Page 645 of 748

6458-2. Steps to take in an emergency
8
When trouble arises
RX350_U_OM48E90U ■
If “Maintenance Required Visit Your Dealer” is displayed (U.S.A. only)
Indicates that all maintenance is required to correspond to the driven distance
on the maintenance schedule
* .
Comes on approximately 5000 miles (8000 km) after the message has
been reset.
(The indicator will not wo rk properly unless the message has been reset.)
Perform the necessary maintenance. Please reset the message after the main-
tenance is performed. ( P. 565)
* : Refer to the separate “Scheduled Mainte nance” or “Owner’s Manual Supplement”
for the maintenance interval applicable to your vehicle. ■
System warning lights
The master warning light does not come on or flash in the following cases. Instead, a sep-
arate system warning light will come on al ong with a message shown on the multi-infor-
mation display. ●
“Antilock Brake System Malfunction Visit Your Dealer”:
The ABS warning light comes on. ( P. 6 3 4 )●
“Charging System Malfunction See Ow ner’s Manual” (F SPORT models):
The charging system warning light comes on. ( P. 6 3 4 )■
Warning buzzer
P. 6 3 8
NOTICE ■
“High Power Consumption Partial Limit On AC/Heater Operation” is frequently
shown
There is a possible malfunction relating to the charging system or the battery may be
deteriorating. Have the vehicle inspected by your Lexus dealer.
Page 666 of 748

666 8-2. Steps to take in an emergency
RX350_U_OM48E90U Connect the clamp at the other end of the negative cable to a solid, station-
ary, unpainted metallic point away from the battery and any moving parts,
as shown in the illustration.
Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximately 5 minutes to recharge the battery of
your vehicle.
Open and close any of the doors of your vehicle with the engine switch off.
Maintain the engine speed of the second vehicle and start the engine of your
vehicle by turning the engine switch to IGNITION ON mode.
Once the vehicle’s engine has started, remove the jumper cables in the exact
reverse order from which they were connected.
Once the engine starts, have the vehicle inspected at your Lexus dealer as soon
as possible. ■
Starting the engine when the battery is discharged
The engine cannot be started by push-starting. ■
To prevent battery discharge ●
Turn off the headlights and the audio system while the engine 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. ■
Charging the battery
The electricity stored in the battery will discharge gradually even when the vehicle is not
in use, due to natural discharg e and the draining effects of certain electrical appliances. If
the vehicle is left for a long time, the battery may discharge, and the engine may be
unable to start. (The battery recharges automatically during driving.) ■
When the battery is removed or discharged ●
In some cases, it may not be possible to unlock the doors using the smart access system
with push-button start when the battery is discharged. Use the wireless remote control
or the mechanical key to lock or unlock the doors. ●
The engine may not start on the first attempt after the battery has recharged but will
start normally after the second attempt. This is not a malfunction. ●
The engine switch mode is memorized by the vehicle. When the battery is recon-
nected, the system will return to the mode it was in before the battery was discharged.
Before disconnecting the battery, turn the engine switch off.
If you are unsure what mode the engine switch was in before the battery discharged, be
especially careful when reconnecting the battery. ●
The power back door must be initialized. ( P. 1 3 8 )4
4
5
6
7
Page 678 of 748

678 9-1. Specifications
RX350_U_OM48E90U * : The coolant capacity is a reference quantity.
If replacement is necessary, contact your Lexus dealer.Cooling system Capacity
*
Vehicles without towing package
9.5 qt. (9.0 L, 7.9 Imp. qt.)
Vehicles with towing package
10.5 qt. (9.9 L, 8.7 Imp. qt.)
Coolant type Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based
non-silicate, non-amine, non-nitrite, and non-
borate coolant with long-life hybrid organic
acid technology
Do not use plain water alone.
Ignition system (spark plug) Make DENSO FK20HBR8
Gap 0.03 in. (0.8 mm)
NOTICE ■
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Electrical system Battery
Open voltage at 68 F (20 C): 12.6 V or higher: Fully charged
12.2 — 12.4 V: Half charged
12.0 V or lower: Discharged
(Voltage is checked 20 minutes after the engine
and all lights ar e turned off.)
Charging rates 5 A max.
Page 747 of 748

747Alphabetical index
RX350_U_OM48E90U Warning buzzers
Approach warning ................. 309, 321
Downshifting ........................................ 232
Intuitive parking assist ......................334
Lane departure alert
function ................................... 284, 293
Light reminder ..................................... 243
Open door ............................................. 128
Pre-collision warning ......................... 271
Seat belt reminder ............................ 636
Vehicle sway warning ........ 285, 294
Warning lights
ABS ...........................................................634
Brake hold operated indicator... 635
Brake system........................................634
Charging system................................634
Electric power steering.................. 635
LDA indicator ..................................... 635
LKA indicator...................................... 635
Low fuel level ...................................... 636
Malfunction indicator lamp ...........634
Master warning light........................ 636
Parking brake indicator ................. 635
PCS warning light ............................ 636
Seat belt reminder light.................. 636
Slip indicator ........................................ 635
SRS ............................................................634
Tire pressure ....................................... 636
Warning messages ................................641
Washer
Checking............................................... 583
Preparing and checking
before winter ................................... 380
Switch.......................................... 250, 256
Washing and waxing........................... 556 Weights
Cargo capacity.......................200, 674
Load limits ................................. 204, 674
Weights .................................................. 674
Wheels ..................................................... 596
Replacing wheels ..............................596
Size .......................................................... 680
Window glasses...................................... 177
Window lock switch.............................. 177
Windows
Power windows.................................... 177
Rear window defogger ................... 501
Washer ...................................... 250, 256
Windshield wiper de-icer ................. 500
Windshield wiper inserts ....................601
Windshield wipers ............................... 250
Intermittent windshield wipers ....250
Rain-sensing windshield
wipers..................................................... 251
Replacing a windshield wiper
insert ...................................................... 601
Winter driving tips ............................... 380
Wireless charger...................................524
Wireless communication .......438, 448
Wireless remote control ..................... 120
Battery-saving function .................... 147
Locking/Unlocking ............................120
Panic mode ..............................................121
Replacing the battery ......................603
WMA disc................................................422
XM ®
Satellite Radio ............................ 416W
X
Page:
< prev 1-8 9-16 17-24