AMROOLOO P21 Car Head Up Display Instructions
- June 14, 2024
- AMROOLOO
Table of Contents
Multi-functions trip computer P21
Instructions
(This product has been registered for multi-national appearance patents and
display screen copyrights)
Thank you for purchasing our product. This product reads the driving data of
the car through the OBD2 interface of the car ECU, such as vehicle speed,
rotation speed, fuel consumption, water temperature and voltage, etc.,
Instantly read driving information under the condition that drivers’ view does
not shift during the driving of the car. To keep the drivers’ eyes on road
always to avoid the dangerous of lowering down head.
This product does not rewrite any data in the ECU.
Special Notes
Button and jack functions:
- Left atmosphere light: Change with RPM and vehicle (under setting)
- Power switch: Long press for 2 seconds to turn off, and again to turn on
- “ ” Button: Short press to switch the function on the left, but calibration in slope meter graphic and menu options.
- “ ” Button: Short press to switch the function on the right, and menu options.
- “M” Button: Short press (1 second) to switch the graphic, and 2s hold to save your settings.
- Right atmosphere light: Change with RPM and vehicle (under setting)
- Suction cup holder: Used for hanging glass view
- Sensitive components: Automatically adjust the brightness according to the surrounding environment
- OBD cable interface
- Alternate interface
- Chassis bracket
Slope meter calibration
Short press“ ”or “ ”button: Setting done if there is di di di
Abbreviations:
ECT= Engine coolant temperature| VLT= Voltage| FUE= Fuel
consumption
---|---|---
RPM= Rotation per mile| TIM= Time/Clock| MIN= Driving minutes
DIS= Driving distance| MAP= Manifold air pressure| OIT= Oil
temperature
A/F= Air-fuel ratio| TCP= Turbo pressure| PSI= Turbo pressure
unit
RTC= Satellite time| ASL= Altitude| DIR= Driving direction
TPS= Throttle position| KM/L= Kilometers per liter| IAT= Intake
air temperature
CVT=Continuous variable transmission| ELD= Engine load| GPS=
Satellite numbers
Setting Mode
Long press the “M” button for 2 seconds to enter the setting item, short press “ ” to select the menu, short press the “M” button to confirm, after adjustment, long press the “M” for 2 seconds to save and exit
Language Set: CN=Simplified Chinese/ TW=Traditional Chinese/ EN=English
and other languages
Sound Switch: ON=Turn on the alarm/ OFF=Turn off the alarm
Speed Alarm: Alarm when the vehicle speed >150km/h, the setting range is
5-200 km/h
Coolant Alarm: Alarm when the water temperature >120°C, the setting range
is 50-200
RPM Alarm: Alarm when the engine speed >6000r/min, the setting range is
1000-8000
BAT alarm: Alarm when the voltage <10.5v, the setting range is 10.0-15.0v
Speed Adjust: Adjust the parameter value when there is an error between
the speed and the instrument panel (for example, the instrument displays 100
Km/h and the device displays 105Km/h, and the parameter value is adjusted to
102 on the dial)
Speed Offset: When the vehicle speed does not return to 0 after the car
is turned off (If the vehicle speed shows 5Km/h, the equipment is adjusted to
6Km/h)
BAT Adjust: When there is an error between the voltage and the instrument
panel voltage, fine adjustment can be made (If the device displays 0.2V higher
than the instrument voltage, the device is adjusted to 98%)
Engine Size: When the fuel consumption error is large, adjust according
to the displacement (If the car displacement is 3.6L, adjust the parameter
value to 3.6L)
Fuel Adjust: Fine-tuning when there is an error in fuel consumption (If
the device displays 0.2L higher than the instrument voltage, the device is
adjusted to 98%)
Brightness：
Auto= Automatic light sensitivity, 1= The darkest, 8 =The brightest
Atmosphere: RPM = Speed control color-changing atmosphere light SPEED=
Car speed control color-changing atmosphere light
OFF= Turn off the atmosphere light BLUE= Blue atmosphere light RED= Red
atmosphere light PURPLE=Purple atmosphere light
CWT Unit： °C =Celsius °F =Fahrenheit
Speed Unit : Km/h= Kilometers MPH= Miles
Sum Distance: Synchronization of total mileage (For example, the total
odometer on the dashboard shows that you have driven 30010km, adjust the
parameter value to 30010km)
Power Off Time: The default is 10 seconds to shut down, the adjustment
range is 5-300 seconds
Sleep Voltage: Adjust to 13.2V or 13.6 when unable to shut down, adjust
to COM mode for cars that start and stop automatically
Time Adjust : It can be adjusted to local time, the default time is China
time (GMT+8)
Factory Set: The system restores to the factory preset values. After
selecting this operation, short press “M” Button to confirm
Performance Testing
Acceleration test: 100km acceleration refers to the acceleration time
from 0 to 100km/h, which is a power test of the car
Brake test: The time and distance used after the brake is stopped
completely when the vehicle speed exceeds 100km/h is the performance test of
the brake
Troubleshooting settings
Scan fault code: Scan whether the car is faulty and display faulty code
Clear fault code: When the car has a faulty code display, short press “M”
button to clear it Read data stream: Display all data in the car engine
Please note:
Please disconnect it if you don’t drive for more than a week. Since the OBD
device is a battery of a regular battery with 1 month standby current, it is
recommended to unplug it when the car is not been used for a long time due to
different vehicle conditions.
