Page 328 of 500
3286-3. Do-it-yourself maintenance
AVALON (U)_(OM41456U)
Check the radiator and condenser and clear away any foreign objects. 
If either of the above parts is ex tremely dirty or you are not sure of
their condition, have yo ur vehicle inspected by your Toyota dealer.
Radiator and condenser
CAUTION
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause seri\
-
ous injuries, such as burns. 
     
        
        Page 423 of 500

4237-2. Steps to take in an emergency
7
When trouble arises
AVALON (U)_(OM41456U)
●The needle of the engine coolant temperature gauge ( P.  7 7 )
enters the red zone or a loss of engine power is experienced.
(For example, the vehicle speed does not increase.)
● Steam comes out from under the hood.
Stop the vehicle in a safe place and turn off the air conditioning sys-
tem, and then stop the engine.
If you see steam: 
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled
down sufficient ly, inspect the
hoses and radiator core (radia-
tor) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
The coolant level is satisfactory
if it is between the “F” and “L”
lines on the reservoir.
Reservoir
“F” line
“L” line
Radiator cap
If your vehicle overheats
The following may indicate that  your vehicle is overheating:
Correction procedures
1
2
3
1
2
4
1
2
3
4 
     
        
        Page 424 of 500
4247-2. Steps to take in an emergency
AVALON (U)_(OM41456U)
Add engine coolant if neces-
sary.
Water can be used in an emer-
gency if engine coolant is unavail-
able.
Start the engine and turn the air conditioning system on to check
that the radiator cooling fans oper ate and to check for coolant leaks
from the radiator or hoses.
The fans operate when the air conditioning system is turned on immedi-
ately after a cold start. Confirm that  the fans are operating by checking the
fan sound and air flow. If it is difficult to check these, turn the air condition-
ing system on and off repeatedly. (The fans may not operate in freezing
temperatures.)
If the fans are not operating: 
Stop the engine immediately and contact your Toyota dealer.
If the fans are operating: 
Have the vehicle in spected at the nearest Toyota dealer.
5
6
7 
     
        
        Page 425 of 500

4257-2. Steps to take in an emergency
7
When trouble arises
AVALON (U)_(OM41456U)
CAUTION
■When inspecting under the hood of your vehicle
Observe the following precautions. 
Failure to do so may result in serious injury such as burns.
● If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot.
● Keep hands and clothing (especially a tie, a scarf or a muffler) away from
the fans and belts.
NOTICE
■When adding engine coolant
Wait until the engine has cooled down before adding engine coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot engine too
quickly can cause damage to the engine.
■ To prevent damage to the cooling system
Observe the following precautions:
● Avoid contaminating the coolant with foreign matter (such as sand or dust
etc.).
● Do not use any coolant additive.
●Do not loosen the radiator cap and the
coolant reservoir cap while the engine
and radiator are hot.
High temperature steam or coolant
could spray out. 
     
        
        Page 493 of 500

493Alphabetical index
AVALON (U)_(OM41456U)
Paddle shift switches .............. 166
Parking brake ........................... 170Operation .............................. 170
Parking brake engaged warning buzzer ................... 388
Parking lights ........................... 172 Light switch ........................... 172
Replacing light bulbs............. 369
PCS (Pre-Collision System) .... 220 Function ................................ 220
PCS OFF switch ................... 221
Warning light ......................... 390
Personal lights ......................... 254
Power easy access system .... 119
Power outlets ........................... 271
Power steering (Electric 
Power Steering system) ....... 215 Warning light ......................... 390
Power windows........................ 134
Jam protection function......... 135
Operation .............................. 134
Window lock switch............... 134
Pre-Collision System (PCS) .... 220 Function ................................ 220
PCS OFF switch ................... 221
Warning light ......................... 390 Radar cruise control (dynamic 
radar cruise control) ............. 198
Radiator .................................... 328
Rear personal lights ................ 254
Rear seat heaters .................... 275
Rear sunshade......................... 278
Rear turn signal lights ............ 169 Replacing light bulbs ............ 371
Turn signal lever ................... 169
Wattage ................................ 438
Rear view mirror Inside rear view mirror .......... 129
Outside rear view mirrors ..... 131
Rear view monitor system
*
Rear window defoggers .......... 252
Refueling .................................. 189 Capacity................................ 432
Fuel types ............................. 432
If the fuel filler door cannot be opened .............. 192
Opening the fuel tank cap..... 191
Replacing
Electronic key battery ........... 350
Fuses .................................... 352
Light bulbs ............................ 361
Tires...................................... 400
Reporting safety defects  for U.S. owners...................... 464
Resetting the message 
indicating maintenance 
is required.............................. 310
PR
*: Refer to the “NAVIGATION A ND MULTIMEDIA SYSTEM OWNER’S
MANUAL”.