Citroën Dispatch Dip Beam Failure

[Donquixote]

Hi, I have a 2014 Citroën Dispatch whose dip beam headlamps suddenly failed last night. The side lights and main beam still work, just not the dip beam - on both sides of the car simultaneously. I've searched the handbook to locate the headlamp fuse but it's not listed in the book. Help! What could have caused this?

TIA, DonQ

[bhg481]

It could well be a problem with the dip-switch ie, it's switching from main beam to nothing rather than to dip beam. It's a long time since I messed about with vehicle electrics but I have a feeling that headlamps aren't fused nowadays, they switch to an emergency mode to save you from going into total blackness.

[douglas9401]

The headlights are fused separately by side, unfortunately there are a few variants of fusebox location and layout.

Might be simplest to get a tester and check them all, starting with the one behind the glovebox.

No chance you hit a pothole or whatever and both bulbs burst with the shock?

[Hymie]

It’s likely that the dipped lights are operated via a relay – therefore while checking the fuses, check that the relays are fully seated (pushed home) in their sockets.

[Donquixote]

Thank you for these! There are three separate fuse locations on this van, unfortunately the fuses boxes are a little messy as it's been fitted with a refrigeration unit and extra wiring is present. I can't see any obvious fuse issues so I'll investigate the dip-switch theory. I have a pretty decent diagnostics machine which hasn't thrown up any issues. I've checked the bulbs too and they don't appear to be blown.