Here is Manual Ignition mod for FS 2015.
Mod version: v 4.0.

Main Features:

– Adds manual ignition to all motor vehicles.
– Pre heating of the enginge before it could be started.
– HUD dissapears after about 5seconds later.
– Automatic installation to all motorized vehicles
– Could conflict with other manual ignition scripts

Credits:

Script: Xentro
Graphic: Katsuo / Xentro
conversion to fs 2015 Wis_Tex