Sprinter 3500 V6-3.0L DSL Turbo VIN 45 (2007)
Main Relay (Computer/Fuel System): Locations
Engine Control Relay is located in the Fuse/Relay Block # 1 also as known as SRB.
Fuse/Relay Block # 1 (SRB) is located beneath the driver side end of the instrument panel in the passenger compartment.
