I was dumb and let the battery voltage drop too low. but not too low to start the car. So when i let go of the clutch a bit too quickly and it did the restart the battery warning light came on. And no headlights. It started, the battery light went off, but headlights would not turn on. And later noticed no rear lights either. High beams would not work when this started, but worked later.

So only lights i have at the monents are brakelights when pressing the brake, DRLs and blinkers. I put in a spare rotary light switch i had laying around, but this was not the issue.

I checked with VCDS, and this showed up. https://wiki.ross-tech.com/wiki/index.php/00907#00907_-_Intervention_Load_Management

So i did what it said. No generator issue (checked it with a battery tester), battery voltage while running seemed fine (maybe a bit lower than normal, but 14.5-146v instead of 14.7 is not a big difference (i was stressed and didnt check not running).

I Let the car sit parked and locked for an hour, maybe two and started it again. No new fault codes but still no lights this is when the high beams worked again.

Now ive disconnected the battery and plugged in a charger.

If this doesnt work what may the issue be? A broken relay? Faulty BCU? Any input appreciated.

FIXED,

Turned out to be a blown 5A fuse. Did not make note of which one. But changed it and things sorted. Assuming its a fuse on a signal line.

So now ive learnt to check the fuses before panicking about other possible causes xD

Edited 9 November, 20259 Nov by Ebbie