Having problems after replacing a new battery.
 

Mine did the same thing after a battery swap. Everything "reset" after a few minutes of running. Give it a few minutes of idling and it should be ok.

Like most of us, I saw the lights, but they cleared after
a turn key/pause/boot up re-start...I heard no noises.

I can't think of any underhood noise induced by a batt. swap.

I would rec'd putting your newly installed batt on a slow trickle
charge tonight to bring it fully, but slowly up to full charge.
GL,
mD

Don't forget the "steering wheel over both ways trick"

It a selftest feature after the computer lost it power. It needs to reset itself by turn the steering all the way to left and right before drive and after the engine started up.

Thank you to all. It makes sense now. It was really strange to experience and it is working good now. I didn't turn the steering all the way to left and right. Should I disconect battery and do it or it will be ok now? thanks again.

FYI... you must not completely disconnect the X5 from battery power. When changing the battery a booster battery should be hooked up under the hood. Removing the battery without doing so is the same as unplugging your computer to turn it off.

I don't think that is necessary to have a booster connect under the hood. As long as when tighten the POSITIVE side of the terminal don't let the wrench touch any metal (most part of the body of the vehicle is ground). When there were a shortage or sparks, then you have more problems later on. Could be battery drain with no reasons, fuse burn out, computer goes nuts. etc.....