A CM6 that turns off can be following its switch-off timer, while an abrupt loss during a drink needs separate power and door checks. Treat the display or symptom as a clue, not as proof that a pump, grinder or board must be replaced. Change one user-accessible condition at a time and let every shutdown finish. Programmed Switch off after may be short, or a loose plug, power interruption or incompletely closed service panel may end operation. An orderly rinse before shutdown suggests the timer; a black display without rinse during brewing suggests power or a fault. Review the Switch off after setting, seat the plug directly in a sound outlet, close all panels and run one short drink while observing the display. If it powers off abruptly again, unplug it and record when it happens for Miele service instead of cycling the power repeatedly.

Models covered

Safety first

  • Keep water out of the bean hopper, grinder and electrical openings. Never reach inside a running grinder or force a hot, pressurised component.

What the symptom may indicate

Exact meaningProgrammed Switch off after may be short, or a loose plug, power interruption or incompletely closed service panel may end operation.
What to distinguishAn orderly rinse before shutdown suggests the timer; a black display without rinse during brewing suggests power or a fault.

Checks in the right order

  1. Confirm the pattern

    Programmed Switch off after may be short, or a loose plug, power interruption or incompletely closed service panel may end operation.

  2. Prepare safely

    Finish the automatic shutdown, unplug the machine and let hot surfaces cool. Remove only the tank, tray, brew group or cleaning accessory named by the manufacturer.

  3. Apply the official check

    Review the Switch off after setting, seat the plug directly in a sound outlet, close all panels and run one short drink while observing the display.

  4. Retest once

    If it powers off abruptly again, unplug it and record when it happens for Miele service instead of cycling the power repeatedly.

Stop and get qualified help when

  • Stop for a harsh grinder noise, repeated electrical error, uncontrolled leak, burning smell or a symptom that returns after the one official retest.

Next step

Repair, replace a part, or arrange a diagnosis?

Use the checks and stop conditions above to choose a cautious next step. A symptom alone never proves that the appliance has failed.

Resolve it without buying anything

Complete the 4 user-accessible checks in order. If normal operation returns and no warning sign remains, no replacement is indicated.

Replace only the confirmed part

If the checks isolate a worn or blocked component, match its complete reference to the exact appliance model before ordering.

This guide does not identify a replacement part. Do not order a generic component from the symptom alone.

Arrange a diagnosis before replacing the appliance

Stop at any warning sign listed above. A qualified diagnosis should confirm that repair is unsafe, unavailable or uneconomical before an appliance replacement is considered.

Sources used

  • Miele — Miele's official material documents “Miele CM6 switches off unexpectedly” and the user checks retained here.

Last checked: 30 August 2026