2015 LEXUS RX350 4WD

2692-4. Using other driving systems
2
When driving Driving assist systems To help enhance driving safety and performance, the following systems
operate automatically in response to various driving situations. Be aware,
however, that these systems are supplementary and should not be relied
upon too heavily when operating the vehicle.
■ ABS (Anti-lock Brake System) Helps to prevent wheel lock when the brakes are applied suddenly, or if
the brakes are applied while driving on a slippery road surface
■ Brake assist Generates an increased level of braking force after the brake pedal is
depressed, when the system detects a panic stop situation
■ VSC (Vehicle Stability Control) Helps the driver to control skidding when swerving suddenly or turning on
slippery road surfaces
■ TRAC (Traction Control) Helps to maintain drive power and prevent the drive wheels from spinning
when starting the vehicle or accelerating on slippery roads
■ Hill-start assist control  P. 2 76
■ EPS (Electric Power Steering) Employs an electric motor to reduce the amount of effort needed to turn
the steering wheel
■ Active Torque Control 4WD system (AWD models) Automatically switches from front-wheel drive to AWD (All-Wheel Drive)
according to driving conditions, help ing to ensure reliable handling and
stability. Examples of conditions wher e the system will switch to AWD are
when cornering, going uphill, starti ng off or accelerating, and when the
road surface is slippery due to snow or rain etc.

2752-4. Using other driving systems
2
When driving All-wheel drive lock switch (AWD models)
■
All-wheel drive lock mode ●
All-wheel drive lock mode is canceled when the brakes are applied to ensure
the ABS and VSC systems operate effectively.●
All-wheel drive lock mode is canceled when the vehicle speed exceeds 25 mph
(40 km/h).All-wheel drive lock mode can be used when a large amount of drive power
needs to be applied to all the wheels, such as when the vehicle gets stuck in
mud and you need to free it.
Press the switch. The torque of the engine is dis-
tributed to the rear wheels to
the maximum extent possible in
accordance with driving condi-
tions.
Pressing the switch again can-
cels all-wheel drive lock mode
and returns the active torque
control 4WD system to normal
mode. (  P. 2 6 9 )

3232-5. Driving information
2
When driving Dinghy towing NOTICE■
To avoid serious damage to your vehicle
■
To prevent causing serious damage to th e transmission and Active Torque Con-
trol 4WD system (AWD models)Your vehicle is not designed to be dinghy towed (with 4 wheels on the
ground) behind a motor home.
Do not tow your vehicle with four wheels on
the ground.
2WD models: Never tow this vehicle from
the rear with the front wheels on the ground.
This may cause serious damage to the trans-
mission.
AW D m o d e l s : N e v e r t o w this vehicle with
any of the wheels on the ground. This may
cause serious damage to the transmission
and Active Torque Control 4WD system.

7124-3. Do-it-yourself maintenance
7
ECU-IG1 NO. 1 10 A Multiplex communication system,
steering sensor, shift lock control sys-
tem, tilt and telescopic steering, auto-
matic transmission system, power
back door, pre-collision system, vehi-
cle stability control system, tire pres-
sure warning system8
S/ROOF 30 A Moon roof9
FUEL OPN 7. 5 A Fuel filler door opener10
PSB 30 A Pre-collision seat belt11
TI & TE 30 A Tilt and telescopic steering system12
DR LOCK 10 A13
FR FOG 7. 5 A Front fog lights14
P-S E AT L H 30 A Po w e r s e a t ( l e f t - s i d e )15
4WD 7. 5 A AW D s y s t e m16
INVERTER 20 A Po w e r o u t l e t17
RR FOG 7. 5 A18
D/L ALT B 25 A Multiplex communication system,
power door lock system, power back
door19
EPS 10 A Electric power steering system20
ECU-IG1 NO. 2 10 A Intuitive parking assist, AWD system,
pre-collision seat beltFuse Ampere Circuit

5
When trouble arises
7415-1. Essential information
CAUTION■
While towing ●
When towing using a rope, avoid sudden starts, etc. which place excessive stress
on the towing hook and rope.
The towing hook or rope may become damaged, broken debris may hit people
and cause serious damage.●
Do not turn the “ENGINE START STOP” switch off.
There is a possibility that the steering wheel is locked and can not be operated.■
Installing towing eyelet to the vehicle
Make sure that towing eyelet is installed securely.
If not securely installed, towing eyelet may come loose during towing.
NOTICE■
To prevent damage to the vehicle when towing using a wheel-lift type truck
When raising the vehicle, ensure adequa te ground clearance for towing at the
opposite end of the raised vehicle. Without adequate clearance, the vehicle could
be damaged while being towed.■
To prevent body damage when to wing with a sling-type truck
Do not tow with a sling-type truck, either from the front or rear.■
Recreational towing (behind motor home, etc.)
Never dinghy tow your vehicle to prevent
causing serious damage to the Active Torque
Control 4WD system (AWD models) and
transmission. (  P. 323)

868Abbreviation list
Abbreviation/Acronym list ABBREVIATIONS MEANING
2WD 2 Wheel Drive
4WD 4 Wheel Drive
A/C Air Conditioning
ABS Anti-lock Brake System
AI-SHIFT Artificial Intelligence Shift control
ALR Automatic Locking Retractor
AW D All Wheel Drive
BSM Blind Spot Monitor
CRS Child Restraint System
DISP Display
ECO Economy/Ecology
ECT Electronic Controlled Transmission
ECU Electronic Control Unit
EDR Event Data Recorder
ELR Emergency Locking Retractor
EPS Electric Power Steering
GAWR Gross Axle Weight Ratings
GCWR Gross Combination Weight Rating
GVWR Gross Vehicle Weight Rating
I/M Emission Inspection and Maintenance
LATCH Lower Anchors and Tethers for Children
LED Light Emitting Diode
MMT Methylcyclopentadienyl Manganese Tricarbonyl
M + S Mud and Snow
MTBE Methyl Tertiary Butyl Ether