2015 Lexus IS250 Trunk

4077-2. Maintenance
7
Maintenance and care
IS350/250_U (OM53C50U)
Vehicle exterior
ItemsCheck points
Doors/trunk• Do the doors/trunk operate smoothly?
Engine hood• Does the engine hood lock system work properly?
Fluid leaks• There should not be any signs of fluid leakage afterthe vehicle has been parked.
Ti r e s
• Is the tire inflation pressure correct?
• The tires should not be damaged or excessively
worn.
• Have the tires been rotated according to the mainte- nance schedule?
• The wheel nuts should not be loose.
Windshield wipers
• The wiper blades should not show any signs of crack- ing, splitting, wear, contamination or deformation.
• The wiper blades should clear the windshield without
streaking or skipping.
CAUTION
■If the engine is running
Turn the engine off and ensure that there is adequate ventilation before performing
maintenance checks.

4497-3. Do-it-yourself maintenance
7
Maintenance and care
IS350/250_U (OM53C50U)
■Rear turn signal lightsOpen the trunk, and remove the
2 covers and 2 screws.
When removing the cover, wrap the
tip of the screwdriver with tape to
protect the vehicle from damage.
Push and pull the light unit toward
the rear of the vehicle as shown in
the illustration to remove it.
Apply protective tape to the periph-
eral of the light un it installation sur-
face on the vehicle body, such as the
rear bumper, to protect the vehicle
from damage.
Pushing on the portion A in the illus-
tration toward the rear of the vehicle
will make disengagement of the tabs
easier.
Turn the bulb base counterclock-
wise.
Remove the light bulb.
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4517-3. Do-it-yourself maintenance
7
Maintenance and care
IS350/250_U (OM53C50U)
■Back-up lightOpen the trunk, remove the 3
clips on the side which the bulb is
to be replaced and pull back the
trunk lid cover.
Turn the bulb base counterclock-
wise.
Remove the light bulb.
Pull out the connector carefully,
ensuring that excessive pulling load is
not applied to the wire harness.
Install a new light bulb then install
the bulb base to the light unit by
inserting it and turning the bulb
base clockwise.
After installing the light bulb, turn on
the back-up light to visually check
that there is no light leaking from the
bulb base.
Reinstall the trunk lid cover with the 3 clips.
To install the clips, simply push them in.
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4678-2. Steps to take in an emergency
8
When trouble arises
IS350/250_U (OM53C50U)
Electric power steering system warning lightIndicates a malfunction in the EPS (Electric Power Steering) sys-
tem
→ Have the vehicle inspected by your Lexus dealer immediately.
(Flashes)
(If equipped)
Pre-collision system warning light Indicates a malfunction in the PCS (Pre-Collision System)
The warning light will operate as follows, even when the system is
not malfunctioning:
• The light will flash quickly when the system is operating.
(→ P. 2 4 6 )
• The light will turn on when the pre-collision system is disabled. (→ P. 2 4 7 )
• The light will turn on when the VSC (Vehicle Stability Control) system is disabled. ( →P. 2 4 2 )
• The light will flash when the system cannot temporarily be used.
(→ P. 4 8 0 )
→ Have the vehicle inspected by your Lexus dealer immediately.
Slip indicator
Indicates a malfunction in:
• The VSC (Vehicle Stability Control) system;
• The TRAC (Traction Control) system; or
• The hill-start assist control system
The light will flash when the VSC or the TRAC system is operating.
→ Have the vehicle inspected by your Lexus dealer immediately.
Automatic headlight leveling system warning light
Indicates a malfunction in the au tomatic headlight leveling system
→ Have the vehicle inspected by your Lexus dealer immediately.
Open door warning light (warning buzzer)*2
Indicates that a door or the trunk is not fully closed
→ Check that all the doors and the trunk are closed.
Low fuel level warning light
Indicates that remaining fuel is approximately 2.6 gal. (10 L, 2.2
Imp. gal.) or less
→ Refuel the vehicle.
Seat belt reminder light (warning buzzer)*3
Warns the driver and/or front passenger to fasten their seat belts
→ Fasten the seat belt.
If the front passenger’s seat is occupied, the front passenger’s
seat belt also needs to be fastened to make the warning light
(warning buzzer) turn off.
Master warning light
A buzzer sounds and the warning light comes on and flashes to
indicate that the master warning system has detected a malfunc-
tion.
→ P. 4 7 2
Warning lightWarning light/Details/Actions

