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Wrangler
EMI/RFI WARNINGS
Laboratory tests performed by the Food and Drug Administration (FDA) have shown that radio waves can cause
unintended motion of electric PMVs. Radio waves are a form of electromagnetic energy (EM). When electromag-
netic energy adversely affects the operation of an electrical device, that adverse effect is called Electromagnetic
Interference (EMI) or Radio Frequency Interference (RFI).
EMI/RFI FREQUENTLY ASKED QUESTIONS (FAQS)
The following FAQs summarize what you should know about EMI/RFI. Use this information to minimize the risk
that EMI/RFI will adversely affect your Wrangler.
Where do radio waves come from?
Radio waves are emitted from the antennas of cellular phones, mobile two-way radios (such as walkie-talkies and
CBs), radio stations, TV stations, amateur radio (HAM) transmitters, wireless computer links, microwave sources,
and paging transmitters. Radio waves are a form of EM. Because EM is more intense closer to transmitting
antennas (sources of emission), the EM fields from two-way radios are of special concern to electric PMV users.
If EMI/RFI affects my Wrangler, what kind of motion should I expect?
This is difficult to predict. The answer would depend on a number of factors:
n The strength of the radio waves.
n The construction of your particular Wrangler.
n The location of your Wrangler (whether it is on level ground or on an incline).
n Whether or not your Wrangler is in motion.
The motion of any electric PMV affected by EMI/RFI can be erratic. The PMV may come to a sudden stop or
move in an uncontrolled manner. Also, it is possible for EMI/RFI to release the brakes of an electric PMV. Some
intense EMI/RFI can even damage the control system components of an electric PMV.
Is there any way to know for certain whether or not radio waves are the cause of any unintended motion
of my Wrangler?
Unfortunately, EMI/RFI may be difficult to recognize, since the signals from radio sources are invisible and may be
intermittent. However, the FDA recommends that you report all incidents of unintended motion or unintended
brake release of your electric PMV to the PMVs manufacturer and, if possible, determine whether or not there
was a radio wave source nearby at the time of the incident.
One precaution you can take against inadvertent motion of your Wrangler is to make certain that you or someone
else is not the cause of the unintended motion.
n Turn off your Wrangler by removing the key from the key switch when you are getting on or off of your
Wrangler.
n Never leave the key in the key switch of an unattended Wrangler.
By following these steps, you greatly reduce the risk of you or anyone else inadvertently bumping the throttle
control levers and causing the Wrangler to move unintentionally.
Has anyone been injured by the erratic, unintended motion of an electric PMV?
The FDA has reports of injuries that resulted from uncontrolled motion of electric PMVs, but it is not clear just how
many of those injuries were actually caused by EMI/RFI.
III. EMI/RFI