gigaman

I own the Nuvi 765 an love it beside the problem with the bluetooth function.
The problem is when I talk on the phone via bluetooth and FM transmission. I can hear the person I'm talking to clearly via my car speakers but he/she can't hear me (half of the time, the other half of the time it's working fine.). It's realy fustrated when that happened. I kept shouting and the other person kept saying "hello, hello".
I ended up had to power off garmin and talk directly to the phone which is now unlawful and can be ticketed.
I contacted Garmin and was advised to download updated software (version as of 4/2009. I bought my garmin in Nov 2009 ?). Anyway, it didn't help after I updated with downloaded software.
I'm using the Google G1 phone. I think the problem is with the FM transmission.
Anyone's having the same problem that I am having and how to solve this problem ?

HumVee

gigaman, is the 765T's speaker too quiet for you? If not, I'd try not using it with the FM function and see if your problem clears up.

gigaman

I tried different FM chanels, external microphone and the problem still there half of the time. Sometime the Nuvi works fine, sometime it does not.
If I use the internal speaker instead of the FM transmittion, everything is ok. So, it can be concluded that the problem is the FM transmittion and not the phone or the microphone.
It realy sucks because while I'm enjoying the stereo music stored on my SD card through my car speakers, the phone ring, and if the problem occured, either I have to turn off the Nuvi and talk directly with the phone (illegal in CA and can be ticketed), or switch over the internal speaker which involved many steps and can be dangerous while I'm driving.
I hope that Nuvi will fix this problem.

HumVee

It's a bummer that you're having problems with the FM transmitter, gigaman. Frankly, I've never had much luck with them, on any device that included them. I can't stand the frequent interference from other signals, having to seek another channel, etc.... I looked up the specifications of your nüvi 765T, and see that it has a 3.5 mm headphone jack. If you can utilize that with your car stereo, it would provide a much more stable and enjoyable audio experience (IMHO)!

Many car stereos have an AUX (Auxilary) input these days (even my wife's stock Toyota stereo). All you need to use it is a double ended (male to male) 3.5 mm stereo cable. If you can't find one locally, they're very inexpensive online. If your stereo doesn't have an auxilary input, but does have an old fashioned cassette deck (that still works), you can get an audio cassette adapter. Unfortunately, if it's a CD player without any sort of auxilary input, then you're hosed! So, will a wired connection be a possibility for you?

maneco

I'm also having all the same problems as Gigaman, I’ve tried everything, remote mics, all possible volume settings, 1/2 dozen different phones, nothing works! Grrrrrrr! Garmin make great GPS systems but these kinds of issues drives me nuts!!! The phones listed on the compatibility table are sooo out of date. I wish Garmin would give the users a manual Bluetooth configuration option so we could adjust the volumes from both ends of the call, in my case it seems as though some kind of VOX issue is taking place when the remote caller volume is too loud or noisy, possibly feedback control. I like the way the hearing aid industry solves these sorts of issues and that is to ask the user, via a selection list, what the problem is and then applies appropriate settings to correct the problem.
Update – VOX issue confirmed – if the remote caller mutes their phone the problem disappears!
</SPAN>

HumVee

It seems unfair to me (IMHO), to lay all these problems at the feet of Garmin. Bluetooth chips are manufactured by a handful of manufacturers, and companies that incorporate these features into their devices are at the mercy of their OEM when it comes to BT versions, standards and implementation. All FM transmitters have interference and drift problems, regardless of manufacturers - part of the problem is that there's federal regulation on how much power a microtransmitter is allowed to punch out. Also, I'd be very leery about using FM transmission with a hands-free speakerphone setup in the first place! You're beaming your half a phone call out on a publicly available, unencrypted FM radio signal that anybody can pick up if they're close enough and happen to be scanning through their tuner's radio frequencies! maneco or gigaman, have you tried using a wired connection from the audio out jack of the GPS unit to the Aux input of the car stereo?

Whenever you have a device that merges a bunch of different features (say GPS, media player & handsfree Bluetooth speakerphone), you're going to have tradeoffs. The best you can hope for is that the primary feature (GPS in this case) is stellar, and the other features are at least adequate. It's extremely unlikely that you're going to find a GPS device (from any brand) that is going to excel as an entertainment device and speakerphone - if you do, let us know what it is! Until then, if you want first class GPS, first class media playback and first class BT handsfree capabilities...you're better off buying a separate GPS unit, car stereo (with a data cable that connects to your favorite digital music player) and BT handfree kit or headphone. Sure that's going to set you back a bunch of money, and be less convenient to set up and use - but thats the price of excellence.

