Driver Side Switch Module LIN Communication Malfunction [09/2013 - ]: Description

The outer mirror switch monitors the LIN communication bus between the components related to the switches on the driver side seat.

HINT: 

DTC U1127, U1128 and U1129 are output simultaneously when: 1) there is an open or short in the LIN communication bus between the switches on the driver side seat, and 2) their LIN communication bus stops.