How to Replace the Key Fob Battery in a Volvo C70

1. Place the remote key with the keypad facing down and pry open the cover with a small slotted screwdriver.
2. Remove the cover.
3. Note how the + and – sides of the battery sit on the inside of the cover.
4. Pry out the old battery and insert the new one, without touching the battery or its contact surfaces with your fingers.
5. Press the cover back into place.

• Battery type is CR 2450, 3V.
• Avoid touching the electrical circuitry in the other half of the remote key.
• When the battery is weak, the Information symbol lights up and KEY BATTERY LOW VOLTAGE is shown in the information display.

Source: 2013 Volvo C70 owner's manual, PDF page 126. Steps are summarized in our own words (AI-assisted, checked against the cited pages 2026-10-18). Other model years can differ; your manual has the final word.