Allroad - Front Air suspension dropping on hard left or right turn

[simonw]

I recently had the passenger side front air strut replaced. The car now on a hard left or right turns drops the front suspension to the guards. I turn car off and back on and the suspension corrects itself and comes back to level however the yellow suspension light is on constantly - any clues as to why this is happening would be greatly appreciated. I have the sneaky suspicion that the drivers front strut may need replacing