Page 548 of 1014
5285-3. Using the audio system
GS450h_300h_OM_OM30D53E_(EE)
AM/FM/DAB mode tabs
Mute
“TUNE/SCROLL” knob:
Adjusting the frequency
“CH•TRACK” button:
Preset tuning/seeking the fre-
quencyRADIO mode button
Power
Vo l u m e
Preset stations1
2
3
4
5
6
7
8
Page 801 of 1014
777
6 6-3. Do-it-yourself maintenance
Maintenance and care
GS450h_300h_OM_OM30D53E_(EE)
Air conditioning filter
Turn the power switch off.
Open the glove box. Lift up
the side with the stay, discon-
nect the stay tabs and remove
the partition by pulling hori-
zontally.
Press the tabs and remove the
filter cover.
Press the tabs and remove the
filter case.
The air conditioning filter must be changed regularly to maintain
air conditioning efficiency.
Removal method
1
2
3
4
Page 806 of 1014
7826-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30D53E_(EE)
Checking and replacing fuses
Turn the power switch off.
After a system failure, see “Fuse layout and amperage ratings”
for details about which fuse to check. (P. 787)
Open the fuse box cover.
Engine compartment:
Remove the engine compart-
ment cover (P. 740) and
remove all of the clips.
Push the tabs on either side to
detach the lock and lift the lid
off while pulling the lock
plate.
When installing the lid, check
that the lock plate and the tabs
on either side are connected cor-
rectly.
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
1
2
3
Page 812 of 1014

7886-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30D53E_(EE)
8F/PMP25Multiport fuel injection system/sequen-
tial multiport fuel injection system
9H-LP RH-LO20Right-hand headlight (low beam)*1
10H-LP LH-LO20Left-hand headlight (low beam)*1
11BATT FAN
(HV)*210Hybrid battery (traction battery) cooling
fan system
12ABS MAIN 210Brake system
13ABS MAIN 110Brake system
14IGCT NO.130IGCT NO.2, IGCT NO.3, IGCT NO.4,
IGCT NO.5
15ECU-B7.5VGRS, smart entry & start system
16INV W/P10Hybrid system
17ETCS10Multiport fuel injection system/sequen-
tial multiport fuel injection system
18EPS-B10Electric power steering system
19D/C CUT30DOME, MPX-B
20HORN10Horn
21ODS5No circuit
22TV7.5Remote Touch screen
23P/I-B NO.280IG2 MAIN, EFI MAIN, EDU, F/PMP,
A/F
24ABS NO.230Motor relay
25P/I-B NO.150H-LP HI RH, H-LP HI LH, DRL, emer-
gency brake signal
26H-LP LO30H-LP LO RH, H-LP LO LH
27LH J/B-B40Left-hand junction block
28RH J/B-B40Right-hand junction block
29VGRS40VGRS
30OIL PMP60Oil pump
FuseAmpereCircuit
Page 815 of 1014
791 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS450h_300h_OM_OM30D53E_(EE)*
1: Low beam and high beam are the same bulb. (vehicles with discharge
headlights)
*
2: GS300h only.
49LUG J/B DC/DC80Luggage compartment junction block
50FAN NO.180Electric cooling fans
51PTC NO.150PTC heater
52PTC NO.250PTC heater
53HTR50Air conditioning system
54ABS NO.130Motor relay
55ECU-B NO.27.5Grill shutter
56DEICER25Windshield wiper de-icer
57ABS MAIN 310Brake system
58FILTER10Condenser
59A/C W/P7.5Air conditioning system
60SPARE10Spare fuse
61SPARE30Spare fuse
62SPARE20Spare fuse
FuseAmpereCircuit
Page 829 of 1014
805 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS450h_300h_OM_OM30D53E_(EE)
Halogen front fog lights (if equipped)
To allow enough working
space, turn the steering
wheel to the opposite side
of the bulb to be replaced.
Remove the 2 fender liner
clips.
Turn the steering wheel to the
left when replacing the right
side light bulb, and turn the
steering wheel to the right when
replacing the left side light bulb.
To take out the clips, turn the
head of the clip to unlock, then
remove by pulling.
While holding the clamp
open, pull and remove the
tabs and open the fender
liner.
Unplug the connector while
pressing the lock release.
Replacing light bulbs
1
2
3
Page 830 of 1014
8066-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30D53E_(EE)
Turn the bulb base counter-
clockwise.
Set the new light bulb.
Align the 3 tabs on the light
bulb with the mounting, and
insert. Turn it clockwise to set.
Set the connector.
After installing the connector,
shake the bulb base gently to
check that it is not loose, turn
the fog lights on once and visu-
ally confirm that no light is
leaking through the mounting.
Reinstall the fender liner
and install the clips.
Insert the clips and turn to lock.
4
5
6
7
Page 838 of 1014
8146-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30D53E_(EE)
Outer foot lights
Press the upper part of the
outside rear view mirror to
tilt the mirror face upward,
and apply protective tape to
the lower part of the mirror
cover.
Insert 2 flathead screw-
drivers wrapped in protec-
tive tape, and disconnect the
tabs behind the mirror.
Pry the mirror out toward you,
disconnecting the tabs 2 at a
time.
Work carefully, ensuring that
you do not drop the mirror.
Disconnect the connectors
behind the mirror, and
remove the mirror.
When removing the thin con-
nectors, make sure to mark one
of the connectors with a piece of
tape, to avoid mixing them up
when reinstalling.
Work carefully, ensuring that
you do not drop the mirror.
When handling the mirror, do
not touch the parts applied with
grease.
The number of connectors
equipped differs by vehicle
specification.
1
2
3