2009 Lexus GS450h battery

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4-3. Do-it-yourself maintenance
4
Maintenance and care
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
CAUTION
■Chemicals in the 12 volt battery
A 12 volt battery contains poisonous and corrosive sulfuric acid and may produce
hydrogen gas which is flammable and explosive. To reduce the risk of death or seri-
ous injury, take the following precautions while working on or near 12 volt battery:
●Do not cause sparks by touching the 12 volt battery terminals with tools.
●Do not smoke or light a match near the 12 volt battery.
●Avoid contact with eyes, skin and clothes.
●Never inhale or swallow electrolyte.
●Wear protective safety glasses when working near the 12 volt battery.
●Keep children away from the 12 volt battery.
■Where to safely charge the 12 volt battery
Always charge the 12 volt battery in an open area. Do not charge the 12 volt battery
in a garage or closed room where there is not sufficient ventilation.
■How to recharge the 12 volt battery
Only perform a slow charge (5A or less). The 12 volt battery may explode if
charged at a quicker rate.
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April 27, 2009 10:09 am
CAUTION
■Emergency measures regarding electrolyte
●If 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.
●If electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or a burning sensation, seek
medical attention immediately.
●If 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.
●If 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.
NOTICE
■When recharging the 12 volt battery
Never recharge the 12 volt battery while the hybrid system is on. Also, be sure all
accessories are turned off.
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4-3. Do-it-yourself maintenance
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
Electronic key battery
Replace the battery with a new one if it is discharged.
■You will need th e following items:
● Flathead screwdriver
● Small Phillips-head screwdriver
● Lithium battery (CR1632)
■ Replacing 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
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4-3. Do-it-yourself maintenance
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Maintenance and care
GS_HV_U (OM30B44U)
April 27, 2009 10:09 am
■If the electronic key battery is discharged
The following symptoms may occur.
●The smart access system with push-button start and wireless remote control will
not function properly.
●The operational range is reduced.
■Use a CR1632 lithium battery
●Batteries can be purchased at your Lexus dealer, jewelers, or camera stores.
●Replace only with the same or equivalent type recommended by your Lexus
dealer.
●Dispose of used batteries according to the local laws.
■When the card key battery needs to be replaced
The battery for the card key is available only at Lexus dealers. Your Lexus dealer
can replace the battery for you.
CAUTION
■Removed battery and other parts
Keep away from children.
These parts are small and if swallowed by a child they can cause choking.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents.
●Always work with dry hands.
Moisture may cause the battery to rust.
●Do not touch or move any other components inside the electronic key.
●Do not bend the battery terminals.
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Maintenance and care
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FuseAmpereCircuit
8IG210
Multiport fuel injection system/
sequential multiport fuel injection
system, noise filter
9EFI No.210Fuel system, exhaust system
10H-LP R LWR15Headlight low beam (right)
11H-LP L LWR15Headlight low beam (left)
12D/C CUT30DOME, MPX-B
13IGCT No.37. 5Hybrid battery (traction battery)
14IGCT No.27. 5Hybrid system
15MPX-B7. 5
Power windows, door control system,
power seat, electronically controlled
brake system, combination switch, tilt
and telescopic steering, gauges and
meters
16DOME7. 5Interior lights, foot lights, vanity light,
gauges and meters
17ABS MAIN110Electronically controlled brake sys-
tem
18ABS MOTOR30ABS
19ABS MAIN210Electronically controlled brake sys-
tem
20F/ P M P25Fuel system
21EFI25
EFI2, multiport fuel injection system/
sequential multiport fuel injection
system
22INJ20
Multiport fuel injection system/
sequential multiport fuel injection
system
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When trouble arises5
499
GS_HV_U (OM30B44U)
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5-1. Essential informationEmergency flashers.............. 500
If your vehicle needs to be towed ............................. 501
If you think something is wrong ...................................... 507
Event data recorder ............. 508 5-2. Steps to take in an
emergency
If a warning light turns on or a warning buzzer
sounds...................................... 510
If a warning message is displayed................................. 519
If you have a flat tire (Vehicles with standard tires) ............ 536
If you have a flat tire (Vehicles with run-flat tires) ............... 546
If the hybrid system will not start........................... 547
If the shift lever cannot be shifted
from “P”.................................. 548
If you lose your keys .............. 549
If the electronic key does not operate properly ................. 550
If the 12 volt battery is discharged ............................ 553
If your vehicle overheats ..... 557
If the vehicle becomes stuck........................................ 560
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5-1. Essential information
Emergency flashers
NOTICE
■To prevent 12 volt battery discharge
Do not leave the emergency flashers on longer than necessary when the hybrid sys-
tem is off.
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.
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5-2. Steps to take in an emergency
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Wa r n i n g m e s s a g eDetailsCorrection procedure
(If equipped, flashing)
Your vehicle is nearing
the vehicle ahead (in
radar cruise mode).Slow the vehicle by apply-
ing the brakes.
The hybrid system has
overheated.Stop and check.
(→ P. 5 5 7 )
The vehicle is unable to
drive over 60 mph until
the transmission warms
up.
Wait until the transmission
warms up.
(Flashing)
The hybrid battery (trac-
tion battery) is low.Stop the vehicle and shift
the shift lever to “P”.
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