What Does CL Mean on a Siemens Washing Machine?

Siemens Updated 8 April 2026
Quick Fix

Press and hold the Start button for five seconds until the CL indicator disappears from the display, restoring full control of the machine (takes about 1 minute).

Fault description

If your Siemens washing machine is displaying CL on its screen, there is no need to worry — this is not a fault or error code. CL stands for Child Lock, a built-in safety feature designed to prevent accidental changes to a running programme or unintended operation by children. The machine is working perfectly; it is simply in a protected mode.

When the child lock is active, the control panel becomes unresponsive. You may press buttons and find that nothing happens, or the display simply flashes CL in response. The machine will not start a new cycle, and any programme selections you attempt will be ignored until the lock is deactivated.

This indicator can appear unexpectedly if a button combination is accidentally pressed — for example, while wiping down the control panel or if a child has been playing near the machine. Deactivating it takes only a few seconds once you know how.

Causes

  • Child lock accidentally activated — The most common reason CL appears is that the child lock was triggered unintentionally, often while cleaning the control panel or brushing against the buttons. Many Siemens models activate the child lock when the Start button is held down for several seconds.
  • Child or household member pressed and held the Start button — Young children or other household members may have held the Start button down long enough to engage the lock without realising it. This is particularly common on models where the child lock has no dedicated button and shares a function with Start.
  • Panel cleaning triggered the lock — Wiping the control panel with a cloth while the machine is on can inadvertently hold a button down for the required activation time. This is a frequent cause of the CL indicator appearing without any deliberate action.
  • Power interruption during a cycle — In some cases, a brief power cut or voltage fluctuation while the machine is running can cause the control board to restore a previously saved state that included the child lock being active. This is less common but worth considering if the lock appears after a power outage.
  • Sticky or stiff button holding contact — A button that is sticking slightly due to detergent residue or wear may maintain contact long enough to trigger the child lock function. If CL reappears shortly after you deactivate it, inspect the Start button for any stiffness or residue build-up.

Step-by-Step Fix

  1. 1

    Confirm the CL indicator is displayed

    Look at the display panel and confirm you can see the letters CL. On some Siemens models it may appear as a small padlock icon alongside the letters. Make sure the machine is powered on before attempting to deactivate the lock.

  2. 2

    Press and hold the Start button for five seconds

    Locate the Start/Pause button on your control panel and press and hold it firmly for approximately five seconds. Keep steady, even pressure throughout — releasing too early will not deactivate the lock. You should hear a short beep and see the CL indicator disappear from the display.

  3. 3

    Check your model's manual if the above does not work

    On a small number of Siemens models, the child lock is deactivated using a different button combination — for example, holding two specific buttons simultaneously. Check the label on the inside of the door or the programme dial for a padlock symbol, which will indicate which button or combination to use.

  4. 4

    Try a power cycle if the lock will not clear

    If holding the Start button has no effect, switch the machine off at the mains socket and leave it unpowered for two minutes. Turn it back on and attempt the button hold again. A brief power reset can sometimes clear a frozen control panel state that is preventing the lock from responding.

  5. 5

    Clean the Start button if CL keeps returning

    If the child lock deactivates but reappears within a short time, the Start button may be sticking. With the machine switched off at the mains, use a slightly damp cloth to clean around the button, removing any detergent residue or debris. Press the button several times to check it moves freely and springs back properly.

  6. 6

    Test the machine with a short cycle

    Once CL has cleared, select a short programme such as a quick wash and press Start to confirm the machine responds normally. If the cycle begins without the CL indicator returning, the issue is fully resolved. If CL reappears during or after the cycle, proceed to the next step.

  7. 7

    Note whether CL returns repeatedly and contact support

    If the child lock activates again on its own without anyone pressing the Start button, this may point to a fault with the control board or a button that is registering a false press. Keep a note of how often it occurs and under what conditions, as this information will be useful for a service technician.

Affected models

When to call a service technician

In the vast majority of cases, CL is resolved in seconds by holding the Start button. However, if the child lock reactivates repeatedly on its own — particularly without anyone touching the machine — this can indicate a fault with the main control board or a button that is sending a continuous signal. These are not issues a homeowner can safely diagnose or repair without specialist tools.

You should also contact a service technician if the control panel becomes completely unresponsive even after the CL indicator has cleared, or if the display shows CL alongside other unusual symbols or codes. A technician can test the control board and individual button contacts to identify whether a component replacement is needed.

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Frequently Asked Questions

Is CL a serious fault on my Siemens washing machine?

No, CL is not a fault at all. It simply means the child lock feature has been switched on, either deliberately or by accident. Your machine is in perfect working order and will function normally as soon as the lock is deactivated.

Why does my Siemens washing machine keep showing CL on its own?

If CL appears repeatedly without anyone deliberately activating it, the most likely cause is a Start button that is sticking or registering a false press due to residue build-up or wear. Clean around the button first. If the problem continues, the control board may need to be inspected by a service technician.

Can I still use my washing machine while CL is displayed?

No. While the child lock is active, the control panel is disabled and the machine will not respond to button presses or programme selections. You need to deactivate the lock first by holding the Start button for five seconds before you can use the machine.

Does the child lock turn off automatically after a while?

No, the child lock on Siemens washing machines does not deactivate automatically. It will remain active until you manually hold the Start button for five seconds to turn it off. Switching the machine off and on at the mains will not clear it on most models.

What if holding the Start button for five seconds does not remove the CL code?

First, try switching the machine off at the mains for two minutes and then attempt the button hold again after powering back on. If that still does not work, check your model's manual or the inside of the door for an alternative button combination specific to your model. If nothing clears it, a service technician can investigate whether the control board is at fault.