperature is too high
→ Immediately stop the vehicle in a safe place.
Handling method ( → P.443)

4437-2. Steps to take in an emergency
LS500_OM_OM50F54U_(U) 7
When trouble arises
1 Stop the vehicle in a safe place and
turn off the air conditioning system,
and then stop the engine.
2 If you see steam:
Carefully lift the hood after the
steam subsides.
If you do not see steam:
Carefully lift the hood.
3 After the engine has cooled down
sufficiently, inspect the hoses and radiator core (radiator) for any
leaks.
Radiators
Cooling fan If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4 The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir.
 Engine
Reservoir
“F” line
“L” line
Coolant inlet cap
 IntercoolerIf your vehicle overheats The following may indicate that
your vehicle is overheating.
 The engine coolant temperature
gauge ( → P.69, 72) is in the red
zone or a loss of engine power is
experienced. (For example, the
vehicle speed does not increase.)
 “Engine Coolant Temp High Stop
in a Safe Place See Owner’s
Manual” is shown on the
multi-information display.
 Steam comes out from under the
hood.
Correction procedures A
B
A
B
C
D

4638-1. Specifications
LS500_OM_OM50F54U_(U) 8
Vehicle specifications Curb weight The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil
and coolant, and if so equipped, air conditioning
and additional weight optional engine
Maximum loaded vehicle weight The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight 150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1 *
that fol-
lows
Occupant distribution Distribution of occupants in a vehicle as specified in
the third column of Table 1 *
below
Production options weight The combined weight of installed regular produc-
tion options weighing over 5 lb. (2.3 kg) in excess of
the standard items which they replace, not previ-
ously considered in curb weight or accessory
weight, including heavy duty brakes, ride levelers,
roof rack, heavy duty battery, and special trim
Rim A metal support for a tire or a tire and tube assem-
bly upon which the tire beads are seated
Rim diameter (Wheel diameter) Nominal diameter of the bead seat
Rim size designation Rim diameter and width
Rim type designation The industry manufacturer’s designation for a rim
by style or code
Rim width Nominal distance between rim flanges
Vehicle capacity weight (Total load
capacity) The rated cargo and luggage load plus 150 lb. (68
kg) times the vehicle’s de signated seating capacity
Vehicle maximum load on the tire The load on an individual ti re that is determined by
distributing to each axle its share of the maximum
loaded vehicle weight, and dividing by twoTire related term Meaning

5091-1. What to do if... (Troubleshooting)
LS500_OM_OM50F54U_(U) 509Alphabetical Index
Brake Override System ......................... 420
Brake system ................................................ 418
Charging system .........................................419
Downshifting .......................................168, 169
Drive-Start Control .................................. 420
Electric power steering ............................ 421
Engine ...............................................................419
High coolant temperature ..................... 418
Intuitive parking assist.................. 263, 423
LKA (Lane-Keeping Assist)....... 231, 422
Low engine oil pressure...........................419
LTA (Lane Tracing Assist).......... 221, 422
Open door.............................................. 97, 99
Open window .............................................. 140
PKSA (Parking Support Alert) ........... 257
PKSB (Parking Support Brake) ......... 424
Pop Up Hood ............................................. 420
Pre-collision braking......................200, 212
RCD (Rear Camera Detection) ........ 423
RCTA (Rear Cross Traffic Alert) ...... 423
Seat belt ................................................ 421, 422
Warning lights................................................ 418
ABS .................................................................. 420
Brake hold operated indicator ........... 425
Brake Override System ......................... 420
Brake system ................................................ 418
Charging system .........................................419
Drive-Start Control .................................. 420
Electric power steering ............................ 421
High coolant temperature ..................... 418
Intuitive parking assist OFF indicator423
LKA indicator .............................................. 422
Low engine oil pressure...........................419
Low fuel level ................................................. 421
LTA indicator ............................................... 422
Malfunction indicator lamp.....................419
Master warning light ................................ 425
Parking brake indicator .......................... 425
PKSB OFF indicator ................................ 424
Pop Up Hood ............................................. 420
Pre-collision system ................................. 424
RCD OFF indicator ................................. 423 RCTA OFF indicator ............................... 423
Seat belt reminder light................. 421, 422
Slip indicator ................................................. 424
SRS ..................................................................... 419
Tire pressure ................................................ 422
Warning messages ..................................... 428
Warning reflector storage belt.............. 340
Washer
Checking ...................................................... 383
Preparing and checking before winter
..........................................................................299
Switch................................................................180
Washing and waxing.................................. 362
Weight
Cargo capacity ............................................ 158
Load limits ...................................................... 158
Weight............................................................ 448
Wheels
Replacing wheels ...................................... 396
Size ....................................................................454
Window lock switch ...................................... 141
Windows
Power windows ........................................... 139
Rear window defogger.............................314
Washer ............................................................180
Windshield wiper de-icer ..........................319
Windshield wipers
Position............................................................. 183
Rain-sensing windshield wipers .......... 180
Winter driving tips....................................... 299
Wireless remote control
Battery-Saving Function..........................108
Locking/Unlocking ..................................... 94
Replacing the battery .............................. 403