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Launch X431 PAD V Perform Engine ECU Long Coding Online Guide

Launch X431 PAD V is an automotive diagnostic tool that supports advanced coding and programming. Here will mainly show you how to use it to perform the Engine ECU LONG CODING online.

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Learn something about ECU CODING function.

Every automobile actuator has a record code in ECU, which is the basis for automobile computer to mobilize their work. X431 PAD V is equipped with advanced ECU coding function for addressing the following issues:
1.After you change the bad actuators or certain parts, you need to use this function to make a new code and recognize the new actuators.
2.By changing the code with the ECU coding, it’s easy to improve vehicle performance or stimulate high-end functions for the car.
3.ECU coding enables multiple car systems to recognize each other and then the actuators can start to work.

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Guide to do ECU coding online:
Car model: Audi A5 2014
From the Health Report of Audi V28.67 (newest version), you can see “P161200 Engine Control Module (ECM) -incorrect Coding” trouble code.

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Read ECU Memory and there is a Long Coding “00000000000000000000” can be found.
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Select Audi V28.67>> Menu>> Online Function>> Online Coding
It starts to download a file.
After that, select Single System Mode>> 01 Engine Control Module 1>> 1A2500322427010B2000 (Possible Code03)
Make sure the code is the one you want to modify

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The coding has been successfully carried out.
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Confirm to clear the fault code and read the fault code again

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Exit online programming
Back to Health Report, now there is no fault code anymore.
The fault memory has been cleared successfully, and the states of all systems are normal.

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Alright, that’s the guide to performing online coding for Engine ECU with Launch X431 PAD 5.

Besides, X431 PAD 5 also can perform 16 kinds of special functions. Here are some special functions that have been tested: Register new ECM VIN, reset electric throttle relearn, EPS, calibrate CVT oil pressure, detective ESP- C15DE-ROAD test active, and calibrate Steering Angle Sensor.

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