Genuine Volvo V40 Relay Boxes

Volvo V40 Relay Boxes Parts and Q&A

• Relay Box
  30870947
  Q: Where can you find Fuse Box and Relay Boxes, and how can they be accessed and tested on Volvo V40?

  A:

  Fuses are in the fusebox behind the bottom cover on the driver's side of the facia panel and more fuses are in the fuse/relay box in the left rear of the engine compartment. Accessing the fusebox requires removing the cover clipping from the drivers side lower facia panel and engine compartment fuses require a retaining clip to be released to remove the cover from the fuse/relay box. The cover gives a listing of circuits protected by each of the fuses. To remove a fuse, turn off the relevant circuit or ignition then using the fuse removal tool attached to the cover pull the fuse out, a blown fuse will have a broken or melted wire. Always replace a fuse with one of the same rating as the fuse on it - the rating is also color coded for easy identification. If there is an immediate fuse blow, investigate the cause, which is likely to be due to faulty insulation, and isolate the defect by testing each circuit. Spare fuses of every rating should be kept in the car. Relays are mostly found behind the driver's side facia lower panel, upper half of the fusebox and a separate holder next to it with the exceptions of the window wiper relay and driver's side window automatic relay. Accessing relays inside the car behind the facia requires the removal of retaining screws and disconnection of the wiring connector from the footlight, whereas those in the engine compartment can be accessed by removing the cover from the fuse/relay box. To test a relay, try to operate the system; a functioning relay will click when energized which will indicate the fault is somewhere else if it does not. Replacing a relay is done by ensuring that the ignition is off then removing the old relay and pushing in the new one, since relays are designed to be push-fit into their holders.