2023 TOYOTA SIENNA HYBRID auxiliary battery

4777-2. Steps to take in an emergency
7
When trouble arises
instructions (P.512).
●If any of the following messages
are shown on the multi-informa-
tion display, it may indicate a mal-
function. Have the vehicle
inspected by your Toyota dealer
immediately.
• “Smart Key System Malfunction”
• “Hybrid System Malfunction”
• “Check Engine”
• “Hybrid Battery System Malfunc-
tion”
• “Accelerator Syst em Malfunction”
●If any of the following messages
are shown on the multi-informa-
tion display, it may indicate a mal-
function. Immediately stop the
vehicle and contact your Toyota
dealer.
•“Braking Power Low”
• “12-Volt Battery Charging System Malfunction”
• “Oil Pressure Low”
●If any of the following messages
are shown on the multi-informa-
tion display, the vehicle may have
run out of fuel. Stop the vehicle in
a safe place and, if the fuel level is
low, refuel the vehicle.
• “Hybrid System Stopped”
• “Engine Stopped”
●If “Low Auxiliary Battery See
Owner’s Manual” is shown
• When the display goes off after
several seconds
*:
Maintain the hybri d system opera-
tion for more than 15 minutes and
charge the 12- volt battery.
• When the display does not go off:
Start up the hybrid system using the
procedures for “If the 12-volt battery
is discharged” ( P.504)
*: Displays for about 6 seconds
●If “Maintenance Required for Trac-
tion Battery Cooling Parts See
Owner’s Manual” is shown, the fil-
ter may be clogged, the air intake
vent may be blocked, or there may
be a gap in the duct. Therefore, perform the follo
wing correction
procedure.
• Cleaning the hybrid battery (trac-
tion battery) air intake vents
(
P.440)
If the warning message is shown
even if the vents are cleaned,
have the vehicle inspected by
your Toyota dealer.
■If “Engine Oil Level Low Add or
Replace” is displayed
The engine oil level may be low.
Check the level o f the engine oil,
and add engine oil if necessary.
This message may be displayed if
the vehicle is stopped on a slope.
Move the vehicle to a level surface
and check if the message disap-
pears.
■If “Hybrid System Stopped
Steering Power Low” is dis-
played
This message is displayed if the
hybrid system is stopped while driv-
ing.
When steering wheel operations are
heavier than usual, grip the steering
wheel firmly and operate it using
more force than usual.
■If “Hybrid System Overheated
Output Power Reduced” is
shown
The message may be shown when
driving under severe operating con-
ditions. (For example, when driving
up a long steep hill or driving up a
steep hill in reverse.)
Coping method: P.512
■If “Traction Battery Needs to be
Protected Refrain from the Use
of N Position” is shown
This message may be displayed
when the shift lever is in N.
As the hybrid battery (traction bat-
tery) can not be charged when the
shift lever is in N, shift the shift lever
to P when the vehicle is stopped.

4797-2. Steps to take in an emergency
7
When trouble arises
the message is resolved. ( P.268,
464)
●PCS (Pre-Collis ion System)
●LTA (Lane Tracing Assist)
●Dynamic radar cruise control with
full-speed range
■If “Maintenance Required
Soon” is shown
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.
Please reset the message after the
maintenance is performed.
(  P.403)
*: Refer to the separate “Scheduled
Maintenance Guide” or “Owner’
Manual Supplement” for the main-
tenance interval applicable to your
vehicle.
■If “Maintenance Required Visit
Your Dealer” is shown
Indicates that all maintenance is
required to correspond to the driven
distance on the maintenance sched-
ule
*.
Comes on approximately 5000
miles (8000 km) after the message
has been reset. (The indicator will
not work properly unless the mes-
sage has been reset.)
Perform the necessary mainte-
nance. Please reset the message
after the maintenance is performed.
(  P.403)
*: Refer to the separate “Scheduled
Maintenance Guide” or “Owner’
Manual Supplement” for the main-
tenance interval applicable to your
vehicle.
■If “Oil Maintenance Required
Soon” is displayed
Indicates that the engine oil should
be scheduled to be changed.
Check the engine oil and change it if
necessary.
After changing the engine oil, make
sure to reset t he message.
(  P.415)
■If “Oil Maintenance Required
Visit Your Dealer” is displayed
Indicates that the engine oil should
be changed.
Check and change the engine oil
and oil filter by yo ur Toyota dealer.
After changing the engine oil, make
sure to reset t he message.
(
P.415)
■Warning buzzer
 P.471
NOTICE
■“High Power Consumption
Power to Climate Temporar-
ily Limited” is frequently
shown
There is a possible malfunction
relating to the charging system or
the 12-volt battery may be deteri-
orating. Have the vehicle
inspected by your Toyota dealer.
■If “Low Auxiliary Battery See
Owner’s Manual” is displayed
frequently
The 12-volt battery may have
deteriorated.
As the battery may discharge in
this state when left unattended,
have the battery inspected by
your Toyota dealer.

Alphabetical Index575
Interior lights .......................... 363Switch................................... 364
Wattage ................................ 524
Intuitive parking assist Function ............................... 312
Warning message ................ 314
J
JackPositioning a floor jack ......... 412
Vehicle-equipped jack .......... 490
Jack handle ............................. 490
Jam protection function Moon roof ............................. 205
Power back door .................. 157
Power windows .................... 202
Sliding doors ........................ 143
K
Keyless entrySmart key system................. 165
Wireless remote control ....... 130
Keys ......................................... 128 Battery-saving function......... 166
Electronic key ....................... 128
If the electronic key does not operate properly ................. 502
If you lose your keys ............ 500
Key number plate ................. 128
Keyless entry................ 130, 165
Mechanical key .................... 131
Power switch ........................ 234
Replacing the battery ........... 444
Warning buzzer .................... 165
Wireless remote control key . 130
Knee airbags ............................. 41
L
Lane Tracing Assist (LTA) ..... 278 Operation ............................. 278 Warning messages
...............288
Language (multi-information dis- play) ...............................115, 539
LATCH anchors ........................68
Lever Auxiliary catch lever .............410
Hood lock release lever ........410
Shift lever .............................241
Turn signal lever . ..................245
Wiper lever ...................257, 260
License plate lights Light switch...........................251
Replacing light bulbs ............448
Wattage ................................524
Light bulbs Replacing .............................448
Wattage ................................524
Lights AHB (Automatic High Beam) 253
Fog light switch .....................257
Headlight switch ...................251
Illuminated entry system .......365
Interior lights .........................364
Personal lights ......................364
Rear interior light ..................364
Replacing light bulbs ............448
Turn signal lever . ..................245
Vanity lights ..........................374
Wattage ................................524
LTA (Lane Tracing Assist) .....278 Operation..............................278
Warning messages ...............288
Luggage compartment light 152, 156Wattage ................................524
M
Maintenance Do-it-yourself maintenance ..408
General maintenance ...........404
Maintenance data .................516
Maintenance requirements ...402