Limited transmussion

[farhanali525]

Hoping soneone can help. I have an issie with my 2012 S Max titanium wherein the car drives great however when on the motorway and its heavy rain i get a limited trasmission error along with engine malfunction message and the car woth wiggly lines (sorry name escapes me at mo) light comes up on the dash.the car goes into idle mode and drops speed and starts to shake and shudder. Eventually if the rain stops or i manage to switch my engine of for a while everything goes back to normal. Frustrating to say the least cos i cant get any logged error codes. Anyone got any ideas what this could be and a suggested fix?