# Glossary | Term | Definition | Info | | --------------------- | -------------------------------------- | ---------------------------------------------------------------------------------------------------------------- | | EPS | Electric Power Steering | Assists steering | | HCA | Heading Control Assist | Commands sent to EPS over CAN BUS | | LKAS | Lane Keep Assist | Keeps your car in the lane by way of Openpilot or a factory installed system | | ODIS | Offboard Diagnostic Information System | Volkswagens official diagnostic tool | | VCP | VAG Can Pro | Aftermarket diagnostic tool, capable of flashing firmware | | VCDS | VAG-COM Diagnostic Software | Aftermarket diagnostic tool | | VAG | Volkswagen AG | Automaker (VW, Audi, Skoda, Seat & more) | | J533 Harness | Harness for Panda | Allows you to tap all the required CAN BUS messages from between the Body Control Module and the CAN BUS Gateway | | BCM | Body Control Module | This module controls many functions in your car | | J533 / Canbus Gateway | CAN BUS Gateway | This module connects all the car's CAN bus networks in a central location and forwards messages between | | Poor people cars | ​ | A term used by fully loaded MQB elitists to oppress the glorious PQ25 owners. | --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://wiki.retropilot.org/index/vehicles/volkswagen-pq25-platform-retrofits/glossary.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.