Most commonly used to eliminate battery drain issues in Pre-2009 model Volkswagen cars when upgrading the radio to a later model such as the RNS510, RCD330, RCD340 etc.
These Canbus Gateway Modules are NOT plug and play, They require coding with VCDS software using a VAG-COM cable.
HW: 7N0 907 530AJ
Installation instructions: https://www.my-gti.com/2296/can-bus-gateway-removing-installing-and-upgrading-volkswagen-golf
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