Fuse box Opel/Vauxhall Astra J - fusesdiagram Fuse box in engine compartment Astra J. fuse box location. to access the fuses press the two latches and remove the unit cover . fuse box diagram. legend. R1 . R2. Load area Opel/Vauxhall Astra J. To access the fuses located in the trunk, turn it 90 ° to lock the Fuse Box Diagram > Opel/Vauxhall Astra J (2009-2018) The fuse box is located in the front left of the engine compartment Disengage the cover and fold it upwards until it stops. Remove the cover vertically upwards.