brush-head Troubleshooting

Brush head worn on the Philips Sonicare 4100

Source: Philips support — appliance troubleshooting Confidence: 80% Verified Aug 9, 2026

The brush head is worn and needs replacing.

How to fix Brush head worn

Replace the brush head

Replace the brush head with a genuine one.

Source: Philips support — appliance troubleshooting Confidence: 80% Verified Aug 9, 2026
Difficulty: ★ Est. 2 min

Parts needed: Philips Sonicare 4100 Soft Brush Head, Philips HX3681 Brush Head

Reset the indicator

Reset the brush head replacement indicator.

Source: Philips support — appliance troubleshooting Confidence: 80% Verified Aug 9, 2026
Difficulty: ★ Est. 1 min

Replacement parts for the Philips Sonicare 4100

Philips Sonicare 4100 Soft Brush Head Philips Sonicare 4100 Charging Base Philips HX3681 Brush Head Philips HX3681 Replacement Battery Philips HX3681 Travel Case Philips HX3681 Charger

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