Page 547 of 660

5477-2. Steps to take in an emergency
7
When trouble arises
RX450h_U_OM0E013U
■If “Forward Camera System Unavailable” or “Forward Camera System
Unavailable Clean Windshield” is displayed (if equipped)
The following systems may be suspended until the problem shown in the mes-
sage is resolved.
●PCS (Pre-Collision System)
●LKA (Lane-Keeping Assist)
●LDA (Lane Departure Alert with steering control)
●Dynamic radar cruise control with full-speed range
●Dynamic radar cruise control
●Automatic High Beam
■If “Oil Maintenance Required Soon” is shown
Indicates that the engine oil is schedule d to be changed. (The indicator will not
work properly unless the message has been reset.)
Check the engine oil, and change if necessary. After changing the engine oil,
the message should be reset. ( P. 478)
■If “Oil Maintenance Required” is shown
Indicates that the engine oil should be changed. (After the engine oil is
changed and the message has been reset.)
Check and change the engine oil, and o il filter by your Lexus dealer. After
changing the engine oil, the message should be reset. ( P. 478)
■If “Maintenance Required Soon” is displayed (U.S.A. only)
Indicates that all maintenance according to the driven distance on the mainte-
nance schedule
* should be performed soon.
Comes on approximately 4500 miles (7200 km) after the message has been
reset.
If necessary, perform maintenance. Plea se reset the message after the main-
tenance is performed. ( P. 466)
*: Refer to the separate “Scheduled Mainte nance” or “Owner’s Manual Supplement”
for the maintenance interval applicable to your vehicle.
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5487-2. Steps to take in an emergency
RX450h_U_OM0E013U
■If “Maintenance Required Visit Your Dealer” is displayed (U.S.A. only)
Indicates that all maintenance is required to correspond to the driven distance
on the maintenance schedule
*.
Comes on approximately 5000 miles (8000 km) after the message has
been reset.
(The indicator will not work properly unless the message has been reset.)
Perform the necessary maintenance. Please reset the message after the main-
tenance is performed. ( P. 466)
*: Refer to the separate “Scheduled Maintenance” or “Owner’s Manual Supplement”
for the maintenance interval applicable to your vehicle.
■System warning lights
The master warning light does not come on or flash in the following cases. Instead, a sep-
arate system warning light will come on along with a message shown on the multi-infor-
mation display.
●“Braking Power Low Visit Your Dealer”:
The brake system warning light (yellow) come on. ( P. 536)
●“Antilock Brake System Malfunction Visit Your Dealer”:
The ABS warning light comes on. ( P. 537)
●“Charging System Malfunction See Ow ner's Manual” (F SPORT models):
The charging system warning light comes on. ( P. 536)
■Warning buzzer
P. 540
NOTICE
■“High Power Consumption Partial Limit On AC/Heater Operation” is frequently
shown
There is a possible malfunction relating to the charging system or the 12-volt battery
may be deteriorating. Have the vehicle inspected by your Lexus dealer.
Page 652 of 660

652Alphabetical 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 ........................ 83
R