OBD FAQ：
-
The screen without any display, and no power
Check whether the OBD cable is tight connection, pull down repeatedly to confirm, please try it on another car if still not workable, analysis if it is a cause from OBD diagnostic interface, if yes, please repair it and connect the device again. -
Only the car voltage displays and be automatic power off after 30 second
(1) This product is only available for OBDII and EOBD cars when it is in OBD2 mode.
(2) Year of car production (Suitable for cars produced after 2008).
(3)This product OBD2 mode does not support OBD I and JOBD.
(4) Switch to the GPS system using the USB cable to display, within 5 seconds of power short press the “ ”button to select the GPS system. -
There is an error between the vehicle speed and the dashboard display
Please check whether the unit is correct. Kilometer KM/mile MPH (reference setting item for speed unit switching)
The speed unit is correct when the power is turned on: long press the “M” button for 2 seconds to enter the system setting, short press the“ ”button to select the speed error adjustment for fine-tuning (For example, the meter displays 100 Km/h and the device displays 105 Km/h. Short press the“ ”button to adjust the parameter value to 102). -
There is an error in fuel consumption
Check the displacement of your vehicle. Set the engine displacement to the same displacement in the system settings (for example, if the car is 2.0L, the parameter value is adjusted to 2.0L). If the displacement is the same, you can also fine-tune the fuel consumption data in the system settings (such as equipment When the display voltage is higher than the instrument voltage is 0.2L, the equipment is adjusted to 98%) Suggestion: Since this data is the data of the trip computer, no fine adjustment is required. -
Cannot shut down
After the car is turned off, the machine has a speed display and cannot be turned off. Select the shutdown voltage setting in the system settings and adjust it to 13.2V or 13.6V, and the car will automatically shut down after 3 minutes of turning off. -
Step on the brakes and wait for the traffic light to turn off the machine and automatically start and stop the car.
Adjust the shutdown voltage setting in the system settings to COM mode -
It goes out while driving, the engine goes out, the hybrid car.
1. Adjust the shutdown voltage setting in the system settings to COM mode
2.If it is not resolved, adjust the shutdown delay setting in the system settings to 300 seconds, and the car will shut down 5 minutes after the flame is turned off.
3. If it is not resolved, please switch to the GPS system to display, short press the “ ”button within 5 seconds of power-on to select the GPS system -
Wrong operation leads to crash.
Whether the OBD2 interface uses other OBD devices (locator, tire pressure monitoring, drop lock lift window folding ELM27).
Modified and installed (central control navigation, electronic throttle accelerator, cruise control, brushed computer system ，One-key startup keyless entry, remote startup) will cause crashes, unplug other OBD devices and use this product directly to restore factory settings (see the setting table for details).
Long press the “M” button to enter the setting menu, short press the “ ”button in the system setting menu to select restore factory settings, short press the “ M ”button to confirm. If it is not resolved, please switch to the GPS system for display, and short press the “ ”button for 5 seconds to select the GPS system.
Inclinometer calibration
After the meter is placed, short press the“ ” or“ ” button: when you hear a
drop, the calibration is complete
GPS Display FAQ：
-
Nothing on the screen, no power
Check whether the OBD cable is tightly connected, pull it out and plug it in several times, or plug USB cable into cigarette smoker. -
No speed
The GPS is flashing to search for stars. Please move the car to an open road. GPS display above 5 means it can be used normally only after searching 5 satellites. -
Can not automatically turn on or turn off repeatedly during driving
If you use OBD cable, enter the setting menu to select the “Sleep Voltage” and adjust the parameter value voltage to 13.0V or 12.8V. -
Inaccurate satellite time
Enter the setting item: Time Adjust, press“ ”button to adjust the time zone time, after adjustment, long press ”M“ button to save and exit. -
Inaccurate vehicle speed
(1) Check whether the unit is correct, kilometers KM/mile MPH (speed unit switch please refer to the settings mode “speed unit”).
(2) When the car leaves the factory, the manufacturer increases the speed displayed on the dashboard by 5-7%. International standards are based on satellite data.
(3)Fine-tune the vehicle speed, such as the instrument display 100 Km/h HUD display 105Km/h dial on the dial to adjust the parameter value to 102. -
Wrong driving direction
Satellites can not read your driving direction when there is no speed. It will be normal until >5KM/H. -
Speed is still on after the car stops
Underground parking lots, tunnels, and overpasses, when there are obstructions, the signal will be unstable. Satellites will drift. Please drive to an open road. If the number of satellites found is more than 5, it will be normal. -
After the car is turned off, it will not automatically shut down
When the OBD cable is connected, the machine will automatically shut down after 3 minutes If the machine has not shut down after 5 minutes after stopping the flame, adjust the parameter value of the shutdown voltage setting of the setting item to 13.5V.