My Captiva Diesel 2007 has a problem going on a distant journey. During short or town drives, it is fine.
When it turns to be a long journey, the car turns off after a while.
My mechanic tried a number of electrical fixes, but the problem persists.
He then decided to install a new ECU so he bought a new ECU FULL SET and installed. After installation, when he turns the key, the key/padlock light which is supposed to go off stays and blinks. When he presses the breaks during idling, there's a vibration.
When he puts the old ECU on these signs stop.