Question about Garmin StreetPilot c340 GPS Receiver

3 Answers

C340 wont turn back on after internal battery went dead and plugged into car adapter

Posted by on

3 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer
Re: c340

Make sure the fuse assembly did not fall out of the 12 v plug. Normal driving produces vibration, which causes things with screw assemblies to fall apart. I found the fuse, spring and positive contact in the bottom of the bag where I keep the Garmin. When I reassembled the power plug, the Garmin now works fine.

Posted on Nov 29, 2009

Re: c340

Thanks for the help. The solution worked the first time I tried. J

Posted on Aug 26, 2007

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer
Re: c340

I had the same problem recently... What I did was open the front casing and hit the reset button under the cover, then it turned on while plugged into the car adapter.

Posted on Aug 10, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

I ran the battery dead on my c340 GPS Now

You will have to open up you unit, and replacing the battery, you can get them from Garmin.

May 08, 2010 | Garmin StreetPilot c340 GPS Receiver

1 Answer

Low battery, won't charge

connect the garmin to your computer using the usb port. It will start charging then. For some reason when the battery goes dead in this unit the only way to charge it is with computer. the car adaptor will not work once the battery gets real low.

Apr 16, 2009 | Garmin StreetPilot c340 GPS Receiver

1 Answer

Wont turn on

batteries have a specific amount of electrons it can hold, but when a battery is finishing the working time reduceses, if you can access a avo meter you can check some current, using amps range on the meter before buying another one. thanks

Mar 18, 2009 | Garmin StreetPilot c340 GPS Receiver

2 Answers

My Garmin C340 is dead!!!!

I had the same problem on a trip. Required two fixes and once I did this the unit worked fine.
1. Replace the fuse in the car adapter (reason it wasn't charging when I used it in the car).
2. See the users manual on page 31 regarding resetting your C340.

Jul 21, 2008 | Garmin StreetPilot c340 GPS Receiver

1 Answer


First, be sure you are outside, in the open when making this diagnosis. If, when outside in clear view, you still have problems, try this...

Have you tried a hardware RESET? The button is hidden behind the front panel, which snaps off by a fingernail slot located directly under the GARMIN logo on the front panel.

* Use caution removing and reinstalling the front panel... it's somewhat fragile... wiggle it a little to get it off.

Press where it says "Press to Reset", hold for a second or two. Charge the unit with the car cord or USB cable, then try to turn it on again.

Once you can get the unit to (hopefully) turn ON, you should run all updates (there may be several!) using Garmin's Webupdater. (Connect to computer with USB cable first.)

Hope this helps!!

Jun 02, 2008 | Garmin StreetPilot c340 GPS Receiver

2 Answers

Dead Garmin StreetPilot c340

The battery usually has a small charge when arriving from the factory, but it can die before it is received. You should charge this by plugging it into the car or the computer.

May 08, 2008 | Garmin StreetPilot c340 GPS Receiver

1 Answer

Charging unit with AC adapter

I have a 100v A/C power / charger unit for my garmin C340 GPS that I use to charge my Garmin's battery every day. I can use thj adapter to run the GPS, or just turn it off and let it charge the GPS. But it connects dirctly to the Garmin GPS unit, not to the cradle like the Cigarrette lighter unit does. .

Mar 18, 2008 | Garmin StreetPilot c340 GPS Receiver

1 Answer

Garmin c340 went black and can't get it working

The battery was completely dead. I must not have had the cord plugged in to my lighter, or maybe it wasn't sitting properly on the cradle, and it was running on battery power. I found that when I charged it by the computer, it was ok. It is working with no problems, now.

Mar 10, 2008 | Garmin StreetPilot c340 GPS Receiver

6 Answers

Internal battery won't charge

Common issue. Steps to troubleshoot/solve:
1. Pull off face, press reset tab.
2. If unit wont turn on or if turns off immediately, connect to home computer using mini usb on side of gps (any usb cord that fits will do). This will charge the internal gps battery, which is discharged.
3. You will not be able to see the gps charge indicator while the usb cord is plugged into the unit. To check charge level, disconnect it, turn it on, and note the large "battery" icon.
4 Do you have a dead internal battery? If the gps holds a charge from your computer usb port, you don't.
5. If you have a dead battery, Google DIY replacement. With some soldering it can done for $15 total.
6. If you don't have a dead battery, the issue is charging from the cigarette lighter socket. Your car socket may have blown a fuse (check car manual). Your charger unit may have blown a fuse (unscrew the tip, check fuse inside). Also, some car sockets don't work when the ignition is off. Test yours.
7. There is a good chance the connection of the charger wire to the gps cradle is the problem. Fiddle with that. Replacement cradles are available for the c340 at about $25.
8. If your unit is not charging from the cradle/socket, buy a 12v usb cord. Plug into socket and into usb port of the gps. This is a workaround or alternative to buying a new cradle.
9. IMPORTANT: observe the "battery" icon while driving, esp. if you have doubts about charging. Basically, if you can see the icon, you're not connected to an outside (car or computer) power source. That is, if you can see the battery-charge indication, it means your battery is currently discharging and unless you get another power source to work it will be dead in a few hours.

Aug 27, 2007 | Garmin StreetPilot c340 GPS Receiver

Not finding what you are looking for?
Garmin StreetPilot c340 GPS Receiver Logo

507 people viewed this question

Ask a Question

Usually answered in minutes!

Top Garmin GPS Devices Experts

Tom Chichester

Level 3 Expert

22199 Answers

Jonathon summesfield

Level 2 Expert

284 Answers

Bill Gilhooly
Bill Gilhooly

Level 2 Expert

94 Answers

Are you a Garmin GPS Device Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides