Lots of codes after replacing fuses, car won’t start

[mwhitely5]

Hi all, new Z4 owner here, 2005 3.0i. Car has run all week with no issues. I was working in the cabin today on a couple of electrical bits - just replaced 2 fuses and tried to get my phone paired to the Bluetooth. Went to start the car after I was done and it wouldn’t crank whatsoever. My scanner picked up the below codes which have never shown up before.

P16A3
P1632
281D
2746
2869
2796

I’m thinking I just left the cabin electronics on too long while I was working and killed the battery? I had it in and out of accessory mode quite a bit while I was working. It measured 9.5V when I checked it with my meter

 

[BumpyZ4]

Bad battery!

 

[2k35is]

Get it on a Ctek type harger about #15 in Ald orLodl -only problem is only usually on sale iin winter months when most needed. Not only gd at charging battery up but claim to somehow to be able to bring old batteries back to life. Hopefully should start it.

 

[iamnotme]

Get it on a Ctek type harger about #15 in Ald orLodl -only problem is only usually on sale iin winter months when most needed. Not only gd at charging battery up but claim to somehow to be able to bring old batteries back to life. Hopefully should start it.

I've used CTEK for about 15 years. They are still going and the recondition mode does work, but it has it's limits. It pulses the battery to de sulphate the plates from what I seem to remember.

 

[mwhitely5]

Thanks for the replies everybody. After taking the battery out, I learned it was over 6 years old and figured it was going to need a new one soon anyways.

First time firing it up with the new battery and it idled wonky but after shutting it off and starting up again, she’s been running fine for 2 days. Appreciate the help everybody! Now if only I could figure out the initial issue of why the steering wheel buttons and horn still don’t work after changing all the fuses…