Launch X431 Perform ECU Coding for VW Models

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ECU code is a trigger data of in-vehicle unit. Each control unit has a relevant code, and the same model has different configures and codes. For example, the codes for two airbags are different form that for four airbags when installing. If you programme the code of two airbags installed to the control unit of four airbags, the two airbags may not be triggered.

When need to code control unit? After installing control unit, “Control Unit Code” may be stored in ECU, but you should perform coding operation again. If you don’t do that, vehicle running malfunctions may be present, such as accelerating fault, in-gear malfunction, and engine rough running. Malfunction indicator is off when these occur. You can not check trouble codes through a scanner. Please check if ECU code is error. Trouble code will cause: bleeding value high and shifting impact, enlarging A/T load,the implausible trouble codes are stored in malfunction memorizer.

 

More Launch X431 Test Case check here:How to use Launch X431

 

Operation on coding ECU:

1.Select systems, e.g. ABS?AT?SRS.

2.Enter

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