
3417-2. Steps to take in an emergency
7
When trouble arises
7-2.Steps to take in an emergency
If your vehicle needs to be 
towed
If towing is necessary, we recom-
mend having your vehicle towed by 
your Lexus dealer or commercial 
towing service, using a wheel-lift 
type truck or flatbed truck.
Use a safety chain system for all 
towing, and abide by all state/pro-
vincial and local laws.
WARNING
Observe the following precautions. 
Failure to do so may result in death or 
serious injury.
■When towing the vehicle
LC500: Be sure to transport the vehicle 
with all four wheels raised off the ground. 
If the vehicle is towed with the tires con-
tacting the ground, the drivetrain and 
related parts may be damaged or an 
accident may occur due to a change in 
direction of the vehicle.
LC500h: Be sure to transport the vehi-
cle with all four wheels raised off the 
ground. If the vehicle is towed with the 
tires contacting the ground, the drive-
train and related parts may be damaged, 
an accident may occur due to a change 
in direction of the vehicle or electricity 
generated by the operation of the motor 
may cause a fire to occur depending on 
the nature of the damage or malfunction.
■While towing
●When towing using cables or chains, 
avoid sudden starts, etc. which place 
excessive stress on the towing eyelets, 
cables or chains. The towing eyelets, 
cables or chains may become dam-
aged, broken debris may hit people, 
and cause serious damage.
●Do not turn the engine switch 
This may lead to an accident as the 
rear wheels will be locked by the park-
ing lock. 
Also, there is a possibility that the 
steering wheel is locked and cannot be 
operated. 

3597-2. Steps to take in an emergency
7
When trouble arises
■If a message that indicates the need for the shift lever operation is shown
To prevent the shift lever from being operated incorrectly or the vehicle from moving unex-
pectedly, a message that requires  shifting the shift lever may be shown on the multi-informa-
tion display. In that case, follow the instruction of the me ssage and shift the shift lever.
■If a message that indicates the malfunction of front camera is displayed
The following systems may be suspended un til the problem shown in the message is 
resolved. ( P.198, 347)
●PCS (Pre-Collision System)
●LKA (Lane-Keeping Assist)
●Automatic High Beam
●Dynamic radar cruise control with full-speed range
■If “Engine Stopped Steering  Power Low” (LC500) or “H ybrid System Stopped Steer-
ing Power Low” (LC500h) is shown
The steering wheel may become extremely heavy. If the steering wheel becomes heavier 
than usual when operating, hold firmly and operate using more force than usual.
■If “Warming Up Maximum Vehicle Speed: 65MPH” is shown (LC500h)
The transmission is being warmed up and the ve hicle is unable to be driven over 65 mph 
(110 km/h). Wait until th e transmission warms up.
■If “Stop the vehicle in a safe place Shift to P position” is shown (LC500h)
There may be a malfunction in th e hybrid system or the shift position may be shifted to N for 
a long time. Immediately stop the vehicle and contact your Lexus dealer.
■If “Oil Maintenance Required Soon” is shown (LC500h)
The engine oil is scheduled to be changed. Check the engine oil, and change if necessary. 
After changing the engine oil,  the message should be reset. (P.295)
■If “Maintenance Required Soon” is shown
Indicates that all maintenance according to th e driven distance on the maintenance sched-
ule
* should be performed soon. The message  is shown approximately 4500 miles (7200 
km) after the message has been reset. If necessary, perform maintenance.
*: Refer to the separate “Sched uled Maintenance” or “Owner’s  Manual Supplement” for the 
maintenance interval app licable to your vehicle.
■If “Engine Oil Level Low Add or Replace” is shown
The engine oil level is low. Chec k the level of engine oil, and add if necessary. This message 
may appear if the vehicle is stopped on a slope. Move the vehicle to a level surface and 
check to see if the message disappears.
■If a message that indicates the need for referring to Owner’s Manual is shown
●If any of the following messages is shown on  the multi-information display, follow the 
instructions.
• “Engine Coolant Temp High” ( P.376, 379)
•“Battery low” ( P.369)
• “Transmission Fluid Temp High” ( P.163, 170)
●If any of the following messages is shown on the multi-information di splay, it may indicate 
a malfunction. Have the vehicle inspected by your Lexus dealer immediately.
• “Access System with  Elec. Key Malfunction” 

