Technical Ducato X250 turn signals stay on after a bad jump start

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Technical Ducato X250 turn signals stay on after a bad jump start

Vladas

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Hi,

I've got a 2007 x250 Ducato self-converted campervan.
Van has got a house battery connected through a split-charge relay, both house and starter batteries share the chassis ground.
The fault happened after trying to jump start the vehicle.

The LH and RH turn indicators (wing and back) stay on all the time, even with the key out and the vehicle locked. The side indicators in the front light cluster don't work at all.
Rear fog light stays on too. Checked the bulbs, all seem ok.
Pushing the indicator switch or pressing the hazard button, I can hear the sped-up relay clicking sound, but it has no effect on the turn signals. Since the indicator relays on this model are soldered on the body computer module, no easy way to disconnect them. Checked them for continuity with the board out, seem to be ok.

I slow charged the house battery and apart from the indicators, the van works just fine.
I keep the starter battery disconnected when stationary so that it doesn't get drained.
Tried fully disconnecting the house battery and solar panels, that doesn't help either.

Any input would be much appreciated.
Thanks,

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