Ford 2002 Focus Owner's Manual page 187

Driving
To prevent electrical shock,
do not use your heater with
ungrounded electrical systems or
two pronged (cheater) adapters.
Guarding against exhaust fumes
Although odorless and colorless,
carbon monoxide is present in
exhaust fumes. Take precautions to
avoid its dangerous effects.
If you ever smell exhaust
fumes of any kind inside
your vehicle, have your dealer
inspect and fix your vehicle
immediately. Do not drive if you
smell exhaust fumes. These fumes
are harmful and could kill you.
Have the exhaust and body
ventilation system checked
whenever:
• the vehicle is raised for service.
• the sound of the exhaust system
changes.
• the vehicle has been damaged in
a collision.
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