3747-2. Steps to take in an emergency
■When the 12-volt battery is removed or 
discharged
●Information stored in the ECU is cleared. 
When the 12-volt battery is depleted, 
have the vehicle inspected at your Lexus 
dealer.
●Some systems may require initialization. 
( P.417)
■When removing the 12-volt battery ter-
minals
When the 12-volt battery terminals are 
removed, the information stored in the 
ECU is cleared. Before removing the 12-
volt battery terminals, contact your Lexus 
dealer.
■Charging the 12-volt battery
The electricity stored in the 12-volt battery 
will discharge gradually even when the 
vehicle is not in use, due to natural dis-
charge and the draining effects of certain 
electrical appliances. If the vehicle is left for 
a long time, the 12-volt battery may dis-
charge, and the engine 
may be unable to start. (The 12-volt battery 
recharges automatically during driving.)
■When recharging or replacing the 12-
volt battery
●In some cases, it may not be possible to 
unlock 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 mechani-
cal key to lock or unlock the doors.
●The engine 
on the first attempt after the 12-volt bat-
tery has recharged bu t will start normally 
after the second attempt. This is not a 
malfunction.
●The engine switch 
is memorized by the vehicle. When the 
12-volt battery is reconnected, the system 
will return to the mode it was in before 
the 12-volt battery was discharged. 
Before disconnecting the 12-volt battery, 
turn the engine switch 
If you are unsure what mode the engine 
switch 
12-volt battery discharged, be especially 
careful when reconnecting the 12-volt 
battery.
●If the 12-volt battery discharges, it may 
not be possible to shift the shift position to 
other positions. In this case, the vehicle 
cannot be towed without lifting both rear 
wheels because the re ar wheels will be 
locked. ( P.342)
■When replacing the 12-volt battery
●Use a Central Degassing type 12-volt 
battery (European Regulations).
●Type A*1: Use a 12-volt battery that the 
case size is same  as the previous one 
(LN4), 20 hour rate capacity (20HR) is 
equivalent (80Ah) or greater, and per-
formance rating (CCA) is equivalent 
(685A) or greater. 
Type B
*2: Use a 12-volt battery that the 
case size is same  as the previous one 
(LN3), 20 hour rate capacity (20HR) is 
equivalent (70Ah) or greater, and perfor-
mance rating (CCA) is equivalent 
(600A) or greater.
• If the sizes differ, the 12-volt battery can- not be properly secured.
• If the 20 hour rate capacity is low, even if  the time period where the vehicle is not 
used is a short time, the 12-volt battery 
may discharge and engine 
●Use a 12-volt battery with a handle. If a 
12-volt battery without a handle is used, 
removal is more difficult.
●After exchanging, firmly attach the fol-
lowing items to the exhaust hole of the 12-
volt battery.
• Use the exhaust hose that was attached  to the 12-volt battery before exchanging.
• Use the exhaust hole plug included with  the 12-volt battery exchanged or the one 
installed on the battery prior to the 
exchange. (Depending on the 12-volt 
battery to be exchanged, the exhaust 
hole may be plugged.) 

4178-3. Items to initialize
8
Vehicle specifications
8-3.Items to initialize
Items to initialize
The following items must be initialized for normal system operation after such 
cases as the 12-volt battery being re connected, or maintenance being per-
formed on the vehicle:
List of the items to initialize
ItemWhen to initializeReference
Tire pressure warning system
• When rotating the tires.
• When the tire inflation pressure is  changed by changing tire size. 
(When there are  multiple speci-
fied pressures)
• After registering the ID codes.
• When the tire inflation pressure is  changed such as when changing 
traveling speed.
P.318
Power windows• When functioning abnormallyP.138
Lexus parking assist monitor
• The steering wheel has been moved while the 12-volt battery 
was being reinstalled.
• 12-volt battery power is low.Refer to “NAV- IGATION SYSTEM 
OWNER’S 
MANUAL”.
Message indicating maintenance is 
required• After the maintenance is per- formedP.295
Oil maintenance (LC500h)• After the maintenance is per-formedP.307