Honda Civic Owners Manual: 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.
Do not modify or attempt to repair any of the electrical components.
Accessories
When installing accessories, check the following:
Do not install accessories on the windshield. They can obstruct
your view and
delay your reaction to driving conditions.
Do not ...
See also:
Honda Civic Owners Manual. Low Smart Entry Remote Signal Strength
The vehicle transmits radio waves to locate the smart entry remote when
locking/
unlocking the doors and fuel fill door, opening the trunk, or starting the
engine.
In the following cases, locking/unlocking the doors, opening the trunk, or
starting
the engine may be inhibited or operation ...
