Renolink is a Renault/Dacia-specific OBD programming tool primarily used for UCH (central multiplex unit) pairing, airbag reset, and immobiliser programming. It also supports ECU flashing on select Renault platforms, making it useful for workshops that specialize in Renault and Dacia vehicles.
Renolink connects via OBD and uses Renault's proprietary diagnostic protocols. While its primary function is body electronics rather than performance tuning, it can be used to write calibration files on supported ECUs — particularly older Siemens and Delphi diesel units — after they have been read by a dedicated tuning tool.
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