Lexus GS450h Owner's Manual page 79

Sounds and vibrations specific to a hybrid vehicle
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There may be no engine sound or vibration even though the vehicle is able to move with
the "READY" indicator is illuminated. 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 operating and
are not a malfunction:
Motor sounds may be heard from the engine compartment.
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Sounds may be heard from the hybrid battery (traction battery) behind the rear seats
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when the hybrid system starts or stops.
Relay operating sounds such as a snap or soft clank will be emitted from the hybrid bat-
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tery (traction battery), behind the rear seats, when the hybrid system is started or
stopped.
Sounds from the hybrid system may be heard when the trunk lid is open.
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Sounds may be heard from the transmission when the gasoline engine starts or stops,
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when driving at low speeds, or during idling.
Engine sounds may be heard when accelerating sharply.
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Sounds may be heard due to regenerative braking when the brake pedal is depressed
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or as the accelerator pedal is released.
Vibration may be felt when the gasoline engine starts or stops.
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Cooling fan sounds may be heard from the air intake vents on the both sides of the rear
●
seatback.
Maintenance, repair, recycling, and disposal
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Contact any authorized Lexus retailer or Lexus authorized repairer, or any reliable
repairer regarding maintenance, repair, recycling and disposal. Do not dispose of the
vehicle yourself.
Customization
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Settings (e.g. on/off operation of the EV indicator) can be changed.
(Customizable features: P. 561)
GS450h_300h_OM_OM30F92E_(EE)
1-2. Hybrid system
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