Philips Sonicare HX9111 Flexcare Electric Toothbrush

After three months of normal use, bristles exhibit fatigue and brush heads are less effective at removing plaque. Please click here to see replacement brush heads available at Argos.

Yes, Sonicare toothbrushes are safe to use on braces but the brush heads will wear out sooner. Sonicare toothbrushes are also safe on dental restorations such as fillings, crowns and veneers.

Place the handle in the charger and charge for 24 hours before turning it back on. If the handle still does not hold a charge, click here to register your product for inspection or contact our Customer Service.

Reset it to factory conditions. To reset the handle to default settings, follow the below procedure: 

• Place your handle on your charger that is plugged in to a live outlet 
• Hold the Power button, the Up sensitivity button (+), and the Mode button for 2 seconds 
• If successful there will be 3 beeps and the green battery light will flash Once reset the handle will have EasyStart feature disabled. The Quadpacer feature and Sensor pressure will be enabled.

Please click here for the Philips troubleshooting tool. If you are unable to find a solution to your problem, we will guide you in booking a repair or exchange of your product in one of the Philips Authorised Service Centers.

Your battery light on the handle will flash yellow when it begins to run low. You will also hear 3 beeps along with the yellow flashing light to indicate the battery is running low. Your handle will continue to turn on with a low battery, however it will not turn on once the charge is depleted. If you start to notice these signals we recommend that you place the handle on the charger to charge.

You can adjust the sensitivity level at any time. To adjust the sensitivity level press the "+" or "-" symbol on the sensitivity level button. You can do this before you turn the handle on or after you turn the handle on.

If you are unable to resolve the issue, then please either call us using the phone number on this page OR click HERE to arrange a return or exchange.

Yes, it is generally safe to leave it on charge all the time. Most modern electric toothbrushes are designed in a way to prevent overcharging. Once the battery is full, the toothbrush simply stops drawing power, meaning it won’t damage the battery or overheat.