Page 558 of 776
558 4-3. Do-it-yourself maintenance
AVENSIS_OM_OM20B88E_(EE)
If the key battery is discharged
The following symptoms may occur.
The smart entry & start system and wireless remote control will not func-
tion properly.
The operational range is reduced.
Use the following types of lithium battery
Vehicles with smart entry & start system: CR1632
Vehicles without smart entry & start system: CR2016
Batteries can be purchased at any authorized Toyota dealer or repairer,
or another duly qualified and equipped professional, jewelers, or camera
stores.
Replace only with the same or equivalent type recommended by any
authorized Toyota dealer or repairer, or another duly qualified and
equipped professional.
Dispose of used batteries according to the local laws.
Remove the depleted battery.
Insert a new battery with the
“+” terminal facing up.
STEP3 
     
        
        Page 559 of 776
559 4-3. Do-it-yourself maintenance
4
Maintenance and care
AVENSIS_OM_OM20B88E_(EE)
CAUTION
Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking.
Keep away from children. Failure to do so could result in death or serious
injury.
Certification for the smart entry & start system
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT
TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUC-
TIONS.
NOTICE
For normal operation after replacing the battery
Observe the following precautions to prevent accidents.
Always work with dry hands.
Moisture may cause the battery to rust.
Do not touch or move any other components inside the remote control.
Do not bend the battery terminals.
Please perform this operation in a clean environment to avoid garbage, oil,
etc. insertion in the key. 
     
        
        Page 595 of 776

5When trouble arises
595
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5-1. Essential information
Emergency flashers ..........  596
If your vehicle 
needs to be towed ..........  597
If you think something is 
wrong ..............................  607
Fuel pump shut off system 
(gasoline engine) ............  608
5-2. Steps to take in an 
emergency
If a warning light turns 
on or a warning buzzer 
sounds... ........................  609
If a warning message is 
displayed ........................  616
If you have a flat tire 
(vehicles with a 
spare tire for sedan) .......  640
If you have a flat tire 
(vehicles with a spare 
tire for wagon).................  654If you have a flat tire 
(vehicles with 
emergency tire 
puncture repair kit)..........  668
If the engine will not 
start.................................  693
If the shift lever cannot be 
shifted from “P” ...............  696
If the parking brake 
cannot be released .........  697
If you lose your keys .........  703
If you cannot operate the 
trunk opener (sedan) ......  704
If you cannot operate the 
back door opener 
(wagon)...........................  705
If the electronic key does 
not operate properly .......  706
If the battery is 
discharged ......................  709
If your vehicle overheats ...  714
If you run out of fuel and 
the engine stalls (diesel 
engine)............................  718
If the vehicle becomes 
stuck ...............................  719
If your vehicle has to be 
stopped in an 
emergency ......................  721 
     
        
        Page 596 of 776
596
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5-1. Essential information
Emergency flashers
Emergency flashers
If the emergency flashers are used for a long time while the engine is not
operating, the battery may discharge.
The emergency flashers are used to warn other drivers when the
vehicle has to be stopped in the road due to a breakdown, etc.
Press the switch.
All the turn signal lights will
flash. 
To turn them off press the
switch once again. 
     
        
        Page 612 of 776
612 5-2. Steps to take in an emergency
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(Flashes)Cruise control indicator light (if equipped)
Indicates a malfunction in the cruise control system.
P. 267
(Flashes)Dynamic radar cruise control indicator light (if equipped)
Indicates a malfunction in the dynamic radar cruise control 
system.
P. 273
(Flashes)Speed limiter indicator light (if equipped)
Indicates a malfunction in the speed limiter system.
P. 292
Electric power steering warning light (warning buzzer)
When the battery charge becomes insufficient or the voltage temporarily
drops, the electric power steering system warning light may come on and the
warning buzzer may sound.
CAUTION
When the electric power steering warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, firmly
hold and operate it using more force than usual.
Warning lightWarning light/Details 
     
        
        Page 636 of 776
636 5-2. Steps to take in an emergency
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Power was turned 
off due to the auto-
matic power off 
function.Next time 
when start-
ing the 
engine, 
increase 
the engine 
speed 
slightly and 
maintain 
that level 
for approxi-
mately 5 
minutes to 
recharge 
the battery.
Sounds 
onceThe electronic key 
has a low battery. 
(The message will 
be shown for about 
15 seconds.)Replace 
the elec-
tronic key 
battery. 
(P. 556)
Interior 
buzzerExterior
buzzerWarning messageDetailsCorrection 
procedure 
     
        
        Page 693 of 776

5
693
5-2. Steps to take in an emergency
When trouble arises
AVENSIS_OM_OM20B88E_(EE)
If the engine will not start
If the engine still does not start after following the correct starting
procedure (P. 200, 205) or releasing the steering lock (P. 203,
207), confirm the following points.
The engine will not start even if you are carrying the correct
key
One of the following may be the cause of the problem.
There may not be sufficient fuel in the vehicle’s tank.
Gasoline engine: Refuel the vehicle.
Diesel engine: (P. 718)
The engine may be flooded. (gasoline engine)
Try to restart the engine once more following correct starting
procedures. (P. 200, 205)
There may be a malfunction in the engine immobilizer system. 
(P. 127)
The starter motor turns over slowly, the personal/interior
lights and headlights are dim, or the horn does not sound or
sounds at a low volume
One of the following may be the cause of the problem.
The battery may be discharged. (P. 709)
The battery terminal connections may be loose or corroded. 
     
        
        Page 694 of 776
694 5-2. Steps to take in an emergency
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The starter motor does not turn over (vehicles with smart
entry & start system)
The engine starting system may be malfunctioning due to an
electrical problem such as an open circuit or a blown fuse. How-
ever, an interim measure is available to start the engine. 
(P. 695)
The starter motor does not turn over, the personal/interior
lights and headlights do not turn on, or the horn does not
sound
One of the following may be the cause of the problem.
One or both of the battery terminals may be disconnected.
The battery may be discharged. (P. 709)
There may be a malfunction in the steering lock system. (vehi-
cles with smart entry & start system)
Contact any authorized Toyota dealer or repairer, or another duly
qualified and equipped professional, if the problem cannot be
repaired, or if repair procedures are unknown.