differential TOYOTA SIENNA HYBRID 2023 Owners Manual

2314-1. Before driving
4
Driving
down too long or applying the
brakes too frequently. This
could cause the brakes to
overheat and result in
reduced braking efficiency.
 Due to the added load of the
trailer, your vehicle’s hybrid
system may overheat on hot
days (at temperatures over
85°F [30°C]) when driving up
a long or steep grade. If the
engine coolant temperature
gauge indicates overheating,
immediately turn off the air
conditioning (if in use), pull
your vehicle off the road and
stop in a safe spot. ( P.509)
 Always place wheel blocks
under both the vehicle’s and
the trailer’s wheels when
parking. Apply the parking
brake firmly, and put the
transmission in P. Avoid park-
ing on a slope, but if unavoid-
able, do so only after
performing the following:
1 Apply the brakes and keep
them applied.
2 Have someone place wheel
blocks under both the vehi-
cle’s and trailer’s wheels.
3 When the wheel blocks are in
place, release the brakes
slowly until the blocks absorb
the load.
4 Apply the parking brake
firmly. 5
Shift into P and turn off the
hybrid system.
 When restarting after parking
on a slope:
1 With the transmission in P,
start the hybrid system. Be
sure to keep the brake pedal
depressed.
2 Shift into a forward gear. If
reversing, shift into R.
3 If the parking brake is in man-
ual mode, release the park-
ing brake. ( P.246)
4 Release the brake pedal, and
slowly pull or back away from
the wheel blocks. Stop and
apply the brakes.
5 Have someone retrieve the
blocks.
■Break-in schedule
If your vehicle is new or equipped
with any new power train compo-
nents (such as an engine, transmis-
sion, differential or wheel bearing),
Toyota recommends that you do not
tow a trailer until the vehicle has
been driven for over 500 miles (800
km).
After the vehicle has been driven for
over 500 miles (800 km), you can
start towing. However, for the next
500 miles (800 km), drive the vehi-
cle at a speed of less than 45 mph
(72 km/h) when towing a trailer, and
avoid full throttle acceleration.
■Maintenance
●If you tow a traile r, your vehicle
will require more fr equent mainte-
nance due to the additional load.
(See “Scheduled Maintenance
Guide” or “Owner ’s Manual Sup-
plement”.)

5218-1. Specifications
8
Vehicle specifications
*: The fluid capacity is the quantity of reference.If replacement is necessary, contact y our Toyota dealer.
*: The fluid capacity is the quantity of reference.
If replacement is necessary, contact y our Toyota dealer.
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark pl ug gap.
Electrical system (12-volt Battery)
Open voltage at 68°F (20°C):
12.0 V or higher
(Turn the power switch to OFF and turn on
the high beam headlights for 30 seconds.)
If the voltage is lower than the standard
value, charge the battery.
Charging rates5 A max.
Hybrid transmission
Fluid capacity*4.6 qt. (4.4 L, 3.9 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Hybrid transmission fluid type
Using transmission fluid other than the above type may cause ab normal
noise or vibration, or ultimately damage the transmission of yo ur vehicle.
Rear differential (rear electric motor) (AWD models)
Fluid capacity*1.8 qt. (1.7 L, 1.5 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Transmission fluid type
Using transmission fluid other than the above type may cause ab normal
noise or vibration, or ultimately damage the transmission of yo ur vehicle.

Alphabetical Index573
EV drive mode ........................ 239
Event data recorder (EDR)......... 8
EV indicator .............................. 80
F
Flat tire ............................ 480, 490Tire pressure warning system........................................... 424
Floor mats ................................. 32
Fluid Brake ............................ 417, 522
Hybrid transmission.............. 521
Rear differential .................... 521
Washer ................................. 418
Fog lights Replacing light bulbs ............ 448
Switch................................... 257
Front door courtesy lights Wattage ................................ 524
Front doors .......... ................... 132
Front passenger’s seat belt reminder light ....................... 471
Front passenger occupant clas- sification system .................... 51
Front seat heaters .................. 361
Front seats .............................. 170 Adjustment ........................... 170
Cleaning ............................... 399
Correct driving posture ........... 33
Driving position memory....... 179
Head restraints ..................... 183
Memory recall function ......... 181
Power easy access system .. 179
Seat heaters ......................... 361
Seat position memory .......... 179
Seat ventilators .................... 361
Front side marker lights ........ 251 Light switch .......................... 251
Replacing light bulbs ............ 448
Front turn signal lights Replacing light bulbs ............ 448
Turn signal lever................... 245 Fuel
Capacity ...............................518
Fuel gauge .....................97, 101
Information ......... ..................526
Refueling ..............................262
Type .............................518, 526
Warning light ........................470
Fuel consumption information Average fuel consumption ....125
Current fuel consumption .....125
Fuel filler door.........................263 If the fuel filler door cannot be opened ...............................501
Refueling ..............................262
Fuel gauge.........................97, 101
Fuses .......................................446
G
Garage door opene r ...............388
Gauges ..............................97, 101
Glove box ................................367
Grocery bag hooks .................387
H
Headlights ...............................251 AHB (Automatic High Beam) 253
Light switch...........................251
Replacing light bulbs ............448
Head restraints .......................183
Head-up display ......................118 Driving information display area...........................................118
Driving support system display area ....................................120
Head-up display switch ........119
Hybrid System Indicator .......121
Navigation system-linked display ...........................................118
Pop-up display......................120
Settings ................................119
Head-up display switch..........119