2009 leon wont start

May 14, 2019
1
0
Hi all, my friend has a 2009 seat leon, it's a diesel one not sure of the exact engine will ask him tomorrow, anyway, sometimes when he goes to start it it turns over for a second and then just stops and beeps at him and all the lights on the dash come on, then the next day it might start no problem, hes had it at the local garage and they didn't know what was wrong and told him to take it to the dealer, they thought it was an ecu problem, is there anything he can try before taking it to the main dealer? Thanks