brake fluid LEXUS RX350 2019 User Guide

594 7-3. Do-it-yourself maintenance
RX350/RX350L_UEngine compartment
Washer fluid tank (  P. 603)
Engine oil filler cap (  P. 596)
Engine oil level dipstick
(  P. 595)
Engine coolant reservoir
(  P. 598) Battery (  P. 601)
Brake fluid reservoir (  P. 600)
Fuse box (  P. 625)
Radiator (  P. 599)
Condenser (  P. 599)
Electric cooling fans1
2
3
4 5
6
7
8
9
10

600 7-3. Do-it-yourself maintenance
RX350/RX350L_U ■
Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN” lines
on the tank.
■
Adding fluid
Make sure to check the fluid type and prepare the necessary item. ■
Brake fluid can absorb moisture from the air
Excess moisture in the brake fluid can cause a dangerous loss of braking efficiency. Use
only newly opened brake fluid.Brake fluid
Fluid type FMVSS No.116 DOT 3 or SAE J1703 brake fluid
Items Clean funnel
WARNING ■
When filling the reservoir
Take care as brake fluid can harm your hands and eyes and damage painted surfaces.
If fluid gets on your hands or in your ey es, flush the affected area with clean water
immediately.
If you still experience di scomfort, see a doctor.
NOTICE ■
If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads wear out or
when the fluid level in the accumulator is high.
If the reservoir needs frequent ref illing, there may be a serious problem.

652 8-2. Steps to take in an emergency
RX350/RX350L_U ●
Fluid leaks under the vehicle
(Water dripping from the air co nditioning after use is normal.)●
Flat-looking tires or uneven tire wear ●
Engine coolant temperature gauge needle continually points higher than nor-
mal ●
Changes in exhaust sound ●
Excessive tire squeal when cornering ●
Strange noises related to the suspension system ●
Pinging or other noises related to the engine ●
Engine missing, stumbling or running roughly ●
Appreciable loss of power ●
Vehicle pulls heavily to one side when braking ●
Vehicle pulls heavily to one side when driving on a level road ●
Loss of brake effectiveness, spongy f eeling, pedal almost touches the floorIf you think something is wrong If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

654 8-2. Steps to take in an emergency
RX350/RX350L_UIf a warning light turns on or a warning buzzer
sounds Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, but then goes off, this does not necessar-
ily indicate a malfunction in the system . However, if this continues to occur,
have the vehicle inspecte d by your Lexus dealer.
Warning light and warning buzzer list Warning light Warning light/Details/Actions(U.S.A.)
(Canada)
Brake system warning light
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.
Brake system warning light
Indicates a malfunction in the electric parking brake
 Have the vehicle inspected by your Lexus dealer immediately. (If equipped)
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
 Immediately stop the vehicle in a safe place and contact your
Lexus dealer. Continuing to drive the vehicle may be dangerous. (U.S.A.)
(Canada)
Malfunction indicator lamp
Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system
 Have the vehicle inspected by your Lexus dealer immediately.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
 Have the vehicle inspected by your Lexus dealer immediately. (U.S.A.)
(Canada)
ABS warning light
Indicates a malfunction in:
• The ABS; or
• The brake assist system
 Have the vehicle inspected by your Lexus dealer immediately.

704 9-1. Specifications
RX350/RX350L_U * : Minimum pedal clearance when depressed wi th a force of 110 lbf (490 N, 50.0 kgf)
while the engine is running. 
Type ABrakes Pedal clearance
* 3.4 in. (86 mm) Min.
Brake pad wear limit 0.04 in. (1.0 mm)
Pedal free play 0.04 — 0.24 in. (1.0 — 6.0 mm)
Fluid type FMVSS No. 116 DOT 3 or SAE J1703
Steering Free play Less than 1.2 in. (30 mm)
Tires and wheels Tire size 235/65R18 106V, T165/90D18 107M (spare)
Tire inflation pressure
(Recommended cold tire
inflation pressure) 
Front tire
33 psi (230 kPa, 2.3 kgf/cm 2
or bar) 
Rear tire
33 psi (230 kPa, 2.3 kgf/cm 2
or bar) 
Spare tire
60 psi (420 kPa, 4.2 kgf/cm 2
or bar)
Driving at high speeds (above 100 mph [160 km/h])
(in countries where such speeds are permitted by
law)
Add 5 psi (30 kPa, 0.3 kgf/cm 2
or bar) to the
front and rear tires. Never exceed the maximum
cold tire inflation pressu re indicated on the tire
sidewall.
Wheel size 18  8 J, 18  4 T (spare)
Wheel nut torque 76 ft•lbf (103 N•m, 10.5 kgf•m)

758 Alphabetical index
RX350/RX350L_U Back door
Power back door ................................ 130
Touchless power back door ..........132
Wireless remote control ................. 130
Back-up lights
Replacing light bulbs ....................... 630
Wattage ................................................. 705
Battery
Battery checking ................................. 601
If the battery is discharged ........... 687
Preparing and checking before
winter ................................................... 384
Warning light ...................................... 654
Blind Spot Monitor (BSM)..................313
Blind Spot Monitor function ...........317
Rear Cross Traffic
Alert function ......................................321
Bluetooth ®
.............................................. 476
Audio system .......................................453
Hands-free system
(for cellular phone) ....................... 455 Bottle holders ........................................ 533
Brake
Brake Hold ...........................................250
Fluid .......................................................... 704
Parking brake .......................................247
Warning light ....................................... 654
Brake assist ............................................. 378
Brake Hold.............................................. 250
Warning light .......................................655
Break-in tips ........................................... 204
Brightness control
Instrument panel light control ........88
BSM (Blind Spot Monitor) ................. 313
Blind Spot Monitor function........... 317
Rear Cross Traffic Alert
function.................................................. 321B

763Alphabetical index
RX350/RX350L_U Flat tire ...................................................... 666
Floor mats ................................................... 28
Fluid
Automatic transmission ..................703
Brake ........................................................704
Washer .................................................. 603
Fog lights
Replacing light bulbs ....................... 630
Switch...................................................... 260
Front automatic air
conditioning system .........................503
Front passenger footwell hooks ..... 554
Front passenger occupant
classification system .............................47
Front passenger’s seat belt
reminder light ..................................... 656
Front seat heaters................................. 522
Front seats .................................................156
Adjustment ............................................. 156
Cleaning .................................................. 581
Correct driving posture ....................30
Driving position memory ................. 172
Head restraints ...................................... 177
Power easy access system ............. 172
Seat heaters .......................................... 522
Seat position memory........................ 172 Front side marker lights
Light switch........................................... 252
Replacing light bulbs .......................630
Wattage ................................................. 705
Front turn signal lights
Replacing light bulbs .......................630
Turn signal lever ................................. 246
Wattage ................................................. 705
Fuel
Capacity.................................................700
Fuel gauge ............................................... 86
Information............................................ 706
Refueling ................................................ 269
Type..........................................................700
Fuel filler door.........................................269
Refueling ................................................ 269
When the fuel filler door
cannot be opened ..........................272
Fuses.......................................................... 625F