Hi all, 
   I just went to start my 2007 1.9 tdi roomster and the rev counter went round to max rev then I noticed the indicators and speedo wasn't working aswell and my garage cant look at it till next week so has anyone got any ideas what could be the problem..... and it just a had a new front bumper and driver wing after a little bang a couple of weeks ago

I took the car to a different garage and they plugged her in  and no codes came up 

Hard to say, my instrument cluster has no faults showing yet the fuel gauge only drops two bars then sticks, only found that out after she cut out on me. vcds scan later showed less fuel than I'd put in. possibly a component fried somewhere.

If the garage has disconnected your battery and reconnected it the wrong way when doing work / jump started it wrongly it can cause spike damage which can fry an ecu and damage instrument clusters.

Might be an idea to have your dash checked for dodgy solder joints and at worst case scenario a change of instrument cluster.