Volvo C70 (2nd gen) key fob battery
5 of the 8 model years listed for the Volvo C70 (2nd gen) have a proven battery. The most common answer is CR2450. Rows below run oldest to newest; a year can appear twice when the car came with more than one kind of key.
- 2006-2007Key-head remote
CR2032
FCC ID KR55WK49250; KR55WK49259Owner's manual: manualowl.com and manualsdir.com (checked Nov 2, 2026)
Manual text: “the battery (type CR 2032, 3V) is weak”
Find CR2032 on Amazon - 2008-2009Key-head remote
CR2450
FCC ID KR55WK49250; KR55WK49259Owner's manual: manualowl.com (checked Nov 2, 2026)
Manual text: “the battery (type CR 2450, 3V) is weak”
Find CR2450 on Amazon - 2010Key-head remote
Not confirmed yet
- 2011Key-head remote
CR2450
FCC ID KR55WK49250; KR55WK49259Owner's manual: manualowl.com (checked Nov 2, 2026)
Manual text: “the battery (type CR 2450, 3V) is weak”
Find CR2450 on Amazon - 2012-2013Key-head remote
Not confirmed yet
Changing the battery
Key with remote in the head
- Here the key blade and remote are one piece. You open the plastic head, not the blade.
- Many key heads split along the side seam. Start at the small notch and pry a little at a time.
- The coin cell is usually under or on the back of a small board. Keep the rubber button pad in place while you swap the cell.
- Press the head together until it clicks and test the buttons. The transponder chip that lets the car start is separate from the battery, so starting should not change.
A CR2032 is 20 mm across and 3.2 mm thick. CR2032, CR2025 and CR2016 share the same width but not the same thickness, so a swap between them can leave a loose contact or a case that will not close.
A CR2450 is 24.5 mm across and 5.0 mm thick, much fatter than a CR2032. A thinner cell will rattle and lose contact, so buy the exact size.
If a child might have swallowed a coin cell, treat it as an emergency and get to a hospital right away.