AZIJYV P21
AZIJYV P21 OBD2 Gauge Display User Manual
Model: P21
Mærke: AZIJYV
1. Introduktion
The AZIJYV P21 is a multi-functional dual-system car head-up display designed to provide essential vehicle and driving data directly on its screen, minimizing the need for drivers to look away from the road. It supports both OBD (On-Board Diagnostics) and GPS modes, offering comprehensive monitoring capabilities. This manual provides detailed instructions for installation, operation, and maintenance of your P21 device.

Figure 1.1: AZIJYV P21 OBD2 Gauge Display

Figure 1.2: P21 Dual System Overview
2. Hvad er der i æsken
Når du åbner pakken, skal du kontrollere, at alle følgende varer er inkluderet:
- P21 HUD-enhed
- Roterende sugekopbeslag
- OBD -kabel
- Skridsikker måtte
- Brugermanual

Figur 2.1: Pakkens indhold
3. Opsætning og installation
The P21 offers flexible installation options for optimal viewog tilgængelighed.
3.1. Valg af installationssted
You can install the P21 on the car's center console using the non-slip mat or on the windscreen using the suction cup bracket. The suction cup bracket allows for 360-degree rotation to adjust the viewvinkel.

Figure 3.1: Multiple Installation Ways

Figure 3.2: 360° Rotatable Bracket
3.2. Connecting the OBD Cable
The P21 connects to your vehicle's OBD interface. This port is typically located under the dashboard on the driver's side.
- Locate your vehicle's OBD2 port.
- Connect the provided OBD cable to the P21 unit and then to the vehicle's OBD2 port.
- Før kablet pænt for at undgå interferens med kørebetjeningen.
Video 3.1: P21 Heads Up Display Installation Guide. This video demonstrates the physical installation of the P21 device, including connecting the OBD cable and positioning the unit on the dashboard.
4. Betjeningsvejledning
4.1. Tænd/sluk
The P21 features automatic power on/off with your car's ignition. When the car starts, the device will power on; when the car is turned off, the device will power off.

Figure 4.1: Automatic Power On/Off
4.2. Knapfunktioner
The P21 unit has several buttons for navigation and settings:
- Power knap: Turns the device on/off manually (if auto-off is disabled).
- Forøg knap: Navigerer op i menuer eller øger værdier.
- Reducer knap: Navigerer ned i menuer eller mindsker værdier.
- Setting Button (M Button): Short press to switch display interfaces; long press to enter settings menu.

Figure 4.2: P21 Button Layout
4.3. Visningstilstande og -funktioner
The P21 supports two main modes: OBD and GPS. It features a 3.5-inch color LCD display with clear fonts and ambient lighting.
4.3.1. OBD Mode Functions
When connected via the OBD port, the P21 can display a wide range of vehicle data:
- Køretøjets hastighed
- Vandtemperatur
- Voltage
- Brændstofforbrug
- Speed Clock (RPM)
- Single Driving Time
- Driving Distance (Single/Cumulative)
- Indsugningstryk
- Olietemperatur
- Luft-brændstofforhold
- Turbinetryk
- Højde
- Kørselsretning
- Gasspjældsventil
- Intake Temperature
- Transmissionstemperatur
- Motorbelastning
- Up/Down Slope Angle
- Left/Right Tilt Angle
- Accelerationstest
- Bremse test
4.3.2. GPS Mode Functions
For vehicles not compatible with OBD or for general use, the GPS mode provides data via satellite signals:
- Køretøjets hastighed
- Voltage
- Satellittid
- Højde
- Antal satellitter
- Kørselsretning
- Enkelt kilometertal
- Køretid
- Up/Down Slope Angle
- Left/Right Tilt Angle
- Accelerationstest
- Bremse test

Figure 4.3: Function Display Icons

Figure 4.4: 11 Display Interfaces

Figure 4.5: Switching Display Interfaces
4.4. Tilpasning
- Hastighedsenhed: Switch between MPH and KM/H.
- Sprog: The HUD tachometer supports 12 languages.
- Omgivende lys: Choose between blue, red, and purple ambient lights.

Figure 4.6: 12 Languages Supported
4.5. Alarmfunktioner
The P21 includes multiple alarm functions to enhance driving safety:
- Alarm for overhastighed: Alerts when vehicle speed exceeds a set limit (50-200).
- Speed Alarm (RPM): Alerts when engine speed exceeds a set RPM (1000-8000).
- Vandtemperaturalarm: Alerts if water temperature exceeds 120°C (setting range 50-200).
- Voltage Alarm: Alerts if voltage drops below a set threshold (10.0-15.0V).
- Tilt Alarm: Alerts if the vehicle's tilt angle is excessive.
- Påmindelse om træthed i kørsel: Prompts for a break after extended driving.
- Fault Code Reminder: Notifies of detected engine fault codes.

