OBD Smart Digital Meter - Model P13

Product Overview

Thank you for purchasing the OBD smart digital device. This product connects to your car's OBD2 interface via an OBD cable and displays vital driving data such as vehicle speed, engine RPM, water temperature, fuel consumption, and voltage. It is designed to help drivers keep their eyes on the road, avoiding the need to look down at the dashboard. This product does not alter any car ECU data.

(This product's Design Patent and Display Images Copyright have been registered with customs record.)

Kindly Attention

OBD2 Mode Working Voltage: 11V ~ 18Vdc (12Vdc / 200mA)

System Selection: After powering on, use the right dial to select either the OBD or GPS system. The device will automatically enter the last selected system after 5 seconds of inactivity.

Button and Port Functions

The device features several ports and a multi-functional button:

Device Layout Description: The back of the device shows a suction cup mount at the top. Below the mount are several ports: a light sensor, an alternate port, and the OBD cable interface.

• Port 1 & 2: Suction cup mount place.
• Port 3: Alternate port.
• Port 4: Light sensor, which senses external light intensity to automatically adjust screen brightness to suit the environment.
• Port 5: OBD cable interface.

Button Functions: The device is operated by a "wave button" which supports pushing left, right, short press, and long press.

• Short Press (quick press and release within 1 second):
  • (1) Switches the display mode.
  • (2) Selects a menu item after entering the setup menu.
• Long Press (press for more than 2 seconds and release):
  • (1) Enters the setting menu.
  • (2) Saves and exits after setting.
• Pull Left:
  • (1) Switches functions in the left area of the screen.
  • (2) Changes setting options.
• Pull Right:
  • (1) Switches functions in the right area of the screen.
  • (2) Changes setting options.

Function Abbreviations

Below are the abbreviations for the functions displayed by the meter:

Setting Mode (Menu Mode)

To enter the setting menu, long press the button vertically for 2 seconds. Use the dial to select menu items, and a short vertical press confirms the selection. After making adjustments, long press the button vertically for 2 seconds to save and exit.

Available Settings:

• Language Set: Choose your preferred language (EN-English, CN-Simplified Chinese, TW-Traditional Chinese).
• Sound Switch: Turn the buzzer on or off.
• Speed Alarm: Default value is 150. Adjust range is 5-200 km/h. Pull down to decrease, pull up to increase.
• Coolant Alarm: Default value is 120°. Alarm triggers when coolant temperature exceeds this value. Adjust range is 50-200°.
• RPM Alarm: Default value is 6000 r. Alarm triggers when RPM exceeds this value. Adjust range is 1000-8000 r.
• BAT Alarm: Default value is 10.5V. Alarm triggers when battery voltage is lower than this value. Adjust range is 10.0-15.0V.
• Speed Adjust: Adjust the displayed speed to match your dashboard. Default is 107%. For example, if the dashboard shows 100 Km/h and the device shows 105 Km/h, adjust the value to 102.
• Speed Offset: Adjust when the vehicle is off but the device speed is not 0. If the device shows 5 KM/H, change the default Speed Offset value to 6.
• BAT Adjust: Adjust if the battery voltage reading differs from the vehicle's. If the device voltage is 0.2V higher than the dashboard's, change the value to 98%.
• Engine Size: Set the engine displacement to match your car's (e.g., 3.6L). This helps calibrate fuel consumption readings.
• Fuel Adjust: Default value is 100%. Adjust if fuel consumption readings differ from the dashboard. For example, if the device shows 0.2L higher fuel consumption, adjust to 98%.
• Change Color 1: Sets the speed color on the main display.
• Change Color 2: Sets the color for functions on the left side of the screen.
• Change Color 3: Sets the color for functions on the right side of the screen.
• Brightness: Default is 0 (Automatic sensitivity). Values 1-8 increase brightness.
• CWT Unit: Change coolant temperature unit between °C (default) and °F.
• Speed Unit: Switch between KM/h and MPH.
• Sum Distance: Set the total driving distance to match the dashboard reading.
• Power Off Time: Default is 10 seconds. For cars with auto start/stop, set between 5-300 seconds.
• Sleep Voltage: Default is off. If the device does not auto-off, adjust voltage to 13.2V or higher.
• Factory Set: Short press to reset to factory defaults.
• Time Adjust: Default time is GMT+8 (China time). Adjust to local time by pulling the dial up/down.

Driving Test

The device offers several driving tests:

• Speedup Test: Displays speed, distance, and time taken to drive 400m and 100m.
• Acceleration Test: Measures the time taken to accelerate from 0 to 100 km/h, indicating car power.
• Brake Test: Records brake distance and time when braking from speeds over 100 KM/H.

