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10 Wrangler
Are all PMVs susceptible to EMI/RFI?
Each make and model of electric PMV differs in its ability to resist EMI/RFI. That is, each PMV has a particular
level of resistance to EMI/RFI. This resistance is measured in volts per meter (V/m). A higher resistance level offers
greater protection against EMI/RFI. In other words, an electric PMV with a high resistance level is less likely to be
affected by a strong radio source than is an electric PMV with a low resistance level.
What is the FDA doing about the problem?
The FDA has written to electric PMVs manufacturers and requested that those manufacturers test their new
models of PMVs to be certain that they provide a reasonable degree of resistance against EMI/RFI. The FDA has
stated that all newly manufactured models of electric PMVs should have a resistance level of at least 20 V/m. This
resistance level provides a reasonable degree of protection against the common sources of EMI/RFI.
The FDA has also requested or recommended that:
n Electric PMV manufacturers clearly label new products with that products resistance level or state that the
resistance level is not known.
n The labeling or informational material supplied with new electric PMVs must explain what the resistance level
means and warn users about the possibility of EMI/RFI and how to avoid it.
n Electric PMV manufacturers undertake an educational program to inform electrical PMV users and their
caregivers about the problems associated with EMI/RFI and about the actions they can take to minimize the
risk of EMI/RFI.
n While there is no exact way to tell if your PMV is totally safe, an immunity level of 20 V/m (May 1994) is
generally achievable and useful. Adding accessories and components or modifying the unit may change the
susceptibility to EMI/RFI.
What can I do to find out if my Wrangler is likely to be affected by EMI/RFI?
If you have had your Wrangler for some time and have not experienced any unintended motion, it is not likely that
you will have a problem in the future. However, it is always possible that EMI problems could arise if you are close
to a source of radio waves. Therefore, it is very important for you to be alert to this possibility. The Wrangler PMV
meets or exceeds a resistance level of at least 20 V/m.
What can I do to reduce the risk of my Wrangler being affected by EMI/RFI?
Some precautions are:
n Do not turn on or use hand-held personal communications devices, such as citizens band (CB) radios and
cellular phones, while your Wrangler is turned on.
n Be aware of nearby radio wave transmitters, such as radio or TV stations and hand-held or mobile two-way
radios. Try not to operate your Wrangler too close to those transmitters. For example, if you are on an electric
PMV with a resistance level of at least 20 V/m, you should remain at least three feet from a hand-held two-way
radio and at least ten feet from a mobile two-way radio.
n Be aware that adding accessories and/or components, or modifying your Wrangler in any way, may change its
EMI/RFI resistance level and may make it more susceptible to interference from radio wave sources.
What should I do if my Wrangler moves unexpectedly?
If unintended motion or unintended brake release occurs, turn off your Wrangler (by removing the key) as soon as
it is safe to do so.
If my Wrangler moves unintentionally, where should I report the incident?
Call our headquarters at 1-800-424-8205 to report the incident.
III. EMI/RFI