Koso BA045100 Instructions Download Page 3

●Haven't used the Lap timer for over 14 days.

●You are using the lap timer with 100km+ 

away from your last turn off position then it 

will take longer to start up for positioning. 

Entering settings and fuctions index menu

4

There are two scenarios for Startup Positioning Time. 

Used the Lap Timer very frequently.

Around 1- 45 seconds.

Around 2 - 5 minutes. 

Status

Time

Startup positioning

●In the main screen settings hold the button        to enter into the settings menu.

●Function index

     a 1. Unit

     a 2. Racing

     a 3. Display (Contrast / Brightness)

     a 4. Memory

     a 5. Info

   Exit settings

5

Set up

Trouble shooting

6

The following situation does not indicate malfunction of the meter. Please check the following before taking it in for repairs.

※ If the problems persist after reviewing the above information, please contact your local distributors or us. 

●Improper connection of GPS antenna. 

→Make sure the GPS antenna is connected 

    correctly and no wires are broken.

●GPS antenna error

→Make sure the GPS antenna test light is

    flashing normally.

→Normal flashing frequency is 60 times per 

    minute.

Incorrect time zone settings

Check unit operation settings in section 4.1

Check item

Trouble

The meter doesn't work 

when the power is on.

  

Speed does not 

appear or appears 

incorrectly.

Trouble

Check item

The meter shows the 

wrong readings

Temp does not appear 

or appears incorrectly

The power doesn't supply to the meter.

→Please make sure the wiring is connected. 

    The wiring and fuse are not broken.

→The battery is broken or the battery is too

    old to supply enough power (DC 12 V) to

    make the meter for it to work.

Check the voltage of your battery,and

make sure the voltage is over DC 12 V.

The following situations are classified as normal:

●When the receiving environment is bad or the GPS

     positioning is just finished, the meter may display 

     speed when the vehicle is stationary. 

●The actual mileage and the displayed mileage in the

     meter (ODO / Trip) might have 1 % - 5 %

     accumulated difference depending on the average

     satellite signal strength and user habits. 

For more detailed instructions, please scan the QR code 

and be redirected to our Instruction tutorial or  

visit 

kosonorthamerica.com/gps-lap-timer-tutorial

.

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