Page 518 of 664
518
SIENNA_OM_01999-08001_(U)
7-3. Do-it-yourself maintenance
■Front turn signal lights (vehicles with LED type daytime run-
ning lights)For left side only:
Open the fuse box cover. ( P. 506)
Turn the bulb base counter-
clockwise.
Remove the light bulb.
1
2
3
Page 519 of 664
SIENNA_OM_01999-08001_(U)
5197-3. Do-it-yourself maintenance
7
Maintenance and care
■Front side marker lights (vehicles with LED type daytime run-
ning lights)
For left side only:
Open the fuse box cover. ( P. 506)
Turn the bulb base counter-
clockwise.
Remove the light bulb.
1
2
3
Page 520 of 664
520
SIENNA_OM_01999-08001_(U)
7-3. Do-it-yourself maintenance
■Rear turn signal lights (vehicles with LED type stop/tail lights)Remove the securing bolts
and remove the unit.
Turn the bulb base counter-
clockwise.
Remove the light bulb.
1
2
3
Page 521 of 664
SIENNA_OM_01999-08001_(U)
5217-3. Do-it-yourself maintenance
7
Maintenance and care
■Rear turn signal lights and stop/tail lights (vehicles with bulb
type stop/tail lights)
Remove the securing bolts
and remove the unit.
Unplug the connector while
pushing the lock release.
Turn the bulb base counter-
clockwise.Rear turn signal lights
Stop/tail lights
Remove the light bulb. Rear turn signal lights
Stop/tail lights
1
2
3
1
2
4
1
2
Page 522 of 664
522
SIENNA_OM_01999-08001_(U)
7-3. Do-it-yourself maintenance
■Tail and back-up lightsRemove the back door trim
board.
Turn the bulb base counterclockwise.
Remove the light bulb.
1
2
Vehicles with bulb type
stop/tail lightsVehicles with LED type stop/tail
lights
Back-up light
Tail light Tail light
Back-up light
1
2
1
2
3
Vehicles with bulb type
stop/tail lightsVehicles with LED type stop/tail
lights
Back-up light
Tail light Tail light
Back-up light
1
2
1
2
Page 523 of 664
SIENNA_OM_01999-08001_(U)
5237-3. Do-it-yourself maintenance
7
Maintenance and care
■License plate lightsRemove the back door trim
board.
Turn the bulb base counter-
clockwise.
Remove the light bulb.
■Replacing the following bulbs
If any of the lights listed below has burnt out, have it replaced by
your Toyota dealer.
● Headlight low beams (discharge bulbs)
● Parking lights (LED type)
● Daytime running lights (LED type)
● Side turn signal light (if equipped)
● Stop/tail lights (LED type) and rear side marker lights
● High mounted stoplight
● Outer foot lights (if equipped)
1
2
3
Page 524 of 664
524
SIENNA_OM_01999-08001_(U)
7-3. Do-it-yourself maintenance
■Discharge headlights (if equipped)
If voltage to the discharge bulbs is insufficient, the bulbs may not come on, or
may go out temporarily. The discharge bulbs will come on when normal
power is restored.
■ LED lights
The daytime running lights (LED type), parking lights (LED type), stop/tail
(LED type), side turn signal light, r ear side marker lights and high mounted
stoplight consists of a number of LEDs. If any of the LEDs burn out, take your
vehicle to your Toyota dealer to have the light replaced.
■ Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the headlight lens does not
indicate a malfunction. Contact your Toyota dealer for more information in the
following situations:
●Large drops of water have built up on the inside of the lens.
● Water has built up inside the headlight.
■ When replacing light bulbs
P. 508
Page 525 of 664

SIENNA_OM_01999-08001_(U)
5257-3. Do-it-yourself maintenance
7
Maintenance and care
WARNING
■Replacing light bulbs
● Turn off the lights. Do not attempt to replace the bulb immediately after
turning off the lights.
The bulbs become very hot and may cause burns.
● Do not touch the glass portion of the light bulb with bare hands. When it is
unavoidable to hold the glass portion, use and hold with a clean dry cloth
to avoid getting moisture and oils on the bulb. Also, if the bulb is scratched
or dropped, it may blow out or crack.
● Fully install light bulbs and any parts used to secure them. Failure to do so
may result in heat damage, fire, or water entering the headlight unit. This
may damage the headlights or cause condensation to build up on the lens.
● Do not attempt to repair or disassemble the bulb, socket, electrical wiring,
or sub components. This may cause serious injury due to electric shock.
●Vehicles with discharge headlights:
While the low beam headlights are
turned on, and for a short time after they
have been turned off, metal compo-
nents at the rear of the headlight
assembly will be extremely hot. To pre-
vent burns, do not touch these metal
components until you are certain they
have cooled down.
Metal components