Power Mirrors: Overview Acura MDX II facelift

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Power Mirror Defogger Auto Operation Function

When the outside air temperature is 41°F (5°C) or below and the ignition switch is turned to ON (II), the left and right power mirror defoggers automatically turn on. The power mirror defogger auto operation function is controlled by the driver's MPCS unit.

1. When the driver's MPCS unit receives a signal that the outside air temperature is 41°F (5°C) or below from the climate control unit, the driver's MPCS unit automatically turns on the left and right power mirror defoggers within ten seconds after the ignition switch is turned to ON (II).
2. Power mirror defogger output automatically stops in ten minutes as a result of its timer.
3. If the driver's MPCS unit receives a rear window defogger/power mirror defogger switch input signal from the climate control unit during power mirror defogger output, the driver's MPCS unit shuts off the auto operation function immediately.
4. While the power mirror defogger auto operation function is operating, the rear window defogger does not automatically operate.
5. The power mirror defogger auto operation function stops temporarily, when any power windows operate during power mirror defogger output.

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1. Carefully pry the switch panel out from the dashboard.
2. Disconnect the 10P connector (A) from the power mirror switch (B).
3. Check for continuity between the terminals in each switch position according to the table.
4. If the continuity is not as specified, replace the power mirror switch.