Garaged fridge freezer problem?

I apologise for putting this in as an answer when in fact it should be a question.
my Bosch fridge freezer has stopped working. I keep it in the garage so I'm assuming that it's due to the garage temperature dropping, although in the last few days the temperature has risen ti ahbove freezing. I've brought it into the house, will this kick start it into working again or do I need to get the hair dryer out as I've had to do with my pipes