After changing the battery in my imobiliser key fob, it now only shows a blue light. I have tried to follow the workshop manual but get lost. When we bought the van, the handover warned us not to experiment with the device that connects to the two pin thingy, sticking out of the dash which looks as if it is a reset solution. I do not wish to lose the security locks my van keys give. Checking other people here in the search area, I am not alone but did not find a sollution. Any help appreciated.