Bmw 2009 520d 177ps n47 manual

[pinda]

The cars has two problems

The first one is that at random moments a check engine pops up and i either lose power and have almost no throttle response or when the check engine pops up the car rpms jump by like 1K-2k, also happens while shifting and leting of the clutch.

The second problem is with the lights

I have xenon lights on it on random instace either the left or right headlight stops working and pops up the lights warning and service lights
On day light or position lights its not happening only while the short of long lights are on.

Any help is appreciated thanks