Volvo S40 (2004-2012) < Fuse Box diagram Fuse box diagram (location and assignment of electrical fuses) for Volvo S40 (2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012). 2008 Volvo S40 Fuse box in the engine compartment . The fuse box in the engine compartment has positions for 36 fuses. Fuses 1-18 are relays/circuit breakers and should only be removed or replaced by an authorized Volvo service technician. Fuses 19-36 may be changed at any time when necessary.