You'd have a better response if you look on the vw T4 T5 forum
It responds to the door latch mechanism. If you trigger the latch the light buzzer, door lights e.t.c all respond.
dirty sensor
how to adjust headlight beam on vw t4
I think its in the same place as the T4 - behind the hazard warning switch on the dash.
The tank capacity of a T4 VW Transporter is 70 Liters.
Where is the fuse box on a t4 van
At the side of the water pump
LIGHTS ON reminder (buzzer)
hi i have a t4 vr6 with same probs if u find a remedy please post
Try asking on the forums at www.t4club.co.uk very helpful friendly free commity for worldwide VW T4 owners
Find the leak and fix it.