leagend TG4 is a comprehensive diagnostic and performance tool for your vehicle. It functions as a scan tool, compatible with all OBD II/EOBD compliant vehicles, allowing you to read and clear trouble codes, view freeze-frame data, and turn off the Check Engine Light.
leagend TG4 also offers real-time engine monitoring with digital gauges, tracking parameters such as fuel system status, engine temperature, intake air pressure, and more. It features a trip computer that displays essential metrics like MPG, miles to empty, and fuel economy. Additionally, its built-in car black box records key data like maximum speed, driving time, and distance.
ALL-IN-ONE SCAN TOOL
It will also work as a scan tool to help you troubleshoot problems of all OBD II/EOBD compliant vehicles.
1. Works with all OBD II compliant vehicles;
2. Reads & clears trouble codes;
3. Easily determines the cause of the "Check Engine Light ( MIL)";
4. Turns off Check Engine Light, and resets;

Car Black Box
It will save up to 300 hours of your driving data, works as a vehicle black box to store every trip.
1. Time and date for each trip;
2. Distance traveled each trip;
3. Maximum speed during trip;
4. Time over speed;
5. Number of times of extreme acceleration during trip;
6. Number of times of extreme deceleration during trip;
7. Numbers of hard accelerations and braking;
8. Average speed;
9. Average fuel consumption;
Digital gauges
It will measure and monitor up to four sets of information for real-time engine performance.
1. Fuel system status;
2. Vehicle speed;
3. Engine coolant temperature;
4. Fuel rail pressure;
5. lntake manifold absolute pressure;
6. Engine speed;
7. Calculated load value;
8. Ignition Timing;
9. Intake air temperature;
10. Absolute throttle position;
11. Battery Voltage;
12. Short term fuel trim;
13. Oxygen sensor output voltage;
14. Air flow rate;
15. Commanded secondary air status;
Trip Computer
It will display such useful information as average trip MPG(miles per gallon), tank MPG, average speed per trip, average speed per tank of gas, miles to empty, miles driven on tank, and more.
1. Maximum Speed;
2. Average Speed;
3. Driving Time;
4. Driving Distance;
5. Fuel Used;
6. Trip Fuel Economy;
7. Distance to Empty;
8. Time to Empty;
9. Fuel to Empty;
10. Engine power;
SPECIFICATIONS
Inquiry & Sample Request
Faqs
2. We respect our customers and are fully willing to grow together with them to achieve a win-win situation.
2.Small-batch trial orders are supported.
1. The customer provides the required drawings/detailed parameters.
2. The project is confirmed to be feasible.
3. A contract is signed with the customer and a deposit is paid.
4. Follow up on the customer's needs and make samples.
5. The customer tests and confirms the samples.
6. Mass production begins.
2.During the warranty period, we provide free repair and free firmware software updates.
2.If the defective rate exceeds the acceptable range based on the sampling inspection ratio, the factory shall re-produce the goods.
2.On-site factory visits require an appointment 7 working days in advance. We will arrange a dedicated person to receive you and provide a full tour of the production workshop, quality inspection process, warehousing and logistics. Video factory visits can be booked at any time and support bilingual explanations in Chinese and English.
2.Standard quotes are valid for 30 days, while quotes for customized products are valid for 15 days.