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So, used my fogs yest for first time. Nsr stopped working. Checked bulb...ok! I cant image it has its own fuse. All other lights working. No water ingress.

Have you got a bulb out warning?

Yep

If possible, try taking the fog lamp unit that's working from the o/s and plugging it into the n/s to see if it works, or even swap both to find out if it's the unit or a wiring fault.

Thats a good idea. On it

Hmmm so upon further investigation, there ISNT and NSR fog...its the reversing bulb. So why the hell would it throw up a fault? ALL bulbs are working fine and the fault has cleared itself. Im not complaining...it’ll take that as a result...just a tad confused

Could be a faulty connector / wiring somewhere. A right pain to diagnose if it's intermittent.

Mike