[k-4]

I would think its an ecu problem with the display going
But have a look here for a box ,cheapest I've seen and 100% feedback
http://www.ebay.co.uk/itm/350576538...X:IT&_trksid=p3984.m1423.l2649#ht_4119wt_1046

 

[k-4]

Or this is what controls the gear change and these are just up the road
http://www.ebay.co.uk/itm/VW-Transp...CarParts_SM&hash=item4abafe37c0#ht_1550wt_922