This morning during the rain deluge, I drove my Zafira through a deepish puddle (about 8") when I came out the other side it iust died and won't start. I say wont start, there is nothing there, all the lights on the dash light up but nothing happens when I turn the key. This happened at 6am and the car was towed home by 8. My local mechanic has said it just needs time to dry out, is this right?