H39
Category
Questions
Answers
Hydrogen
System
(7 items)
35. In the beginning, when driving the new
vehicle, I hear hissing sounds regularly
from the hood while the vehicle is
stopped. Is this noise cause for con-
cern?
In the beginning, the purity of hydrogen in the hydrogen tank of the
new vehicle may be somewhat low. It is a normal noise which
occurs when the system discharges the hydrogen more frequently
compensating the low hydrogen purity. The fuel efficiency of the new
vehicle may be low in the beginning due to the frequent hydrogen
discharge. However, this is a normal condition. In general, the hydro-
gen purity returns to normal range after refueling 3-4 times.
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