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Automotive glossary

Gateway Module

The gateway module connects the car's different networks and routes messages between them.

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What is Gateway Module?

It links CAN, LIN, FlexRay and Ethernet networks. It also connects the diagnostic port. Some act as a security gateway. When a control unit is replaced, the gateway may need to be updated with the car's installation list. Some brands require online authorisation to access protected functions.

How it works

It receives messages and forwards those needed on other networks.

Why it matters for your car

A gateway fault can cause many communication codes. Security gateways may block unauthorised tools.

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