not-turning-on Troubleshooting

Toothbrush won't turn on on the Oral-B Pro 3 3500

Source: YouTube — repair & troubleshooting videos Confidence: 60% Verified Aug 9, 2026

The electric toothbrush does not turn on, often due to a dead battery.

How to fix Toothbrush won't turn on

Charge the toothbrush

Place the toothbrush on the charger and allow it to charge.

Source: YouTube — repair & troubleshooting videos Confidence: 60% Verified Aug 9, 2026

Difficulty: ★ Est. 2 hours

Parts needed: Oral-B Pro33500 Charger

Replace the battery

Replace the battery if it no longer holds a charge.

Source: YouTube — repair & troubleshooting videos Confidence: 60% Verified Aug 9, 2026

Difficulty: ★★ Est. 20 min

Parts needed: Oral-B Pro33500 Replacement Battery

Replacement parts for the Oral-B Pro 3 3500

Oral-B Pro 3 3500 Soft Brush Head Oral-B Pro 3 3500 Charging Base Oral-B Pro33500 Brush Head Oral-B Pro33500 Replacement Battery Oral-B Pro33500 Travel Case Oral-B Pro33500 Charger

← All Oral-B Pro 3 3500 error codes

As an Amazon Associate we earn from qualifying purchases. Prices and availability are accurate as of the time shown and may change. We research product data independently.