preheating

Okay... I may be thick but..... I want to pre-heat my car before setting off to work in the mornings. Now I have 2 sets of keys so I thought I'd start the car, put fans on etc lock it while I get my stuff together. However it won't lock remotely, so if I turn off the internal sensor and lock...

Evening all Driving home from work just and the preheating system warning light has been flashing. Will phone the dealer in the morning to get it booked in. Problem is I do a 100 mile round trip to work each day is this a big problem and I shouldn't be using the car until it's fixed ...