My Garmin nuvi 255W unit won't charge at all with the car charger. At first, it would charge when plugged in only if I put a little sideways pressure on the mini-usb connection with the car charger, but now that won't even work. I haven't checked yet to see if it will charge with a cord besides the car charger.

SOURCE: My garmin nuvi 255w frozen...

you will find a reset button on the outer edge that you can press with a pencil or the like... don't press too hold and i believe you hold it for about fifteen seconds

SOURCE: System Software Missing on Garmin Nuvi 255W

Hi,
Take a look at this site, http://www.garmin.be/missing.html Download and unzip the software, plug your garmin in the USB and start the updater.exe program. It gets you started again. Later on you can use the Webupdater to get possible newer software..
It worked for me and my Zumo550
Goodluck
Auke

SOURCE: Charging a garmin nuvi 255w

From dead flat it takes about 9-10 hours
do not leave on charger for more than that otherwise you will overheat and burn it out.
After each use recharge for about 3-4 hours depending on whether the unit has been used for that lengthyof time

SOURCE: Open the case of a Garmin nuvi 255w

i am wondering why you want to open it.

There are some small parts that will fall out unless you are very careful and even more difficult to put back when you try and close it up
. Other than to change the battery there are no fuses or user repairable parts inside.

Harry

• 343 Answers
• Posted on Feb 06, 2010

SOURCE: Need to know how to charge garmin nuvi 255w using

Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} There are three ways to charge the internal battery in your automotive GPS unit.1

1. Use the provided vehicle power cable that came with your GPS unit. The unit will charge while powered on and using the device as well as when the GPS unit is powered off and plugged into a running vehicle. About 3 hrs for a full charge. If the unit will not charge in the vehicle, check the fuse in the power cable for the unit and the power outlet in the vehicle.
2. Use an AC power adaptor. Some units come with this power cable to plug the GPS unit into a wall outlet allowing the GPS unit to take a charge. For units that do not come with this cable, one can be purchased from Garmin's online store.
3. For most units, the final way of charging the battery is to plug the GPS into a powered on computer with a USB cable2. This method of charging will be a trickle charge and it may take longer (like a full day) than the other two options, however it will still charge the battery. A USB cable is provided with a few GPS models. For those that don't come with this cable, one can either be ordered from the online store or you can use a standard USB to mini-USB cable that fits the unit and plugs into your computer.