Hi Ron. I would suspect that a headlight level sensor on the suspension has probably given up the ghost. Is your Z4 an E89 and what model/year of 335 do you have ? Do they share same/similar parts ?
Si
I have a BMW insured warranty with a £250 excess so it’s not all bad news.
The 335 is 2015 and the z4 is 2016 and I’m unsure what interchangeable parts they share.
I was out in the car tonight and the system now only dips the main beam - prior to the ! Warning main beam would swish to one side or make a “hole” in the beam pattern.
The car went into have this sorted today and I've had a call to say it is a module in the LH headlamp unit.
Of course they don't stock a lot of spares in this day and age so it will now be ready tomorrow .
I don't know what the invoice will show but fortunately the BMW insured warranty will cover it
New module installed but they tell me that they can’t get the module to communicate.
They are supplying me with a 2 series tomorrow as BMW Tech are now involved,
Nothing is simple :thumbsdown: