2014 Lexus IS250 headlights

4437-3. Do-it-yourself maintenance
7
Maintenance and care
IS350/250_U (OM53758U)
CAUTION
■Replacing light bulbs
●Turn off the lights. Do not attempt to replace the bulb immediately after turning off the
lights.
The bulbs become very hot and may cause burns.
●Do not touch the glass portion of the light bulb with bare hands. When it is unavoid-
able to hold the glass portion, use and hold with a clean dry cloth to avoid getting
moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or crack.
●Fully install light bulbs and any parts used to secure them. Failure to do so may result
in heat damage, fire, or water entering the headlight unit. This may damage the head-
lights or cause condensation to build up on the lens.
■Discharge headlights (if equipped)
●Contact your Lexus dealer before replacing the discharge headlights (including light
bulbs).
●Do not touch the discharge headlight’s high voltage socket when the headlights are
turned on.
An extremely high voltage of 30000 V will be discharged and could result in death
or serious injury by electric shock.
●Do not attempt to take apart or repair the headlight bulbs, connectors, power supply
circuits, or related components.
Doing so could result in electric shock and death or serious injury.
■To prevent damage or fire
●Make sure bulbs are fully seated and locked.
●Check the wattage of the bulb before installin g to prevent heat damage.
●Vehicles with discharge headlights:
While the headlights are turned on, and for a
short time after they have been turned off,
metal components at the rear of the headlight
assembly will be extremely hot. To prevent
burns, do not touch these metal components
until you are certain they have cooled down.
Metal components

4698-2. Steps to take in an emergency
8
When trouble arises
IS350/250_U (OM53758U)
*: Refer to the separate “Scheduled Maintenance” or “Owner’s Manual Supplement”
for the maintenance interval applicable to your vehicle.
(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 maintenance data has been reset.
(The indicator will not work properly unless the mainte-
nance data has been reset.)
 Perform the necessary maintenance. Please reset
the maintenance data afte r the maintenance is per-
formed ( P. 3 9 1 )
(If equipped)
Indicates that the Automatic High Beam switch is
pressed while the headlights are in low beam.
 Turn the high beam on and press the Automatic
High Beam switch again.
(If equipped)
Indicates that, since the VSC (Vehicle Stability Control)
system was turned off, the pre-collision brake system
operation is stopped
 Turn the VSC on. ( P. 2 3 6 )
(If equipped)
Indicates that the PCS (Pre-Collision System) is not cur-
rently functional because the grille cover or the sensor is
dirty
 Check the grille cover and the sensor and clean
them if they are dirty.
Indicates that operation of large electricity consuming
systems such as the air conditioning system are sus-
pended
Stop using unnecessary electric components to
reduce electricity consumption. Wait a while until
the electric power supply is restored.
(If equipped)
Indicates that the LDA (Lane Departure Alert) system
cannot be used because the vehicle speed is lower than
approximately 32 mph (50 km/h)
Drive the vehicle at 32 mph (50 km/h) or higher.
Wa r n i n g m e s s a g eDetails/Actions
(Flashes)

4858-2. Steps to take in an emergency
8
When trouble arises
IS350/250_U (OM53758U)
One of the following may be the cause of the problem:
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●The engine may be flooded.
Try to restart the engine again following correct starting procedures.
(P. 1 5 9 )
●There may be a malfunction in the engine immobilizer system. ( P. 6 9 )
One of the following may be the cause of the problem:
●The battery terminal connections may be loose or corroded.
●The battery may be discharged. ( P. 4 9 0 )
The engine starting system may be malfun ctioning due to an electrical problem
such as electronic key battery depletion or a blown fuse. However, an interim
measure is available to start the engine. ( P. 4 8 6 )
If the engine will not start
If the engine will not start even though correct starting procedures are being
followed ( P. 159), consider each of the following points:
The engine will not start even thoug h the starter motor operates nor-
mally.
The starter motor turns over slowly , the interior lights and headlights
are dim, or the horn does not sound or sounds at a low volume.
The starter motor does not turn over

4868-2. Steps to take in an emergency
IS350/250_U (OM53758U)
One of the following may be the cause of the problem:
●One or both of the battery terminals may be disconnected.
●The battery may be discharged. (P. 4 9 0 )
●There may be a malfunction in the steering lock system.
Contact your Lexus dealer if the problem cannot be repaired, or if repair procedures
are unknown.
When the engine does not start, the following steps can be used as an interim
measure to start the engine if the engine switch is functioning normally:
Set the parking brake.
Shift the shift lever to P.
Turn the engine switch to ACCESSORY mode.
Press and hold the engine switch for about 15 seconds while depressing the
brake pedal firmly.
Even if the engine can be started using the above steps, the system may be mal-
functioning. Have the vehicle inspected by your Lexus dealer.
The starter motor does not turn over, the interior lights and headlights
do not turn on, or the horn does not sound.
Emergency start function
1
2
3
4

4928-2. Steps to take in an emergency
IS350/250_U (OM53758U)
■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 discharge 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 recharging or replacing the battery
●Make sure that the key is not inside the vehicle when recharging or replacing the bat-
tery. The key may be locked in the vehicle if the alarm is activated. ( P. 7 2 )
●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.

5099-1. Specifications
9
Vehicle specifications
IS350/250_U (OM53758U)
Light bulbs*1
Light bulbsBulb No.WTy p e
Exterior
Discharge headlights*235A
Fog lights*219B
Front turn signal lights7444NA28 /8C
Rear turn signal lights21C
Back-up lights92116D
Outer foot lights5D
Interior
Door courtesy lights1685D
Vanity lights8D
Interior light8D
Pe r s o n a l l i g h t s8D
Footwell lights1943.8D
Trunk light5D
A: D4S discharge bulbsB: H16 halogen bulbs
C: Wedge base bulbs (amber) D: Wedge base bulbs (clear)
*1: Light bulbs not listed in this table are LED bulbs.
*2: If equipped

559Alphabetical index
IS350/250_U (OM53758U)
Front turn signal lights ..........................170Replacing light bulbs ........... 436, 438
Turn signal lever .................................. 170
Wattage ................................................. 509
Fuel .............................................................. 188 Capacity ................................................ 502
Fuel gauge ................................................. 81
Fuel pump shut off system.............454
Information ............................................. 510
Refueling..................................................188
Type .............................................. 188, 502
Warning light ...................................... 456
Fuel consumption Average fuel economy ...................... 87
Current fuel consumption ................ 87
Fuel filler door ......................................... 188 If the fuel filler door cannot be opened .......................... 190
Refueling..................................................188
Fuel gauge ....................................................81
Fuel pump shut off system................. 454
Fuses .......................................................... 429
Garage door opener .......................... 370
Gauges ..........................................................81
Gear positions ........................................ 168
Glove box ................................................ 359
Glove box light ...................................... 359 Hands-free system
(for cellular phone).............................. 311
HD Radio
® system ................................ 281
Head restraints........................................ 127
Headlights ................................................. 173 Discharge headlights precautions ....................................... 443
Light switch............................................. 173
Replacing light bulbs ....................... 442
Wattage ................................................ 509
Headlights cleaner ................................ 182
Heaters Air conditioning system ................. 346
Heated steering wheel ................... 354
Outside rear view mirrors ............350
Seat heaters ..........................................355
Hill-start assist control ........................234
Hood ......................................................... 399 Open ....................................................... 399
Hooks Cargo hooks ....................................... 362
Coat hooks ........................................... 369
Retaining hooks (floor mat)............. 26
Horn.............................................................. 131
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