New to X5M, help please.

[BimmerNewb79]

I bought a '15 F85 close to a month ago, I'm daily driving it. Dropped the wife off at work this morning get back home park it in the garage. Go back to it bout 20 mins later and all kinds of codes and won't start. I have a MHD wifi obd adapter and use it for monitoring and codes. I've got an optima/agm charger on it, putting in 12.1V and about 12 amps, but the battery voltage doesn't seem to be going up. I haven't found any blown fuses yet, but not sure I'm looking in all of the right spots.

Anyone have any leads to help me out?

Details:
38000 miles
KW V3
Unknown to me catless dp
Valvetronic exhaust
Unknown to me tune
XDelete (for 2wd)

Codes:
- DME active codes -
138104 - Exhaust flap, activation: Line disconnection.
1B5101 - Terminal 15_3, line from CAS, electrical: Short circuit to B+.

- DME shadow (inactive) codes -
1B2304 - EWS-DME message incorrect Timeout.
1FB101 - Check Control message (ID 229): Vehicle battery charge low!.

- DME #2 (slave) active codes -
1B5101 - Terminal 15_3, line from CAS, electrical: Short circuit to B+.

- DME #2 (slave) shadow (inactive) codes -
140011 - Misfire: Fuel injection deactivation.

- Transmission active codes -
None

- Misc. information -
4/25/2022
MHD version 3.81
Voltage 12.1 V
Last flashed file : Unknown
VIN: 5YMKT6C59F0C89263
Factory software:
HWEL 184F v003_019_005
BTLD 1242 v003_089_001
SWFF 10CA v089_110_001
SWFF 2495 v089_110_136

Current software:
HWEL 184F v003_019_005
BTLD 1242 v003_089_001
SWFF 10CA v089_110_001
SWFF 2495 v089_110_136
CAFD 0B0A v000_042_003
Current PRG (hex): 10CA596E01
ECU build date: 2015.03.04

ECU status: -

- Readiness -
Misfire: Complete.
Fuel System: Complete.
Components: Complete.
Catalyst: INCOMPLETE.
Heated Catalyst: Not avail.
Evaporative System: Complete.
Secondary Air System: Not avail.
A/C Refrigerant: Not avail.
Oxygen Sensor: INCOMPLETE.
Oxygen Sensor Heater: Complete.
EGR System: Complete.

Flash counter: 2

[9vapors]

When the battery is dead, or close to it, all sorts of things like this happen… I'd start with the battery. Do you have the soft close doors? Are they working? When the battery is losing charge it will start to prioritize things, one of the first to go is the soft close doors…

1B5101 - Terminal 15_3, line from CAS, electrical: Short circuit to B+.

Ive also seen folks had to change out the cables to the battery, possibly need that based on the code.

[BimmerNewb79]

Originally Posted by 9vapors

When the battery is dead, or close to it, all sorts of things like this happen… I'd start with the battery. Do you have the soft close doors? Are they working? When the battery is losing charge it will start to prioritize things, one of the first to go is the soft close doors…

1B5101 - Terminal 15_3, line from CAS, electrical: Short circuit to B+.

Ive also seen folks had to change out the cables to the battery, possibly need that based on the code.

Soft close still working on and off the charger.

[9vapors]

Originally Posted by BimmerNewb79

Soft close still working on and off the charger.

Wouldn't think it's the battery then…

[9vapors]

You mentioned having downpipes etc, I just did this this weekend and found with some things after it was all done… the grounds from the DME weren't connected, and contact with the DME was not working. Can you check to make sure one of those grounds aren't damaged or something there? They are on a bolt at the base of the plastic wire holder that crosses over your turbos. Would be on the left side of it, at the rear bolt location…

[BimmerNewb79]

Originally Posted by 9vapors

You mentioned having downpipes etc, I just did this this weekend and found with some things after it was all done… the grounds from the DME weren't connected, and contact with the DME was not working. Can you check to make sure one of those grounds aren't damaged or something there? They are on a bolt at the base of the plastic wire holder that crosses over your turbos. Would be on the left side of it, at the rear bolt location…

Confirmed the bolt is tight and there are 2 terminals on that bolt.

[BimmerNewb79]

Disconnected both batteries. Aux battery measures 12.8v, main battery measure 12.6v.
No date found in the main battery.
Video added

[BimmerNewb79]

New symptom. Car is now completely off, but main battery is metering 13.4v and aux is reading 12.9.

[M3jamaica]

I hope u solve it easy....just like u I'm about to buy a used x5M and I'm so scared of stuff like this, i have been hesitant for this reason.....

[musa]

Have you verified the batteries are fully charged and no loose or deteriorated connections? From my experience, all these symptoms are typical of low battery charge.

[BimmerNewb79]

Originally Posted by M3jamaica

I hope u solve it easy....just like u I'm about to buy a used x5M and I'm so scared of stuff like this, i have been hesitant for this reason.....

I've worked on my own GM trucks for years, and know them pretty well, but wanted something different with performance. I'm capable to work on it, just don't know anything bout them really. The price tag doesn't help with getting into a new platform.

[BimmerNewb79]

Originally Posted by musa

Have you verified the batteries are fully charged and no loose or deteriorated connections? From my experience, all these symptoms are typical of low battery charge.

Which connections would you suggest?

[9vapors]

Battery connections in the trunk, red cables and brown on the secondary…

[BimmerNewb79]

Originally Posted by 9vapors

Battery connections in the trunk, red cables and brown on the secondary…

Got car to power up back to the original problem. Ground on the main battery didn't make a good connection when I put it back on. Main battery at 13.9v now, but can't connect to the dme with mhd obd wifi adapter. 🤦

[BimmerNewb79]

Replaced main battery, load tested okay but, it was date codes 2015.

New discovery is the obd port doesn't have any power. Is there a fuse for that?

[9vapors]

Originally Posted by BimmerNewb79

Replaced main battery, load tested okay but, it was date codes 2015.

New discovery is the obd port doesn't have any power. Is there a fuse for that?

I think it's 11, 12, 18?

[BimmerNewb79]

I have confirmed that the obd works, and mhd says it is flashing the dme back to stock successively.

Radio/ idrive, hvac, headlights, front protection systems are all still throwing inop status. Car won't start either.

I ordered ista and an enet cable(should have tomorrow). Bimmercode won't connect currently.

[9vapors]

Originally Posted by BimmerNewb79

I have confirmed that the obd works, and mhd says it is flashing the dme back to stock successively.

Radio/ idrive, hvac, headlights, front protection systems are all still throwing inop status. Car won't start either.

I ordered ista and an enet cable(should have tomorrow). Bimmercode won't connect currently.

Geez dude, DME is screwed?

[BimmerNewb79]

Originally Posted by 9vapors

Geez dude, DME is screwed?

God I hope not.

[Cbozz]

Originally Posted by BimmerNewb79

God I hope not.

Bad battery

[9vapors]

Originally Posted by Cbozz

Bad battery

He replaced the main one…

[Chilled]

You mentioned that the charge was not taking. Where you charging via the engine compartment points, and how where you measuring that it was not charging?

If via engine, have you tried to replace the IBS cable?

*EDIT*,
BTW, you should be able to connect ista with the MHD adapter. That thing is just a wifi hotpsot. You may need to change a few of the settings.