Dead battery. Replaced with new. Now won't start

[Clavurion]

Originally Posted by ubfan

It's true. Maybe not all E53s. But mine 2006 X5, when I went to Sears and replaced the battery, they could not start the car. For my car (again, maybe things changed in 2006), I needed to replace the same exact battery or else the EPU needs to be reprogrammed.

Sounds like they pulled your leg. There is nothing battery related coding on any E53.

[wpoll]

Originally Posted by Clavurion

Sounds like they pulled your leg. There is nothing battery related coding on any E53.

+1 - no E53 (of any year) has the computer bus used by BMWs IBS. Sadly, it seems that many E53 owners are told they need the battery to be coded when in fact there is zero coding required or possible.

If you have an issue after a battery change, it is something else....

[ubfan]

Originally Posted by wpoll

+1 - no E53 (of any year) has the computer bus used by BMWs IBS. Sadly, it seems that many E53 owners are told they need the battery to be coded when in fact there is zero coding required or possible.

If you have an issue after a battery change, it is something else....

This is interesting. If it is something else then someone explain to me why they couldn't get the car to start at Sears after replacing the battery with the Sears battery. The lights came on and everything, but the car would not start.

There is something there. I have no idea what, but I didn't imagine it.

[Clavurion]

Originally Posted by ubfan

This is interesting. If it is something else then someone explain to me why they couldn't get the car to start at Sears after replacing the battery with the Sears battery. The lights came on and everything, but the car would not start.

There is something there. I have no idea what, but I didn't imagine it.

Must have been something simple like drained battery (even if new) or poor terminal connection if you mean that the engine didn't crank with the new battery. If you mean that engine cranked normally but did not start it must have had lost EWS sync (caused by previous start with poor battery) which was rectified with diagnostics.