Troubleshooting
When any of the following faults occurs, please troubleshoot it by
the solution. If the fault persists, please contact your dealer or
service provider.
Issue
Description
Solution
Poor satellite
signal
The device is blocked by metal
objects.
Remove the metal objects away
from the device.
Power-on
failure
The battery is low.
Connect the device to an
external p
The SIM card slot is damaged.
Contact your dealer for a
replacement.
Failed to
access the
network
The SIM card is attached
incorrectly.
Re-attach it.
The metal side of the SIM card
is stained.
Wipe it with a clean cloth.
Replace it.
The SIM card is damaged or
invalid.
Try it in a service area.
The device is out of GSM
service areas.
Try it in an area with strong
signals.
The signal is poor.
Check if the device is securely
connected with the OBD port of
the vehicle.
LED off
The contact is poor.
Check if the device is securely
connected with the OBD port of
the vehicle.
Failed to
query a
location
Your SIM card has no GPRS
services activated.
Please contact the network
operator and activate GPRS
services.
The SIM is in arrears.
Recharge the SIM.
The device does not respond to a
command.
Check the device and make sure
that the device can access the
network and the SIM card has
text services activated.
Summary of Contents for TO4S
Page 5: ...Installing the Device ...
