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Home >> Volvo >> 2008 >> V50 Base, 2.4 38 >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Miscellaneous Electrical - Design And Function - 4 Of 4 >> Trailer Module (TRM) (2005-11) >> Downloading Software And Replacing The Control Module
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Downloading Software And Replacing The Control Module

A new trailer module (TRM) is not preprogrammed. New software must always be downloaded.

New software can be downloaded into previously installed control modules.

When downloading new software a P/N must be entered. This must be done to obtain the correct software and full operation of the control module. The P/N corresponds to the type of socket used on the cable harness for the tow hitch.