t5.1 highline electric sliding door not always closing

[heyasam]

My wife just told me today that the electric sliding door is sometimes only closing halfway then reopening. Haven't had a chance to research or examine it, and apologies if this is a repeat posting, but can anyone point me in direction to sort this one out? Is it common just dirty rails or something like this?

[Umai Naa!!]

Rub your hand up and down the seal on the body at the front edge of the door opening, and see how you go.

It's got a contact strip in it, for anti-pinch protection. They always play up after a while.

[heyasam]

Many thanks, the door seems to be behaving itself again lately though is this warning a total fail is immenent leaving us stranded?