Page 510 of 608

5108-2. Steps to take in an emergency
ES300h_OM_OM33D45U_(U)
*: A buzzer sounds the first time a message is shown on the multi-information display.
■If “Hybrid System Overheated Reduced Output Power” is shown
This message may be displayed when driving under severe operating conditions.
(For example, when driving up a long steep hill.)
Handling method: →P. 531
■If “Maintenance Required for Hybrid Batter y Cooling Parts at Your Dealer” is shown
The filter may be clogged, the air intake vent may be blocked or there may be a gap in
duct. Have maintenance performed on the hy brid battery (traction battery) cooling
component at your Lexus dealer.
■If “Hybrid Battery Low Shift Out of N to Recharge” is shown
Message is displayed when the remaining char ge for the hybrid battery (traction battery)
is low.
As the hybrid battery (tractio n battery) can not be charged when the shift lever is in N,
when stopped for long periods of time shift the shift lever to P.
■If “Hybrid Battery Low Hybrid System St opped Shift to P and Restart” is shown
Message is displayed when the remaining char ge for the hybrid battery (traction battery)
is low, because vehicle has been sh ifted N for a long period of time.
When operating the vehicle, restart the hybrid system.
■If “Shift to P Before Ex iting Vehicle” is shown
Message is displayed when the driver’s door is opened without turning the power switch
to OFF with the shift lever in any position other than P.
Shift the shift lever to P.
■If “Shift Is in N Release Accelerator Before Shifting” is shown
Message is displayed when th e accelerator pedal has been depressed and the shift lever
is in N. Release the accel erator pedal and shift the shift lever to D or R.
■If “Maintenance Required Soon” is shown (U.S.A. only)
Indicates that all maintenance according to the driven distance on the maintenance
schedule
* should be performed soon.
Comes on approximately 4500 miles (7200 km) after the message has been reset.
If necessary, perform maintenance.
*: Refer to the separate “Scheduled Maintena nce” or “Owner’s Manual Supplement” for
the maintenance interval applicable to your vehicle.
Comes on⎯Does not sound
Indicates a condition, such as malfunc-
tion of electrical components, their
condition, or indicates the need for
maintenance
Flashes⎯Does not sound
Indicates a situation, such as when an
operation has been performed incor-
rectly, or indicates how to perform an
operation correctly
System
warning
lightWarning buzzer*Warning
Page 517 of 608
5178-2. Steps to take in an emergency
ES300h_OM_OM33D45U_(U)
8
When trouble arises
Chock the tires.
Slightly loosen the wheel nuts (one
turn).
Turn the tire jack portion by hand
until the notch of the jack is in con-
tact with the jack point.
The jack point guides are located under
the rocker panel. They indicate the jack
point positions.
Replacing a flat tire
1
Flat tireWheel chock positions
FrontLeft-hand sideBehind the rear right-hand side tire
Right-hand sideBehind the rear left-hand side tire
RearLeft-hand sideIn front of the front right-hand side tire
Right-hand sideIn front of the front left-hand side tire
2
3A
Page 518 of 608
5188-2. Steps to take in an emergency
ES300h_OM_OM33D45U_(U)
Raise the vehicle until the tire is
slightly raised off the ground.
Remove all the wheel nuts and the
tire.
When resting the tire on the ground,
place the tire so that the wheel design
faces up to avoid scratching the wheel
surface.
4
5
Page 521 of 608

5218-2. Steps to take in an emergency
ES300h_OM_OM33D45U_(U)
8
When trouble arises
■The compact spare tire
●The compact spare tire is identified by the label “TEMPORARY USE ONLY” on the
tire sidewall.
Use the compact spare tire tempor arily, and only in an emergency.
●Make sure to check the tire inflation pressure of the compact spare tire. (→P. 545)
■When using the compact spare tire
As the compact spare tire is not equipped wi th a tire pressure warning valve and trans-
mitter, low inflation pressure of the spare tire will not be indicated by the tire pressure
warning system. Also, if you replace the compact spare tire after the tire pressure warn-
ing light comes on, the light remains on.
■When the compact spare tire is equipped
The vehicle becomes lower when driving with the compact spare tire compared to when
driving with standard tires.
■If you have a flat front tire on a road covered with snow or ice
Install the compact spare tire on one of the rear wheels of the vehicle. Perform the follow-
ing steps and fit tire chains to the front tires: Replace a rear tire with the compact spare tire.
Replace the flat front tire with the tire removed from the rear of the vehicle.
Fit tire chains to the front tires.
1
2
3
Page 523 of 608

