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5
When trouble arises
533
5-2. Steps to take in an emergency
IS250C/350C_U
■Avoiding a discharged battery
●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, etc.
■Charging the battery
The electricity stored in the battery will discharge gradually even when the vehi-
cle is not in use, due to natural discharge and the draining effects of certain
electrical appliances. If the vehicle is left for a long time, the battery may dis-
charge, and the engine may be unable to start. (The battery recharges automat-
ically during driving.)
■When the battery is removed or discharged
Make sure that the key is not inside the vehicle when recharging or replacing the
battery. The key may be locked in the vehicle if the alarm is activated. (→P. 1 0 1 )
Maintain the engine speed of the second vehicle and turn the
“ENGINE START STOP” switch to IGNITION ON mode,
then start the vehicle’s engine.
Once the vehicle’s engine has started, remove the jumper
cables in the exact reverse order in which they were con-
nected.
Once the engine starts, have the vehicle checked at your Lexus dealer
as soon as possible.STEP5
STEP6
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540
5-2. Steps to take in an emergency
IS250C/350C_U
If the retractable hardtop does not close
Unlock the trunk. (→P. 5 1 )
Open the trunk fully.
If the retractable hardtop does not clos e when the switch is pressed, check
that all operating conditions are met. ( →P. 9 1 )
If the retractable hardtop will not close even though all operating condi-
tions have been met, there may be a malfunction. Immediately have the
vehicle inspected by your Lexus dealer.
As a temporary measure, the following procedure can be performed to
manually close the retractable hardtop.
■ Notes for manually closin g the retractable hardtop
● This procedure requires 2 people.
● There is some risk of damage to the vehicle during the procedure,
such as when applying considerable force or removing and
installing various parts. If you are unsure of how to perform this
procedure properly, it is recommended that you contact your
Lexus dealer.
● Protect your hands with gloves etc. when placing them in narrow
spaces.
● Before starting the procedure, turn the “ENGINE START STOP”
switch off.
STEP1
STEP2
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When trouble arises
545
5-2. Steps to take in an emergency
IS250C/350C_UUsing an open-end wrench, turn
the six-sided part of the silver rod
as far as possible.
The plate brackets will rise up.
Using a hexagon wrench, remove
the 2 bolts and lock on the left and
right sides of the vehicle.
The lock on the left side of the vehi-
cle can be removed. However, the
lock on the right side of the vehicle
cannot be removed completely as
it is attached to a wire harness.
Holding the parts in the same
places as those shown in the illus-
tration, carefully raise the roof
panel and move it toward the front
of the vehicle.
Performing this procedure by hold-
ing parts other than those indi-
cated may result in damage to the
vehicle or serious injury.
Let go of the roof panel once it
begins to lower on its own.
The roof panel will not lower com-
pletely.
STEP 14
STEP 15
STEP 16
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546
5-2. Steps to take in an emergency
IS250C/350C_URemove the forward lock cover
located on the ceiling.
Insert the end of the hexagon
wrench and turn it counterclock-
wise as far as possible to release
the forward lock.
The roof panel will be fully lowered.
Be careful not to catch your hands
or fingers between the roof panel
and vehicle body when releasing
the lock.
Turn the hexagon wrench clock-
wise as far as possible to lock the
roof panel.
Do not forcibly turn the wrench
beyond the stopping point.
STEP 17
STEP 18
STEP 19
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When trouble arises
547
5-2. Steps to take in an emergency
IS250C/350C_UHolding the parts in the same
places as those shown in the illus-
trations, carefully raise the rear
window panel until it comes into
contact with the roof panel.
Performing this procedure by hold-
ing parts other than those indi-
cated may result in damage to the
vehicle or serious injury.
If the rear window panel cannot be
raised, move it lightly up and down
2 or 3 times.
Be careful not to catch your hand
or fingers between the roof panel
and rear window panel.
Remove the rearward lock cover
located on the ceiling.
Insert the end of the hexagon
wrench and turn it clockwise as far
as possible to lock the rear window
panel and the roof panel.
Do not forcibly turn the wrench
beyond the stopping point.
STEP 20
STEP21
STEP22
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548
5-2. Steps to take in an emergency
IS250C/350C_UHolding the parts in the same
places as those shown in the illus-
trations, push the trunk lid down
toward the front of the vehicle until
it locks.
Performing this procedure by hold-
ing parts other than those indi-
cated may result in damage to the
vehicle or serious injury.
Close the trunk lid.
STEP23
STEP24
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6-1. Specifications
IS250C/350C_U■
Engine number
The engine number is stamped on the engine block as shown.
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6-1. Specifications
6
Vehicle specifications
IS250C/350C_U
Differential
*: Your Lexus vehicle is filled with “Toyota Genuine Differential Gear Oil” at thefactory. Use Lexus approved “Toyota Genuine Differential Gear Oil” or an
equivalent oil of matching quality that satisfies the above specifications. Please
contact your Lexus dealer for further details.
Automatic tr ansmission
*: The fluid capacity is provided as a reference. If replacement is necessary, con-
tact your Lexus dealer.
Oil capacity
IS350C
1.42 qt. (1.35 L, 1.19 Imp. qt.)
IS250C
1.20 qt. (1.15 L, 1.01 Imp. qt.)
Oil type and viscosity*Toyota Genuine Differential Gear Oil LT 75W-85
GL-5 or equivalent
Fluid capacity*
IS350C
8.3 qt. (7.9 L, 7.0 Imp. qt.) IS250C
7.9 qt. (7.5 L, 6.6 Imp. qt.)
Fluid typeTo y o t a G e n u i n e AT F W S
NOTICE
Using automatic transmission fluid other than “Toyota Genuine ATF WS” may cause
deterioration in shift quality, locking up of your transmission accompanied by vibra-
tion, and ultimately damage the automatic transmission of your vehicle.