How to Replace the Key Fob Battery in a Volvo V70

1. Slide the spring loaded catch to the side.
2. Pull the key blade straight out of the remote key.
3. Insert a small screwdriver in the hole behind the catch and carefully pry up the cover.
4. Use a screwdriver to pry out the old battery.
5. Insert a new battery with the (+) side downward.
6. Press the cover back into place.
7. Slide the key blade into its groove and press gently until it clicks.

• Battery type is CR 2430, 3 V; the PCC uses two batteries, separated by a plastic spacer.
• Hold the remote with the buttons upward when removing the cover so the batteries do not fall out.
• Replace the battery when Replace car key battery appears in the display or the locks do not react after several attempts.

Source: 2010 Volvo V70 owner's manual, PDF pages 54, 58. 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.