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Owners Manual_Europe_M52N75_en
1-4. Hybrid system
For safety and security
slowly discharge. For this reason, be  
sure to drive the vehicle at least once  every few months for at least 30 minutes or 16 km (10 miles). If the hybrid battery  
(traction battery) becomes fully dis- charged and you are unable to start the hybrid system, contact any authorized  
Toyota retailer or Toyota authorized  repairer, or any reliable repairer.
■Charging the 12-volt battery 
 P. 4 7 4
■After the 12-volt battery has dis- 
charged or when the terminal has  been removed and installed during exchange, etc. 
The gasoline engine may not stop even  if the vehicle is being driven by the hybrid battery (traction battery). If this  
continues for a few days, contact any  authorized Toyota retailer or Toyota authorized repairer, or any reliable  
repairer.
■Sounds and vibrations specific to a  hybrid electric vehicle 
There may be no engine sound or vibra- 
tion even though the vehicle is able to  move with the “READY” indicator is illu-minated. For safety, apply the parking  
brake and make sure to shift the shift  lever to P when parked. 
The following sounds or vibrations may  
occur when the hybrid system is operat- ing and are not a malfunction:
●Motor sounds may be heard from the engine compartment.
●Sounds may be heard from the hybrid battery (traction battery) under the rear seats when the hybrid system  
starts or stops.
●Relay operating sounds such as a 
snap or soft clank will be emitted from  the hybrid battery (traction battery), under the rear seats, when the hybrid  
system is started or stopped.
●Sounds from the hybrid system may 
be heard when the back door is open.
●Sounds may be heard from the trans-
mission when the gasoline engine  
starts or stops, when driving at low  
speeds, or during idling.
●Engine sounds may be heard when 
accelerating sharply.
●Sounds may be heard due to regener-
ative braking when the brake pedal is  depressed or as the accelerator pedal is released.
●Vibration may be felt when the gaso-line engine starts or stops.
●Cooling fan sounds may be heard from the air intake vent on the side of  
the lower part of the rear left seat.
■Maintenance, repair, recycling, and  disposal 
Contact any authorized Toyota retailer  
or Toyota authorized repairer, or any reli- able repairer regarding maintenance, repair, recycling and disposal. Do not  
dispose of the vehicle yourself.
■Customization 
Some functions can be customized.  ( P.494)
When the gasoline engine is off  
while driving, a sound is produced  
to warn pedestrians, people riding  
bicycles or other people and vehi- 
cles in the surrounding area that  
the vehicle is approaching. The  
pitch of the sound adjusts accord- 
ing to vehicle speed. When vehicle  
speed is approximately 25 km/h (16  
mph) or more, the warning system  
turns off.
■Acoustic vehicle alerting system 
In the following cases, the acoustic vehi- cle alerting system sound may be diffi-cult for pedestrians, people riding  
bicycles or other people and vehicles in 
Acoustic vehicle alerting  
system