look to purchase a new Bosch 0 227 100 124 ignition module.
(check for your exact model when you remove it from your car.
-its located on drivers side of engine compartment near inner side wall. Mine has been replaced twice and I need a new one again.
when it starts to fail, at anytime when driving at any speed, vehicle engine
just cuts off , you coast to a full stop , wait five minutes, restart vehicle . until
the part finally expires and the vehicle won't start at all. Mine has finally stopped.
good luck.