2008 Lexus GX470 battery

351
4-3. Do-it-yourself maintenance
4
Maintenance and care
Wireless remote control battery
Replace the battery with a new one if it is discharged.
■You will need th e following items:
● Small Phillips-head screwdriver
● Lithium battery (CR1616)
■ Replacing the battery
Remove the screw and cover.
Push the cover in the arrow
direction.
Remove the module.
Remove the 2 screws to take
out the lid.
Insert a new battery with the “+”
terminal facing up.
STEP1
STEP2
STEP3

352
4-3. Do-it-yourself maintenance
■If the battery is discharged
The following symptoms may occur.
●The wireless remote control will not function properly.
●The operational range is reduced.
■Use a CR1616 lithium battery
●Batteries can be purchased at your Lexus dealer, jewelers, or camera stores.
●Replace only with the same or equivalent type recommended by a Lexus dealer.
●Dispose of used batteries according to the local laws.
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.

353
4-3. Do-it-yourself maintenance
4
Maintenance and care
Rear seat entertainment system controller
■If the batteries are discharged
The following symptoms may occur.
●The rear seat entertainment system control will not function properly.
●The operational range is reduced.
■Use 3 AA batteries
●Batteries can be purchased at your Lexus dealer, jewelers, or camera stores.
●Replace only with the same or equivalent type recommended by a Lexus dealer.
●Dispose of used batteries according to the local laws.
Replace the batteries if they are discharged.
■Necessary items
3 AA batteries
■ Replacing the battery
Remove the cover.
Remove the depleted batteries
and install the new batteries.
STEP1
STEP2

354
4-3. Do-it-yourself maintenance
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 remote control.
●Do not bend the battery terminals.

When trouble arises5
371
5-1. Essential information .... 372If your vehicle needs to be towed ...................................... 372
If you think something is wrong ....................................... 377
Fuel pump shut off system ... 378
Event data recorder.............. 379
5-2. Steps to take in an emergency .................... 381
If a warning light turns on or a warning buzzer sounds... ... 381
If you have a flat tire................ 391
If the engine will not start .... 402
If the shift lever cannot be shifted from P ....................... 403
If you lose your keys .............. 404
If the vehicle battery is discharged ............................ 405
If your vehicle overheats ..... 408
If the vehicle becomes stuck......................................... 410

402
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. 118), consider each of the following points.
■The engine will not start even when the starter motor operates
normally
One of the following may be the cause of the problem.
●There may not be sufficient fuel in the vehicle’s tank.
Add fuel to the vehicle.
● The engine may be flooded.
Try to restart the engine once more following correct starting
procedures. ( →P. 1 1 8 )
● There may be a malfunction in the engine immobilizer system.
(→ P. 7 0 )
■ The starter motor turns over slowly, interior lights and headlights
are dim, or the horn does not sound or sounds at a low volume
One of the following may be the cause of the problem.
● The battery may be discharged. ( →P. 405)
● The battery terminal connections may be loose or corroded.
■ The starter motor does not turn ov er, interior lights and headlights
do not turn on, or the horn does not sound
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. 405)
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.

5
When trouble arises
405
5-2. Steps to take in an emergency
If the vehicle battery is discharged
The following procedures may be used to start the engine if the vehicle’s
battery is discharged.
You can call your Lexus dealer, or qualified repair shop.
If you have a set of jumper (or booster) cables and a second vehicle
with a 12 volt battery, you can jump start your Lexus by following the
steps below.
Open the hood.
Connecting the jumper cables. If required, remove all vent plugs from the booster battery. Lay a
cloth over the open vents on the booster battery. (This helps reduce
the chance of explosion, personal injuries and burns.)
Positive (+) battery terminal on your vehicle.
Positive (+) battery terminal on the second vehicle.
Negative (-) battery terminal on the second vehicle.
Negative (-) battery terminal on your vehicle. Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately 5
minutes to recharge the 12 volt battery of your vehicle.
Maintain the engine speed of the second vehicle and start your
vehicle’s engine.
STEP1
STEP2
STEP3
STEP4

406
5-2. Steps to take in an emergency
■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, etc.
■When the battery is removed or discharged
The power windows and moon roof must be initialized.
CAUTION
■Avoiding battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable
gas that may be emitted from the battery.
●Make sure the jumper cable is connected to the correct terminal and that it is not
unintentionally in contact with any part other than the intended terminal.
●Do not allow the jumper cables to come into contact with the “+” and “-” termi-
nals.
●Do not allow open flame or use matches, cigarette lighters or smoke near the
battery.
Once your 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