Figure 4.7: Multiple Alarm Functions

Figure 4.8: Detailed Alarm Types
4.6. Slope Meter Function
The P21 integrates a slope meter that monitors the vehicle's driving angle, including up/down slope and left/right tilt, in real-time. This function is available in both OBD and GPS modes, providing crucial information for off-road or uneven terrain driving.

Figure 4.9: Electronic Slope Meter
4.7. Diagnostic Tool
The P21 features enhanced display and scanning functions for automotive diagnostics. It allows vehicle owners to quickly read and delete DTCs (engine trouble codes) and view real-time data streams. This can help identify why the check engine light is on and clear trouble codes, potentially saving trips to an auto repair shop.
5. Kompatibilitet
5.1. OBD System Compatibility
The OBD system is primarily applicable to gasoline vehicles manufactured after 2009 that support the OBD2 protocol and EU-OBD protocol. It is important to note the following limitations:
- gør ikke support JOBD and OBDI protocols.
- gør ikke support hybrid electric vehicles, diesel vehicles, pickup trucks, RVs, and computer modified vehicles.
- The following brands are generally ikke kompatibel with the OBD2 system: Renault, Peugeot, Citroen, Fiat, Jeep, Dodge, Jazz, RV, Hummer, etc.
If you intend to use OBD mode and are unsure about your car's compatibility, please confirm with the manufacturer before purchasing.
5.2. GPS System Compatibility
The GPS system is universally applicable to all vehicles, regardless of make, model, or year. If your vehicle is not compatible with the OBD system, you should switch to GPS mode for operation.
6. Vedligeholdelse
To ensure the longevity and optimal performance of your AZIJYV P21 HUD, follow these simple maintenance guidelines:
- Rensning: Brug en blød, tør klud til at rengøre skærmen og enhedens kabinet. Undgå at bruge slibende rengøringsmidler eller opløsningsmidler, der kan beskadige overfladen.
- Opbevaring: If the device will not be used for an extended period, disconnect it from the OBD port and store it in a cool, dry place away from direct sunlight and extreme temperatures.
- Kabelpleje: Ensure the OBD cable is not pinched or excessively bent, which could damage the internal wires.
- Temperatur: Avoid exposing the device to extreme hot or cold temperatures, as this can affect its electronic components.
7. Fejlfinding
Hvis du støder på problemer med din P21 HUD, bedes du se følgende almindelige problemer og løsninger:
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Enheden tænder ikke. | No power from OBD port; loose connection; vehicle not compatible with OBD mode. | Check OBD cable connection. Ensure vehicle ignition is on. If in OBD mode, try switching to GPS mode. Verify vehicle compatibility. |
| Ingen data vises i OBD-tilstand. | Vehicle not OBD2 compliant; faulty OBD port; incorrect mode selected. | Confirm your vehicle is OBD2 compliant (gasoline, post-2009). Try GPS mode. Consult a mechanic to check the vehicle's OBD port. |
| Inaccurate speed reading. | Calibration needed; GPS signal interference. | Access settings to calibrate speed. Ensure clear view af himlen til GPS-signal. |
| Skærmen er for svag/lys. | Brightness settings; photosensitive component blocked. | Adjust brightness in settings. Ensure the photosensitive component (on top of the unit) is not covered. |
| Enheden genstarter ofte. | Unstable power supply; software issue; compatibility problem. | Ensure stable OBD connection. Try switching to GPS mode if in OBD mode. If issues persist, contact customer support. |

Figure 7.1: Common Issues the P21 Helps Address
8. Specifikationer
| Feature | Detalje |
|---|---|
| Modelnummer | P21 |
| Produktdimensioner | 4.33 x 1.1 x 3.15 tommer (110 mm x 28 mm x 80 mm) |
| Varens vægt | 1.41 ounce (40 gram) |
| Display Type | 3.5-tommer farve-LCD |
| Forbindelse | OBD2, GPS, USB (for power/data) |
| Driftstilstande | OBD Mode, GPS Mode |
| Understøttede sprog | 12 sprog |
| Fabrikant | AZIJYV |
| Oprindelsesland | Kina |

Figure 8.1: Internal Chip Technology
9. Garanti og support
For warranty information and technical support, please refer to the contact details provided with your product packaging or visit the official AZIJYV webwebsted. Gem din købskvittering som købsbevis i tilfælde af garantikrav.
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