Error Code Set

Access diagnostic information:

• Scan DTCs: Scans the ECU for error codes and displays details.
• Clean DTCs: Cleans detected DTCs. A short press of the button confirms the cleaning.
• Data Stream: Shows all vehicle data streams.

Important Note

It is recommended to unplug the device if your car will not be used for more than one week.

OBD2 System Troubleshooting

1. Screen without any display, and no power:
   • Start the car engine.
   • Check if the OBD cable is tightly connected. Pull the OBD cable multiple times to ensure connection.
   • Verify the product's power switch is on.
   • If still no display, try a different car to test. Analyze if the car's OBD diagnostic interface is functional. If not, it may require repair.
2. Only car voltage displays and automatic power off after 30 seconds:
   • This product is only compatible with OBDII and EOBD cars in OBD2 mode.
   • This product's OBD2 mode does not support OBD I and JOBD.
   • OBD2 is a car protocol standard (U.S.A Cars: 2003, Other regions: 2007).
   • If switched to GPS system, pull right on the button within 5 seconds of power to select GPS.
3. Inaccurate Speed:
   • First, check if the speed unit (KM/H or MPH) is correct. Refer to settings to switch units.
   • When the product is powered on, long press the button to enter the menu. Pull right to select "Speed Adjust", then short press to set the value. Pull left or right to change the value. (Example: If the dashboard shows 100, and the device shows 105, change the default value to 102).
4. Error on Fuel Consumption:
   • Check your car's displacement and ensure the device's engine displacement setting matches your car's (e.g., set to 2.0L for a 2.0L car).
   • If displacements match, fine-tuning may be needed. If the device's fuel consumption reading is higher than actual by 0.2L, set the parameter to 98%. Fine-tuning is optional but recommended for accuracy based on car computer data.
5. Device cannot auto power off:
   • Adjust the sleep voltage setting to 13.2V or 13.6V. The HUD should power off within 3 minutes.
6. Auto start-stop cars:
   • Adjust the shutdown voltage setting in system settings to the "COM" mode.
7. HUD crashes in driving, or Hybrid car issues:
   • Adjust the shutdown voltage setting in system settings to "COM" mode.
   • If the issue persists, adjust the shutdown delay setting to 300 seconds. The device will shut down 5 minutes after the car is turned off.
   • If still unresolved, switch to the GPS system for display. Within 5 seconds of powering on, select the GPS system.
8. Wrong operation leads to crashes:
   • Ensure no other OBD equipment (e.g., positioner, tire pressure monitor, ELM27) is connected to the OBD2 interface simultaneously.
   • Avoid modified or retrofitted systems (e.g., central control navigation, electronic throttle, fixed speed cruise) that might conflict.
   • Features like one-key start, keyless entry, or remote start might cause crashes. Unplug other OBD devices and use the product directly. Restore factory settings if necessary (refer to the setting table).
   • To access settings: Press and hold the scroll wheel to enter the setup menu. Right-click the scroll wheel to switch to system settings. Press the scroll wheel vertically to enter system settings. Right-click again to switch to factory settings, and press vertically to confirm.
   • If problems persist, switch to the GPS system. Turn on the power and turn the dial within 5 seconds to select the GPS system.

GPS System Troubleshooting

1. Screen without any display, and no power:
   • Start the car engine and check if the cable line is tight.
2. No car speed displayed:
   • After HUD power-on, the GPS will start searching for satellites. Drive the car on the road. It will function correctly once it acquires more than 5 satellite signals.
3. Cannot be turned on automatically or repeatedly extinguished during driving:
   • Change the sleep voltage setting to 13.0V or 12.8V.
4. Inaccurate time:
   • Enter the setting items: system time adjustment. Turn the dial to the right to adjust the time zone. After adjusting, press the dial vertically for 2 seconds to save and exit.
5. Inaccurate Speed:
   • First, check if the speed unit (KM/H or MPH) is correct. Refer to the settings to switch units.
   • Car manufacturers often calibrate dashboard speeds to be 5-7% higher than ECU readings. The international standard is based on satellite data. (Example: If the dashboard shows 100, and the device shows 105, change the default value to 102).
6. Driving direction display error:
   • The direction can be displayed normally once the vehicle speed exceeds 5 KM/H.
7. Speed is still displayed after the car stops:
   • This can occur due to unstable satellite drift in areas with obstructions like underground parking lots, tunnels, or underpasses. Drive to an open road. The display should normalize once more than 5 satellites are found.
8. Device cannot auto power off when the car is turned off:
   • If connected via OBD cable, it should auto power off in 3 minutes.
   • If it still does not power off after 5 minutes, change the sleep voltage setting to 13.5V.