You need a degree for this to be honest the last one i done i was pressing a button on the radio if i remember rightly ,then it still didnt work as it had a fault in the speedo head which is a mini computer and in the end it was so expensive to change the owner bought a stick on clock .You have to go through the sequence then it comes up with something which i cannot remember then using a sub menu to locate the time and date ,cannot seem to remember if this was the one i had to push the radio button to change or was that another vehicle ,maybe a renault ? Sorry but iam losing my marbles in my old age and with so many makes and models of vehicles nowdays