RL V6-3.5L (2007)
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Cellular connection quality
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Signal strength
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Cellular coverage
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Ambient weather conditions that affect cellular signals
When a client complains about dropped calls, ask questions about when or where the calls are dropped, such as:
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Do you drive the same route on a regular basis?
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Does the call drop in the same location?
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Where do you keep your cell phone?
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Have you compared the number of dropped calls using the HFL versus making calls from the handset?
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Does your phone have an antenna that needs to be extended?
Many reasons for a dropped call are not related to the HFL system. Here are some causes for dropped calls:
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If the quantity of dropped calls is about the same when the client uses the HFL system versus the handset, the issue is likely due to the cellular phone
or carrier.
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If the phone is equipped with a retractable antenna it needs to be extended to maximize signal strength.
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If a client also notices that the calls tend to drop in the same areas, the HFL system may be operating normally, but something about the area
diminishes cellular coverage to a point where the call drops.
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Hills or mountains can block or interfere with cellular signals.
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High-rise buildings, bridges, or other large structures may block or interfere with cellular signals.
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Placing the cell phone in a purse, in a metal briefcase, under the seat, in the glove box, or in the trunk can all affect signal reception.
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There are coverage gaps in the cellular service. When driving, a call is typically passed from one tower to another. If the client drives through an area
where there is a coverage gap between towers, the call drops.
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Electrical storms, heavy rain, or overcast conditions interfere with signal strength.
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The cell phone battery's state of charge can affect signal reception. A low battery may reduce the phone's ability to boost the antenna's power and
function properly, especially in low signal strength areas. Some phone manufacturers trade off signal transmission and reception strength for battery
life. As the battery weakens, the signal strength may also weaken. Some cell phones may operate more effectively than others in low signal strength
areas, especially with a partially charged battery, and depending on whether or not the retractable antenna is fully extended (if applicable). On these
models, make sure the antenna is always extended to maximize signal strength and extend battery life.
Phone Will Not Automatically Connect to the HFL
If a client complains that their cell phone is not automatically connecting to the HFL system when they enter the vehicle, do this:
1.
Make sure the Bluetooth feature is turned on in the cell phone.
2.
Make sure the cell phone is properly paired to the HFL system.
3.
Do a soft reset to the cell phone.
4.
Check if the phone has an Authorized Connection or Trusted option.
5.
Check the battery and signal strength on the cell phone. Pairing a phone requires optimal signal strength and a nearly full battery.
Incoming Calls
If a client complains that they cannot receive incoming calls through the HFL system, see if the call is routing to the cell phone instead of the HFL
system. An easy way to know if the call is routed to the cell phone is when the client says, I can't hear the caller, but they can hear me."
