What year model? They are 3 different ones.
Remove the valet key from the fob and behind it is a small Phillips screw. After that the fob will split and the battery is visible.
The battery in the key fob of a Volvo v70 is changed by opening the case with a penny or nickel. The battery can then be taken out and a new battery slid into position.
CR2450
You'll probably need to have this done at a dealership.
in the upper control module
Press lock then unlock five times on the key fob.
looking for any help. Not an actual Key , its a key fob that goes into the port in the dash
the key fob battery is the battey in a key fob torch
what is the reason for not fixing camera in key fob
New battery in the key fob may have lost it's memory if the battery has been out for a while - go to Volvo and pay megga bucks.
C200 key fob problem
By driving with the key fob in the ignition.