2016 LEXUS IS250 battery

323
4-3. Do-it-yourself maintenance
4

Maintenance and care
CAUTION
nChemicals in the battery
A battery contains poisonous and corrosive sulfuric acid and may produce hydro-
gen gas which is flammable and explosive. To reduce the risk of death or serious
injury, take the following precautions while working on or near battery:
lDo not cause sparks by touching the battery terminals with tools.
lDo not smoke or light a match near the battery.
lAvoid contact with eyes, skin and clothes.
lNever inhale or swallow electrolyte.
lWear protective safety glasses when working near the battery.
lKeep children away from the battery.
nWhere to safety charge the battery
Always charge the battery in an open area. Do not charge the battery in a garage or
closed room where there is not sufficient ventilation.
nHow to recharge the battery
Only perform a slow charge (5 A or less). The battery may explode if charged at a
quicker rate.
nEmergency measures regarding electrolyte
lIf electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immediate medi-
cal attention. If possible, continue to apply water with a sponge or cloth while
traveling to the nearest medical facility.
lIf electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or burning, get medical atten-
tion immediately.
lIf electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the clothing and
follow the procedure above if necessary.
lIf you accidentally swallow electrolyte
Drink a large quantity of water or milk. Follow with milk of magnesia, beaten raw
egg or vegetable oil. Get emergency medical attention immediately.

324
4-3. Do-it-yourself maintenance
Washer fluid
If any washer does not work or the
warning message appears on the
multi-information display, the
washer tank may be empty. Add
washer fluid.
NOTICE
nWhen recharging the battery
Never recharge the battery while the engine is running. Also, be sure all accesso-
ries are turned off.
CAUTION
nWhen refilling the washer fluid
Do not refill the washer fluid when the engine is hot or running, as the washer fluid
contains alcohol and may catch fire if spilled on the engine etc.
NOTICE
nDo not use any fluid other than washer fluid
Do not use soapy water or engine antifreeze instead of washer fluid.
Doing so may cause streaking on the vehicle’s painted surfaces.
nDiluting washer fluid
Dilute washer fluid with water as necessary.
Refer to the freezing temperatures listed on the washer fluid tank.

345
4-3. Do-it-yourself maintenance
4

Maintenance and care
Electronic key battery
Replace the battery with a new one if it is discharged.
nYou will need the following items:
lFlathead screwdriver
lSmall Phillips-head screwdriver
lLithium battery (CR1632)
nReplacing the battery
Take out the mechanical key.
Remove the cover.
Remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
STEP1
STEP2
STEP3

346
4-3. Do-it-yourself maintenance
nIf the electronic key battery is discharged
The following symptoms may occur.
lThe smart access system with push-button start and wireless remote control will
not function properly.
lThe operational range is reduced.
nUse a CR1632 lithium battery
lBatteries can be purchased at your Lexus dealer, jewelers, or camera stores.
lReplace only with the same or equivalent type recommended by a Lexus dealer.
lDispose of used batteries according to the local laws.
nWhen the card key battery needs to be replaced (if equipped)
The battery for the card key is available only at Lexus dealers. Your Lexus dealer
can replace the battery for you.
CAUTION
nRemoved battery and other parts
Keep away from children.
These parts are small and if swallowed by a child they can cause choking.
NOTICE
nFor normal operation after replacing the battery
Observe the following precautions to prevent accidents.
lAlways work with dry hands.
Moisture may cause the battery to rust.
lDo not touch or move any other components inside the remote control.
lDo not bend either of the battery terminals.

372
5-1. Essential information
Emergency flashers
NOTICE
nTo prevent battery discharge
Do not leave the emergency flashers on longer than necessary when the engine is
not running.
Use the emergency flashers if the vehicle malfunctions or is involved in an
accident.
Press the switch to flash all the
turn signal lights. To turn them
off, press the switch once again.

5

When trouble arises
387
5-2. Steps to take in an emergency
nIf the malfunction indicator lamp comes on while driving
First check the following:
lIs the fuel empty?
If it is, fill the fuel tank immediately.
lIs the fuel tank cap loose?
If it is, tighten it securely.
The lamp will go off after taking several driving trips.
If the lamp does not go off even after several trips, contact your Lexus dealer as
soon as possible.
nElectric power steering warning light
When the battery is low or when the voltage drops temporarily, the electric power
steering warning light may come on.
nFront passenger detection sensor and passenger seat belt reminder and warning
buzzer
lIf luggage is placed on the front passenger seat, the front passenger detection
sensor may cause the warning light to flash and the warning buzzer to sound,
even if a passenger is not sitting in the seat.
lIf a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.
nWhen the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pressing the
satellite switch does not turn off the tire pressure warning light.
nThe tire pressure warning light may turn on due to natural causes
The tire pressure warning light may turn on due to natural causes such as natural air
leaks or tire inflation pressure changes caused by temperature. In this case, adjust-
ing the tire inflation pressure will turn off the warning light (after a few minutes).
nWhen a tires is replaced with a spare tire
The compact spare tire is not equipped with the tire pressure warning valve and
transmitter. If a tire goes flat, the tire pressure warning light will not turn off even
though the flat tire is replaced with the spare tire. Replace the spare tire with the
repaired tire and adjust the proper tire inflation pressure. The tire pressure warning
light will turn off after a few minutes.

5

When trouble arises
403
5-2. Steps to take in an emergency
*: If the engine does not start when the electronic key is inside the vehicle, the
electronic key battery may be depleted or there may be difficulties receiving the
signal from the key. (→P. 2 8 )
Interior
buzzer Exterior
buzzer
Wa r n i n g m e s s a g eDetailsCorrection
procedure
Once⎯
(Vehicles with an auto-
matic transmission)
Indicates that the
electronic key
does not operate
properly.
→P. 4 1 8
⎯⎯
(Vehicles with an auto-
matic transmission)
Once⎯
(Vehicles with a manual
transmission)
Indicates that the
electronic key
does not operate
properly.
→P. 4 1 8
⎯⎯
(Vehicles with a manual
transmission)

5

When trouble arises
413
5-2. Steps to take in an emergency
If the engine will not start
If the engine will not start, even though correct starting procedures are
being followed (→P. 126), consider each of the following points.
nThe engine will not start even when the starter motor operates
normally.
One of the following may be the cause of the problem.
lThere may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
lThe engine may be flooded.
Try to restart the engine once more following correct starting
procedures. (→P. 1 2 6 )
lThere may be a malfunction in the engine immobilizer system.
(→P. 7 7 )
nThe starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume.
One of the following may be the cause of the problem.
lThe battery may be discharged. (→P. 4 2 1 )
lThe battery terminal connections may be loose or corroded.
nThe starter motor does not turn over, the interior lights and head-
lights do not turn on, or the horn does not sound.
One of the following may be the cause of the problem.
lOne or both of the battery terminals may be disconnected.
lThe battery may be discharged. (→P. 4 2 1 )
lThere 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.