Mazda 3 Sport 2017 Manual page 203

Variable
voltage
alternator
CAUTION
High-current electricity fl ows through the following parts, therefore do not touch them.
      
Variable voltage alternator
       DC-DC converter
      
Capacitor
NOTE
A difference in the fuel economy may occur depending on how the vehicle's electrical
      
devices are used.
If the capacitor is to be disposed of, always consult an Authorized Mazda Dealer.
      
For details, go to the following URL.
 
http://www.mazda.com/csr/environment/recycling
 
DC-DC converter
Capacitor
When Driving
i-ELOOP
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