2016 LEXUS RX450H fuse

5617-2. Steps to take in an emergency
7
When trouble arises
RX450h_U_OM0E013U One of the following may be the cause of the problem: ●
The electronic key may not be functioning properly.
(  P. 5 6 4 )●
There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ●
There may be a malfunction in the immobilizer system. (  P. 8 5 )●
There may be a malfunction in the steering lock system. ●
The hybrid system may be malfunctioni ng due to an electrical problem such
as electronic key battery depletion or a blown fuse. However, depending on
the type of malfunction, an interim meas ure is available to start the hybrid sys-
tem. (  P. 5 6 2 )
One of the following may be the cause of the problem: ●
The 12-volt battery may be discharged. (  P. 5 6 8 )●
The 12-volt battery terminal connections may be loose or corroded.
(  P. 4 8 3 )If the hybrid system will not start Reasons for the hybrid system not starting vary depending on the situation.
Check the following and perform the appropriate procedure:
The hybrid system will not start ev en though the correct starting proce-
dure is being followed. (  P. 2 3 2 )
The interior lights and headlights are dim, or the horn does not sound or
sounds at a low volume.

570 7-2. Steps to take in an emergency
RX450h_U_OM0E013U Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximately 5 minutes to recharge the 12-volt bat-
tery of your vehicle.
Open and close any of the doors of your vehicle with the power switch off.
Maintain the engine speed of the second vehicle and start the hybrid system
of your vehicle by turning the power switch to ON mode.
Make sure the “READY” indicator comes on. If the indicator light does not
come on, contact your Lexus dealer.
Once the hybrid system has started, remove the jumper cables in the exact
reverse order from which they were connected.
Close the exclusive jump starting terminal cover, and reinstall the fuse box
cover to its original position.
Once the hybrid system starts, have th e vehicle inspected at your Lexus dealer
as soon as possible. ■
Starting the hybrid system when the 12-volt battery is discharged
The hybrid system cannot be started by push-starting. ■
To prevent 12-volt battery discharge ●
Turn off the headlights and the audio system while the hybrid system is off. ●
Turn off any unnecessary electrical components when the vehicle is running at a low
speed for an extended period, such as in heavy traffic. ■
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 discharge and th e draining effects of certain electrical appli-
ances. If the vehicle is left for a long time, the 12-volt battery may discharge, and the
hybrid system may be unable to start. (The 12-volt battery recharges automatically while
the hybrid system is operating.) ■
When the 12-volt battery is removed or discharged ●
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 mechanical key to lock or unlock the doors. ●
The hybrid system may not start on the first attempt after the 12-volt battery has
recharged but will start normally after the second attempt. This is not a malfunction.●
The power switch mode 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 power switch off.
If you are unsure what mode the power switch was in before the 12-volt battery dis-
charged, be especially careful when reconnecting the 12-volt battery. ●
The power back door must be initialized. (  P. 1 5 0 )6
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646 Alphabetical index
RX450h_U_OM0E013U Front turn signal lights
Replacing light bulbs ......................... 513
Turn signal lever ................................. 244
Wattage ................................................. 590
Fuel
Capacity ................................................ 584
Fuel gauge ................................................ 97
Information ............................................. 591
Refueling................................................. 267
Type ......................................................... 584
Fuel filler door ........................................ 267
Refueling................................................. 267
When the fuel filler door
cannot be opened .........................269
Fuses ..........................................................508
Garage door opener .......................... 445
Gauges .........................................................97
Glove box ................................................ 422
Grocery bag hooks ............................. 428 Head restraints........................................ 179
Head-up display ...................................... 118
Headlight cleaner ................................ 260
Headlights ................................................. 251
Automatic headlight leveling ....... 253
Automatic High Beam.................... 255
Light switch............................................. 251
Replacing light bulbs .........................513
Wattage ................................................ 590
Windshield wiper linked
headlight illumination ................... 254
Heated steering wheel ........................ 415
Heaters
Automatic air conditioning
system .............................................. 405
Heated steering wheel ................... 415
Outside rear view mirrors ........... 409
Seat heaters .............................. 415 , 416
High mounted stoplight
Replacing .................................................513
Hill-start assist control .........................381
Hood ..........................................................473
Open ....................................................... 473
Hooks
Cargo hooks ........................................427
Cargo net hooks ................................427
Front passenger footwell
hooks.................................................... 442
Grocery bag hooks ......................... 428
Retaining hooks (floor mat)............. 28G H

652 Alphabetical index
RX450h_U_OM0E013U Radar cruise control (dynamic
radar cruise control) ........................ 323
Radar cruise control
(dynamic radar cruise control
with full-speed range) ........................ 311
Radiator ....................................................480
Rear Cross Traffic Alert .................... 363
Rear door sunshades .......................... 443
Rear seat
Folding down the rear
seatbacks ............................................. 165
Rear seat heaters....................................416
Rear side marker lights
Light switch ............................................ 251
Replacing light bulbs ......................... 513
Rear turn signal lights
Replacing light bulbs ......................... 513
Turn signal lever ................................. 244
Wattage ................................................. 590
Rear view mirror
Inside rear view mirror ..................... 183
Outside rear view mirrors .............. 185
Rear window defogger ...................... 409
Rear window wiper.............................. 265 Refueling................................................... 267
Capacity .................................................584
Fuel types...............................................584
Opening the fuel tank cap ............ 267
When the fuel filler door
cannot be opened ......................... 269
Regenerative braking.............................78
Remote Touch
* .................................... 398
Replacing
Electronic key battery .................... 506
Fuses ....................................................... 508
Light bulbs...............................................513
Tires .......................................................... 549
Windshield wiper inserts ...............504
Reporting safety defects
for U.S. owners ...................................622
Resetting the message indicating
maintenance is required .................466
Rev indicator ..............................................99
Rev peak ......................................................99
Road accident cautions ........................ 83R