Heat00

Hey Humvee...are you saying I can use my bluetooth through the stereo using a 3.5 cable? I have an aux jack in my car... guess ineed to check if my 1490 has this jack...which it should right?? going to look now.

btw, i received my replacement unit today, will test tomorrow. i'm starting to think it is my phone as without bt enabled today, sound on unit was fine all day lol.

but even with the larger louder 1490 speaker, it doesn't compare to using it through the car stereo... this is a great idea.. ihope i can do it as well.

Heat00

sorry to kind of highjack your thread, OP

HumVee

If your GPS unit has an audio out jack, you can use the 3.5 mm cable to pipe the sound out from the GPS unit to the car stereo to listen to the MP3 player, or to allow you to hear the other party better if the GPS unit has Bluetooth. You must still use Bluetooth to pair the GPS to your phone, in order to make & receive calls. I don't think the 1490T has an audio out jack, Heat00.

peptomedia

Fixing Bluetooth in 765T:
Problem: It connects to my phone but no sound! The voice is heard via hand set not the GPS!

I had the same problem and contacting the garmin help it solved the problem.
Here is their advice.

Go to Garmin.com and make sure you register your device first and get the software updates. Go to webupdater and let it update your bluetooth software and DSP software. also on your phone make sure the setting is set to transfer the call to GPS or bluetooth set.

Here is garmin's reply to me:
Thank you for contacting Garmin International. I will be glad to help you with this.
Run the Webupdater and make sure the Bluetooth in the Garmin is up to date.
Try unpairing the phone and the Garmin and delete from both. In the Garmin change its' friendly name to GPS765. Then reconnect the phone and the NUVI.
Make sure the phone is on the Garmin Bluetooth compatibility list. See below link

Garmin | Bluetooth®


second e mail:


Thank you for contacting Garmin International. It is possible that the Bluetooth in the Nuvi may be corrupted, and if that is the case, a software update may not necessarily fix the issue. What I would try to do is delete the Bluetooth software entirely from the unit, then add it back in using WebUpdater.
To do this, hook up the unit to your computer, and if you are running Windows, then go to My Computer (or Computer) and under the part that says Devices with Removable Storage, you should see your unit show up. It should say Garmin, or Nuvi, or something to indicate that it is hooked up to the computer. If you have a Mac, it should show up on the desktop.
Once you see your unit, double click on it to enter it, then open up the Garmin folder. In this folder, please find and delete the folder that says RemoteSW, and once that is deleted, please disconnect the unit from the USB cable and let it load up to the main menu, and once it is loaded up, hook up the unit back to the computer.

Next, run WebUpdater and make sure to get any Bluetooth firmware and DSP software in the additional updates section, and make sure to update your unit with this. Once the software is updated, you should be able to use your phone with the unit with no problem.
If the issue still occurs, we can try to do a master reset to see if that helps fix the issue. To do a master reset on your unit, make sure the unit is powered off, and then press and hold down on the bottom right hand corner of the touchscreen. While holding the screen, press the power button until the unit comes on, and then let it go, but keep the touchscreen held down. After a few moments, you will get a message that says, “Do you really want to erase all user data?” Tap yes, and the unit will reset and reboot.

Keep in mind this will reset all user settings and eliminate any user data, including possibly your favorites, but it should not affect the maps or operating software.
Hopefully that helps, but if the problem continues, please let us know.



It worked for me.
Make sure you have registered your device first. I personally do not like to delete anything without a back up.

Heat00

Interesting. I did the update on my last unit and it didn't help.
My new unit got here last night and so far bt is ok. Need a whole day to test it.
My phone is too new and doesn't show on the compatibility list at all.
Hopefully the new unit will solve problem.

HumVee

Thank you, peptomedia, for sharing the Garmin support suggestions!

Heat00

mine got solved by getting a new unit

we'll see if it's fixed.

now if I jsut had the 3.5 jack to use the stereo lol.

Elplasmo

I decided to use the 3.5 audio jack instead of the FM transmitter, with my 765t, in hopes that it would be more of a consistent signal. It works great, however I get a squelching noise because I have to turn the stereo volume up so high. I bought a new 3.5mm cable and that didn't help. The Nuvi's volume was set at 80%, just set it up to 100% but havn't had a chance to test it yet......anyone try this yet? I plan on running the webupdate too.