V-checker OBD bluetooth HUD H501

Eletric parameter
Input voltage	8-6V DC
Working current	≤2mA
Standby current	15mA
Wireless transmission range	with 10m open spaces
Dimensions	90mm*15mm
Weight	75kg
Operation Temperature	-30℃ - 85℃

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H501 User Manual
	English

Question: Which models can the HUD work on?

Answer: It can work on all models that meet OBD2 standard (all models produced after 2007 in China and after 1995 in

European meet OBD2 standard).

Question: When I use my HUD for the first time,why the HUD displays "000" after resetting the HUD?

Answer: It means that your car is not OBD standard and the HUD is not working on your car.

Question: Where is OBD car diagnostic interface ?

Answer: Normally,it is located between the steering wheel and Brake pedal,the location should be within the

driver’s reach .If you still can not find the diagnostic interface, please call the local 4S shop.

Question:What’s the procedure of Installation and removal of the HUD ?

Answer: installation steps:( pls install in serious accordance with the following steps to avoid damage of the

machine)

Step 1. Turn off the engine key.

Step 2. Connect the HUD and, OBD diagnostic cable properly.

Step 3. Put OBD diagnostic cable in the right way to ensure safe, reliable and attractive.

Step 4. Insert the OBD data line plug into the car OBD interface.

Step 5. Switch HUD ON .

Step 6. Start the engine to scan

Removal steps: Turn off the ignition key, then pull out the OBD plug on the diagnostic cable

Question: Why the HUD is working well on one car but stop working when switch to another car ? How to do "restore factory

settings"?

Answer: When the HUD is working on one car for the first time, it needs to scan and pair with the car by locking the model’s

communication protocol to ensure the car. If you use change, it needs to do "restore factory settings", and another

repair with the other car.The steps of "restore factory settings" :

Step 1: Turn off the HUD .

Step 2: Hold down the OK button, and turn on the HUD at the same time.

Step 3: When the right top area of the HUD shows "0", the lower left area of the HUD shows "0",

restore factory setting completes.

Question: Why is the HUD always remind coolant temperature alarm? How to set the temperature alarm function?

Answer: The default setting value of coolant temperature alarm of automobile engine on HUD is 100 ℃,the value is for

ordinary cryogenic engine, but for a heat engine or turbo charging models (Such as: Cruze, Smart models), the

normal operating temperature will exceed 100 ℃, So the coolant temperature alarm value is recommended to

raise to 110 ℃ .Operation steps are as follows: Start the car, after the HUD is normally work, toggle the button

to the system setting interface,press the OK button to enter the setup menu.

Question: How to calibrate it if the instant fuel consumption value is inaccurate ?

Answer:Pls manually calibrate the instantaneous fuel consumption coefficient if the instant fuelconsumption is inaccurate

the default coefficient is: 331. Users can calibrate it as per the vehicle situation . Calibrating steps are as follows:

Start the car, after the HUD is normally work, toggle the button to the system setting interface,press the OK button

to enter the setup menu.

Easy setting: Different output volume have different instant fuel consumption coefficient, you have to set theresponding

instant fuel consumption coefficient, the system default 1.6L emission instant fuel consumption coefficient331. When

driving, if find the instant fuel consumption is inaccurate, the usercan set instant fuel consumption coefficient by

themselves. Please choose the right car with right output volume. Below is the instant fuel consumption coefficient

for different output volume (only for gasoline car):

Output volume: under 0.9 Instant fuel consumption coefficient:167

Output volume: 1.00-1.09, Instant fuel consumption coefficient: 208

Output volume: 1.10-1.19, Instant fuel consumption coefficient: 229

Output volume: 1.20-1.29, Instant fuel consumption coefficient: 250

Output volume: 1.30-1.39, Instant fuel consumption coefficient: 270

Output volume: 1.40-1.49, Instant fuel consumption coefficient: 291

Output volume: 1.50-1.59, Instant fuel consumption coefficient: 312

Output volume: 1.60-1.79, Instant fuel consumption coefficient: 331

Output volume: 1.80-1.99, Instant fuel consumption coefficient: 350

Output volume: 2.00-2.39, Instant fuel consumption coefficient: 372

Output volume: 2.40-2.69, Instant fuel consumption coefficient: 395

Output volume: 2.70-2.99, Instant fuel consumption coefficient: 455

Question: when using the HUD, why the indicator lights on the dashboard are abnormally lighted (such as: airbag light, ABS

light, electronic clock slows down)?

Answer: Because the HUD supports many communication protocols, while each car is generally supports only one

communication protocol, and the diagnostic interface on the car is not strictly defined in accordance with OBD

standard, so it would lead to this situation. According to the communication protocol of the car,deal with the HUD’s

OBD connector mental pins as follows: [Communication mode: ISO15765, retain metal pins 4,5,6,14,16], [

Communication mode: ISO14230 KWP2000, retain metal pins 4,5,7,16], [communication mode: ISO9141-2, retain

metal pins 4,5,7,16], other metal pins can be cut off.

The first number is: 1 (protocols: ISO9141-2), 2 (Protocol: ISO15765), 3 (Protocol: ISO14230KWP2000), the second

number indicates the sub-protocols number of the protocol, such as "1 - 1" indicates that it currently scans to a first

communication protocol of ISO9141-2

Question: When using the HUD, why sometimes the engine misfire?

Answer: HUD is default smart shutdown mode (when the vehicle speed and rotate speed are both 0,15 seconds later the

HUD automatically shutdown), restart the car after HUD shut down .

Question: How to detect and clear vehicle fault codes ?

Answer: After the vehicle starts and HUD automatically boots, the system will automatically clear the vehicle fault, then

detected the vehicle fault, if the fault of the vehicle is sporadic or temporary failure, the system will automatically

clear them,if it is permanent fault ,then it must be resolved through the maintenance. HUD ‘s buzzer and screen

will flash to do fault alarms, and toggle up and down button to read the fault code information.HUD will automatically

detect fault every 30 minutes.

Question: If the vehicle is not used for a long time, will the HUD lead to large battery power consumption?

Answer: Generally speaking, HUD's power consumption is very low and does not affect the vehicle's battery power, we

recommend to turn off the HUD if the vehicle is not used for a long time .

Question: why the HUD is still not shut down 5 minutes after the vehicle flamed out? Usually how long will the HUD shut down?

Answer: Generally, HUD will automatically shut down after 30 seconds when the vehicle flamed out. But the specific

shutdown mtime is determined by the electronic control system shutdown time of different vehicles , some

vehicle electronic control system shutdown time is long ,it takes about five minutes or so, so the owner can

safely leave after closing Ignition key,HUD will automatically shutdown.

Question: Will the HUD display normally in summer when the temperature inside the car is too high ?

Answer: The HUD working temperature: -40 ℃ to 85 ℃, it can work normally both in summer and winter .

Question: Why is the speed displayed on the HUD is lower than the car dashboard displays ?

Answer: For traffic safety ,automobile factory have the original car odometer speed 5% higher than the actual speed , which is

why some people has not been photographed speeding when he drives at 130Km / h on the highway, in fact, the real

speed is 120Km / h at this time. Pls refer to below automobile factorymandatory standards of original car odometer

speed setting .

For more details, please refer to the People's Republic of China National Standard car speedometer sheet GB15082-1999