2004 525I battery replacement

[big wave]

I'm planning to replace the battery in my 2004 525I because of slower and slower starting crank speeds. What is the best replacement battery? What are the reset proceedures? And where is the monster?

[witeshark]

Most likely, it's in a compartment in the back of the trunk opposite from the driver's side. IMO, use as close as possible to the OEM type of battery. Most good auto parts stores will have a very good match.

[big wave]

Thanks for the assist. Any info regarding any reset proceedures?

[witeshark]

I would think the most important one is your stereo code. AFAIK all others will really need a reset and be just fine.

[big wave]

Thanks its done. Used a little common sense. I hooked a battery to the jumper posts in the engine compartment. This made the car think it was still attached to the battery. I replaced the battery by only disconnecting cables at the posts. All is perfect now. No resets to deal with .

[witeshark]

Cool!

[Raymond Lee]

big Wave
That is what I used to think but I have been led to believe that I had to register the battery at dealer to make it work properly!

[the flying orange]

the car will need pairing with the battery any one with snap on or equiv diagnostic tool can do it just had mine done and cleared the 20 fault codes changing the batt brought up!