Honda Clarity 2017 Electric Owner's Manual page 481

uuAccessories and ModificationsuModifications
Modifications
Do not modify your vehicle in a manner that may affect its handling, stability, or
reliability, or install non-genuine Honda parts or accessories that may have a similar
effect.
Even minor modifications to vehicle systems can affect overall vehicle performance.
Always make sure all equipment is properly installed and maintained, and do not
make any modification to your vehicle or its systems that might cause your vehicle
to no longer meet federal, state, province, territory, and local regulations.
The on-board diagnostic port (OBD-II/J2534 connector) installed on this vehicle is
intended to be used only with automobile system diagnostic devices. Use of any
other type of device may adversely affect the vehicle's electronic systems or allow
them to be compromised, and could result in a system malfunction, drained battery,
or other unexpected problems.
Do not modify or attempt to repair your vehicle's high-voltage power system or
otherwise modify vehicle electrical systems. Disassembling or modifying electrical
equipment can result in a crash or a fire.
If you ever need to replace your vehicle's high-voltage battery assembly outside of
warranty coverage, we highly recommend that you only use a genuine Honda high-
voltage battery assembly. Genuine Honda high-voltage battery assemblies are
designed to work with your vehicle's power system and have been designed,
engineered and manufactured to avoid overcharging situations. Non-genuine high-
voltage battery assemblies may not have been similarly designed, engineered and
manufactured, and installation of such assemblies could result in overcharging, fires,
loss of power, or other conditions that may increase the likelihood of a crash or
injury.
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