Honda CLARITY Plug-In Hybrid 2020 Owner's Manual page 20

Energy Efficiency
As with a gasoline powered vehicle, the fuel efficiency and the range of this vehicle is most impacted by the driver's driving style. Aggressive
acceleration and high-speed driving can easily trigger the system to switch the propulsion source to the gasoline-powered engine. Climate
control system usage also has a strong impact with heavy usage negatively affecting the vehicle's range. In particular, when it is cold
outside, climate control system consumes a lot of power, so the vehicle's driving range on electric power can be reduced.
Battery Type
There are two types of batteries used in this vehicle, a standard 12-volt battery that powers the airbags, the interior and exterior lights, and
other standard 12-volt systems, and a high voltage battery that is used to power the propulsion motor and recharge the 12-volt battery.
Hybrid Vehicles
High voltage parts and high voltage wires in this vehicle are sheathed in electromagnetic shielding material; therefore, the amount of
electromagnetic waves emitted is no more greater than those emitted by household appliances or the electrical parts in conventional
vehicles.
Sounds Unique to the SPORT HYBRID i-MMD Plug-in (intelligent Multi-Mode
Drive Plug-in)
When you first start driving this vehicle, you likely will hear some unfamiliar sounds, particularly when you first turn on the power system,
while driving, and just after parking. Some of these sounds are unique to this vehicle's powertrain, fuel, and climate control systems; others
are similar to sounds generated by conventional automobiles that typically are masked by louder noises absent from a vehicle of this design.
These sounds are not a cause for concern, and you will soon recognize them as normal and thus be able to detect any new or unusual noise
should one develop.
After shutting off the engine, you may hear certain noises coming from the vehicle. Here's the lowdown:
● Noise from Under Vehicle: This noise is caused by the vacuum pump inside the fuel evaporation leakage check module (ELCM).
Depending on conditions, the pump will come on for about 15 minutes about 5 to 10 hours after engine shutoff. This noise is just normal
vehicle operation and don't indicate a vehicle problem.
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