Question about Garmin Nuvi 660 GPS Receiver

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Please help,Nuvi 660's microphone issue

When making or receiving calls i am not heard by the other party. I can hear them well and i have made sure it is not on mute. The system worked well until today as i was always heard when speaking through it. Please help as i am not underwarranty. Is a broke microphone reparable, as i figure that is reason for this problem as all settings are the same and i never changed them from when the 660 worked perfectly. Anyone else had this issue, how was it resolved?

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Re: Please help,Nuvi 660's microphone issue

I know this is a very old question, but just in case anyone searches for it in the future:
The problem is that the connector for the microphone comes detached from the circuit board. It is a surface mount connector but can't easily be fixed as the pad lifts off the board, and the track to the pad is on a lower layer.
It is possible to fix it by doing 'micro-surgery' and adding new tracks from two resistors to the connector, but it's difficult and not for the novice (or those with shaky hands).
In general, this is a fairly terminal fault, although if someone contacts me I can send photos of the fix I did to mine.


Posted on Nov 30, 2009

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Re: Please help,Nuvi 660's microphone issue

Hey jsobell, I'd love a few pictures if you have them. How do we exchange email addresses? I couldn't locate yours.

Posted on Mar 05, 2010

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Re: Please help,Nuvi 660's microphone issue

I have had settings change for no reason. I had to go back and re-set all optional settings. The locations and addresses did not disappear.

Posted on Oct 30, 2007

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My garmin nuvi 660 is frozen . how can I do?

Reset the nuvi 660:

1 Disconnect from external power.

2 Flip antenna up.

3 Locate and press small button labeled "RESET" in the antenna recess on rear of nuvi 660.

4 Connect to external power source.

The nuvi will reset, power up and operate normally. If this was helpful, please rate it 4 thumbs up - thanks & good luck!

Sep 20, 2011 | Garmin Nuvi 660 GPS Receiver

2 Answers

I have had my Garmin for four years. Recently it has started shutting off when I'm driving with the set plugged into the adapter outlet. If I press the power switch, it will reboot, but then after a...

Garmin is voluntarily recalling certain nuvi devices that contain a specific battery that was manufactured by a third-party supplier within a limited date code range.
Garmin has identified potential overheating issues with the use of these batteries in certain nuvi devices with a specific printed circuit board (PCB) design. Additional information about the nuvi battery PCB recall can be found in Service Alert Number: 1035.

The models that may be impacted by the nuvi battery PCB recall are the 200W, 250W, 260W, 7xx and 7xxT (where xx is a two-digit number). To determine if your unit is affected, please visit and enter your nuvi's serial number. If your unit has the specific PCB design and contains a battery from the specific date range, you will be given instructions on how to return your nuvi for a battery replacement at no charge.
You should not attempt to remove or service the battery on your own; all battery replacements must be serviced through Garmin's authorized service provider.
If you do not have web access, you may contact Garmin through one of the phone numbers below:
  • In the United States and Canada, call (866) 957-1981
  • In North America and South America outside the U.S. or Canada call (913) 397-8200
  • In Europe, Middle East, and Africa, call +44 870 850 1242 or 0808 238 0000
  • In Asia, call 886/2.2642.9199
  • In Australia, call 1800 113 738; and in New Zealand call 0800 427 652
Repair time will vary based upon location. U.S. customers, please allow 10-16 business days to receive your repaired or replacement device. Canadian customers, due to increased shipping and customs clearance times, please allow 20-30 business days to receive your repaired or replacement device.

Garmin sincerely regrets the inconvenience that this recall has caused and is making every effort to cooperate with customers, dealers, and regulatory agencies worldwide to ensure all parties are assisted according to national regulatory standards

May 24, 2011 | Garmin Nuvi 660 GPS Receiver

1 Answer

Cannot acquire satellites

I have had issues in the past with my Nuvi when inside or even under a tree. Make sure you have a clear view of the sky directly above you and give it a few minutes to acquire.

Aug 22, 2010 | Garmin Nuvi 660 GPS Receiver

1 Answer

Nuvi 660 will not figure a route and states "the memory is full"

Haven't heard of this issue but there's a lot of surplus stuff in the memory that can be safely deleted. Try connecting to the computer so you can see the files on the nuvi. Remove a lot of unnecessary voices and text languages. If you need Turkish or whatever in the future it can always be reloaded via the free Garmin WebUpdater. If you don't have WebUpater download it anyway (from the Garmin web site) as it's an easy way to check your GPS has the latest software and bug fixes.

Nov 03, 2009 | Garmin Nuvi 660 GPS Receiver

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Garmin Nuvi 660 cradle socket is broken.

I called Garmin at 1-800-800-1020 and spoke to a customer service rep. Indicated I was driving down the road and the GPS fell out of the cradle socket...which the GPS could have broke. They said no problem and are sending me a new cradle socket at no charge. Good Luck.

Jul 16, 2009 | Garmin Nuvi 660 GPS Receiver

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The phone information isn't stored in your Nuvi. Each time it pairs with your phone the call, phonebook and other information is retrieved by the GPS.

To manage your phone activity you have to do it within the cell phone itself. Clear your messages and the next time you pair with the Nuvi you'll notice everything is gone.


Nov 22, 2008 | Garmin Nuvi 660 GPS Receiver

1 Answer

Microphone not picking up any sound in bluetooth mode.

Hi Joe,

First, I would go to the Garmin website and update the bluetooth software. Garmin just released v3.4 a few days ago (November of 2008). Use their webupdater to upgrade the BT firmware.

When you update the firmware, it will erase your phone paring data and you will have to re-pair the phone with your Nuvi.

Now, if that doesn't fix your microphone issue, you have either one of the following two problems:

1. The microphone is a condenser microphone. It's about a 1/4" in diameter and sits behind the front slot located in the lower left hand corner. The microphone has two wires (red & black) that run from the microphone to the main board. At the end of the wires is a 2 position plug that plugs into the main board. This plug can come loose as there is no lock mechanism on it.

2. The microphone is defective.

Please do not try to take apart your Nuvi unless you have the right tools. I have received many emails from people who have further damaged their Nuvi, trying to get it open.

Please let me know if you need further help with this problem.

Good Luck,
- Jim

Nov 18, 2008 | Garmin Nuvi 660 GPS Receiver

1 Answer


I have both a 660 and problems

May 01, 2008 | Garmin Nuvi 660 GPS Receiver

1 Answer

Hard wiring the Nuvi 660

Make sure you use the proper kit for hardwiring. The Garmin DC adapter setp down the voltage from 12vdc to 5vdc. If you don't get the right kit you could fried your unit.

Nov 02, 2007 | Garmin Nuvi 660 GPS Receiver

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