Why does my Harman Kardon GPS-810 GPS GPS-810 not have a good GPS signal?
- MMichael WilliamsAug 19, 2025
If your Harman Kardon GPS-810 GPS is not getting a good GPS signal, ensure that the device has a clear and unobstructed view of the sky.

Why does my Harman Kardon GPS-810 GPS GPS-810 not have a good GPS signal?
If your Harman Kardon GPS-810 GPS is not getting a good GPS signal, ensure that the device has a clear and unobstructed view of the sky.
Why is there no sound from the Harman Kardon GPS-810 GPS-810 FM transmitter?
If you're not getting any sound when using the FM transmitter on your Harman Kardon GPS-810, make sure that both your vehicle's FM radio and the GPS-810 FM transmitter are tuned to the same frequency.
How to fix static on Harman Kardon GPS-810 GPS GPS-810 FM transmitter?
If you experience static or a loss of clarity in the sound when using the FM transmitter on your Harman Kardon GPS-810, it's likely that the vehicle's FM radio frequency has static. To resolve this, find a quiet FM frequency on your car radio and set the GPS-810’s FM transmitter to match it.
How to increase volume on Harman Kardon GPS GPS-810 navigation?
If the volume is too low for navigation voice-guidance prompts on your Harman Kardon GPS, try adjusting the volume control. You can also adjust the VOLUME MIXER.
How to adjust brightness on Harman Kardon GPS-810 GPS-810?
If the screen on your Harman Kardon GPS is too bright or too dim, you can adjust the screen brightness using the volume control. Alternatively, you can adjust the screen brightness in the SETTINGS menu.
What to do if Harman Kardon GPS-810 GPS GPS-810 does not turn on?
If your Harman Kardon GPS-810 does not turn on, check the LOCK switch and charge the battery for 6 hours.
What to do if Harman Kardon GPS-810 GPS GPS-810 is unresponsive?
If your Harman Kardon GPS-810 is unresponsive to the touchscreen or won’t power off, reset the GPS-810 using a paper clip or similar item.
Why won't my Harman Kardon GPS-810 GPS GPS-810 play media?
If your Harman Kardon GPS-810 will not play music or videos, and does not display photos, insert an SD card that has media loaded on it.
Why does my Harman Kardon GPS-810 GPS-810 screen color change unexpectedly?
If the screen color on your Harman Kardon GPS-810 unexpectedly changes mode (DAY > NIGHT or NIGHT > DAY), the Color Mode is likely set to AUTO. Change the Color Mode to your desired mode in the SETTINGS menu.
Why doesn't my Harman Kardon GPS GPS-810 navigation map stay zoomed?
If the navigation map on your Harman Kardon GPS does not stay zoomed to the desired distance, it may be because the Map Screen is locked. When the screen is locked, the map reverts to the default zoom level after 3 seconds. Unlock the Map Screen.
| Display Size | 4.3 inches |
|---|---|
| Display Resolution | 480 x 272 pixels |
| Touchscreen | Yes |
| Internal Memory | 2 GB |
| SD Card Slot | Yes |
| GPS Receiver | SiRFstarIII |
| Battery | Lithium-ion |
| Battery Life | Up to 3 hours |
| Supported Audio Formats | MP3, WMA |
| Supported Image Formats | JPEG |
| Speaker | Yes |
| Headphone Jack | Yes |
| USB | Yes, mini-USB |
| Text-to-Speech | Yes |
| Bluetooth | Yes |
| FM Transmitter | Yes |
| Processor | 400 MHz |
| Preloaded Maps | North America |
| Traffic Updates | Yes |
Details the items included in the GPS-810 box and initial handling instructions.
Illustrates and describes the front, back, top, bottom, and side components of the GPS-810.
Details the front touchscreen/microphone, back antenna/speaker, top ON/OFF button, and bottom reset/USB ports.
Explains side controls and the essential first step of charging the battery.
Instructions for charging the GPS-810 battery for at least 6 hours before initial use.
Steps for updating firmware and acquiring the initial GPS signal.
Guides the user through initial setup steps including language, units, and time zone.
Explains methods to plan a trip, including address, place, city center, and postal code.
Step-by-step instructions on how to input street address details for navigation.
Details how to find destinations using the POI database and navigate to city centers.
Instructions for setting routes to specific street intersections and postal codes.
Methods for setting and navigating to home address and previously visited/saved destinations.
Explains the elements and information displayed on the navigation map screen during a trip.
Details how to lock/unlock the map, change map views (2D, 3D), and zoom.
Describes options available from the navigation menu, including planning trips, traffic, and route settings.
Explains how to view the entire route, get turn-by-turn directions, add destinations, and detour.
Covers settings for avoidances, distance units, GPS data, route priority, voice, and map icons.
Describes the SOURCE screen used to access Navigation, Music, Photos, Videos, Phone, and Settings.
Lists compatible media formats and explains methods for transferring files to an SD card.
Step-by-step guide for transferring files using MTP mode with Windows Media Player.
Instructions for transferring files using the drag-and-drop USB Mass Storage method.
Details how to select and play music, control playback, and view song information.
Instructions on how to select and play video files. Includes safety warning.
Explains how to browse, view thumbnails, and display individual photos from the SD card.
Step-by-step process for pairing and connecting a Bluetooth-enabled phone to the GPS-810.
Instructions for placing calls via phonebook/history and receiving incoming calls.
Covers adjustments for screen brightness, color mode (Day/Night), and language selection.
Adjusts volume levels for different functions and configures the FM transmitter for audio broadcast.
Allows configuration of time, demo content, and PC connection modes.
Provides safety warnings and advice on selecting a suitable location for mounting the device in a vehicle.
Detailed instructions for installing the mounting bracket on the windshield or dashboard.
Guides on connecting power, audio, microphone, and outlines methods for playing audio in the vehicle.
Instructions for installing the wireless remote control and its mounting base in the vehicle.
Explains how to use the remote for navigation map control and music playback.
Describes using the remote for phonebook access and alphabetical searching.
Steps to re-synchronize the remote control's RF frequency with the GPS-810.
Addresses common problems like power, GPS signal, media playback, and screen issues with their solutions.
Addresses issues with screen color, sound, map zoom, Bluetooth, and FM transmitter.
Provides detailed technical specifications for the GPS-810, including GPS, CPU, memory, screen, and battery.