523
ES300h_OM_OM33D45U_(U)8-2. Steps to take in an emergency
8
When trouble arises
If the hybrid system will not start
One of the following may be the cause of the problem:
●The electronic key may not be functioning properly. (
→P. 526)
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
●There may be a malfunction in the immobilizer system. ( →P. 76)
●There may be a malfunction in the steering lock system.
●The hybrid system may be malfunctioni ng due to an electrical problem such
as electronic key battery depletion or a blown fuse. However, depending on
the type of malfunction, an interim meas ure is available to start the hybrid sys-
tem. ( →P. 524)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( →P. 527)
●The 12-volt battery terminal connections may be loose or corroded.
(→ P. 457)
One of the following may be the cause of the problem:
●The 12-volt battery may be discharged. ( →P. 527)
●One or both of the 12-volt battery terminals may be disconnected. ( →P. 457)
Contact your Lexus dealer if the problem cannot be repaired, or if repair procedures
are unknown.
Reasons for the hybrid system not star ting vary depending on the situation.
Check the following and perform the appropriate procedure:
The hybrid system will not start even though the correct starting proce-
dure is being followed. ( →P. 168)
The interior lights and headlights are d im, or the horn does not sound or
sounds at a low volume.
The interior lights and headlights do not turn on, or the horn does not
sound.
Page 528 of 608

5288-2. Steps to take in an emergency
ES300h_OM_OM33D45U_(U)
Connect a positive jumper cable clamp to the positive (+) battery terminal
on your vehicle.
Connect the clamp on the other end of the positive cable to the positive (+)
battery terminal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery terminal on the
second vehicle.
Connect the clamp at the other end of the negative cable to a solid, station-
ary, unpainted metallic point away fr om the 12-volt battery and any moving
parts, as shown in the illustration.
Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximatel y 5 minutes to recharge the 12-volt bat-
tery of your vehicle.
Open and close any of the doors of your vehicle with the power switch off.
Maintain the engine speed of the seco nd vehicle and start the hybrid system
of your vehicle by turning th e power switch to ON mode.
Make sure the “READY” indicator come s on. If the indicator does not come
on, contact your Lexus dealer.
Once the hybrid system has started, remove the jumper cables in the exact
reverse order from which they were connected.
Once the hybrid system starts, have th e vehicle inspected at your Lexus dealer
as soon as possible.1
2
3
4
4
5
6
7
8
Page 529 of 608

5298-2. Steps to take in an emergency
ES300h_OM_OM33D45U_(U)
8
When trouble arises
■Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio system while the hybrid system is stopped.
●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 12-volt battery
The electricity stored in the 12-volt battery w ill discharge gradually even when the vehicle
is not in use, due to natural discharge and the draining effects of certain electrical appli-
ances. If the vehicle is left for a long time, the 12-volt battery may discharge, and the
hybrid system may be unable to start. (The 12-volt battery recharges automatically while
the hybrid system is operating.)
■When recharging or replacing the 12-volt battery
●In some cases, it may not be possible to un lock the doors using the smart access system
with push-button start when the 12-volt battery is discharged. Use the wireless remote
control or the mechanical key to lock or unlock the doors.
●The hybrid system may not start on the first attempt after the 12-volt battery has
recharged but will start normally after the second attempt. This is not a malfunction.
●The power switch mode is memorized by the vehicle. When the 12-volt battery is
reconnected, the system will retu rn to the mode it was in before the 12-volt battery was
discharged. Before disconne cting the 12-volt battery, turn the power switch off.
If you are unsure what mode the power switch was in before the 12-volt battery dis-
charged, be especially careful when reconnecting the 12-volt battery.
Page 530 of 608

5308-2. Steps to take in an emergency
ES300h_OM_OM33D45U_(U)
WARNING
■Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flammable gas
that may be emitted from the 12-volt battery:
●Make sure each jumper cable is connected to the correct terminal and that it is not
unintentionally in contact with any other than the intended terminal.
●Do not allow the other end of the jumper cab le connected to the “+” terminal to come
into contact with any other parts or metal surfaces in the area, such as brackets or
unpainted metal.
●Do not allow the + and - clamps of the jump er cables to come into contact with each
other.
●Do not smoke, use matches, cigarette light ers or allow open flame near the 12-volt
battery.
■12-volt battery precautions
The 12-volt battery contains poisonous and co rrosive acidic electrolyte, while related
parts contain lead and lead compounds. Ob serve the following precautions when han-
dling the 12-volt battery:
●When working with the 12-volt battery, always wear safety glasses and take care not
to allow any 12-volt battery fluids (acid) to come into contact with skin, clothing or the
vehicle body.
●Do not lean over the 12-volt battery.
●In the event that 12-volt battery fluid comes into contact with the skin or eyes, immedi-
ately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention can be
received.
●Always wash your hands after handling the 12-volt battery support, terminals, and
other battery-related parts.
●Do not allow children near the 12-volt battery.
■After recharging the 12-volt battery
Have the 12-volt battery inspected at yo ur Lexus dealer as soon as possible.
If the 12-volt battery is deteriorating, continued use may cause the 12-volt battery to
emit a malodorous gas, which may be de trimental to the health of passengers.
■When replacing the 12-volt battery
→P. 459