Had this happen to me a while ago and it's a simple fix... Pretty sure it'll be your bonnet sensor has broken which is located just underneath the bonnet latch.
When it goes you'll find your alarm going off every 5 or 10 minutes and you lose your wipers at low speeds as it thinks the bonnet is open and so disables them to prevent damage
![happy2 :happy2:](https://www.mk5golfgti.co.uk/forum/Smileys/newsmileys/happy2.gif)
Until you manage to get it booked in to be fixed you can unplug the sensor under the bonnet.... if you trace a black wire from the latch to the left next to the headlight you'll see a black plug with a wire running off into the car, unplug this and you should get your wipers back and the alarm should set properly.
I didnt have a bonnet warning light come up on mine so guessing you've got a newer car than me or maybe highline dash?
hope this helps
Dave