4748-2. Steps to take in an emergency
IS350/250_U (OM53C50U)
Indicates that one or more of the doors is not fully closedThe system also indicates which doors are not fully
closed.
If the vehicle reaches a speed of 3 mph (5 km/h),
flashes and a buzzer sounds to indicate
that the door(s) are not yet fully closed.
→ Make sure that all the doors are closed.
Indicates that the hood is not fully closed
If the vehicle reaches a speed of 3 mph (5 km/h),
flashes and a buzzer sounds to indicate
that the hood is not yet fully closed.
→ Close the hood.
Indicates that the trunk is not fully closed
If the vehicle reaches a speed of 3 mph (5 km/h),
flashes and a buzzer sounds to indicate
that the trunk is not yet fully closed.
→ Close the trunk.
(If equipped)
Indicates a malfunction in the intuitive parking assist-sen-
sor The assist-sensors flash.
A buzzer also sounds.
→ Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates that an intuitive park ing assist sensor is dirty or
covered with ice
A buzzer also sounds.
→ Clean the sensor.
Indicates a malfunction in the EPS (Electric Power Steer-
ing) system
A buzzer also sounds.
→ Have the vehicle inspected by your Lexus dealer.
Wa r n i n g m e s s a g eDetails/Actions

4908-2. Steps to take in an emergency
IS350/250_U (OM53C50U)
Remove the luggage mat.
Remove the spacer and tool tray.
Loosen the center fastener that
secures the spare tire.
If the center fastener cannot be turned
by hand, use the wheel nut wrench that
is stored in the trunk. (To secure the tire,
tighten the center fastener by hand. Do
not use the wrench or other tools.)
Taking out the spare tire
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CAUTION
■When storing the spare tire
Be careful not to catch fingers or other body parts between the spare tire and the body
of the vehicle.

4998-2. Steps to take in an emergency
8
When trouble arises
IS350/250_U (OM53C50U)
■Doors
Use the mechanical key (→P. 99) in
order to perform the following oper-
ations:
Locks all the doors
Closes the windows and moon
roof (turn and hold)
*
Unlocks the door
Turning the key rearward unlocks the
driver’s door. Turning the key once
again within 5 seconds unlocks the
other doors.
Opens the windows and moon roof (turn and hold)*
*
: This setting must be customized at your Lexus dealer.
■Tr u n k
Turn the mechanical key clockwise
to open.
If the electronic key does not operate properly
If communication between the electronic key and vehicle is interrupted ( →P.
116) or the electronic key cannot be us ed because the battery is depleted, the
smart access system with push-button start and wireless remote control can-
not be used. In such cases, the doors and trunk can be opened and the engine
can be started by following the procedure below.
Locking and unlocking the doors, unlocking the trunk and key linked
functions
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5219-1. Specifications
9
Vehicle specifications
IS350/250_U (OM53C50U)
Light bulbs*1
Light bulbsBulb No.WTy p e
Exterior
Discharge headlights*235A
Front turn signal lights7444NA28 /8B
Rear turn signal lights21B
Back-up lights92116C
Outer foot lights5C
Interior
Door courtesy lights1685C
Vanity lights8C
Interior light8C
Personal lights8C
Footwell lights1943.8C
Trunk light5C
A: D4S discharge bulbsB: Wedge base bulbs (amber)
C: Wedge base bulbs (clear)
*1: Light bulbs not listed in this table are LED bulbs.
*2: If equipped