Car Won't Start: Drivetrain Error

[razorlab]

But our neutral lockout is under the car. Not under a little panel next to the shifter.

Ah interesting. Wish we had that. I wonder if we could retrofit.

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[Optimusprimerib]

Hi does unplugging the DME for a while “reset” it ?

 

[MYA90SUPRA]

Assuming your new battery is good and connections on battery are good I would start checking for loose power wires and grounds.

 

[Nehpets808]

Check the connections behind/inside the right wheel well trunk area for the distribution box fuse connections. Make sure all of these are securly fastened. Seems like there is a main line not giving voltage.

 

[Fuji808]

Main lines are secure in the trunk. Gonna check all the connections and fuses next.

 

[SunshineSupraMan]

Were any airbags set off ?

 

[Fuji808]

no airbags were deployed. waiting for ctek 4.3 test and charge. will retry jumping again with the new battery.

 

[Vt-mech]

no airbags were deployed. waiting for ctek 4.3 test and charge. will retry jumping again with the new battery.

This may be a dumb question but did you clear the codes after you adapted the new battery?

 

[Vt-mech]

This may be a dumb question but did you clear the codes after you adapted the new battery?

Or you just have a bad terminal connection

 

[Fuji808]

Hi does unplugging the DME for a while “reset” it ?

finally got the car to start.

I removed the JB4 and WMI.
disconnected the DME too.
the CTEK 4.3 did a reconditioning of the "new" battery.
voltage output was 12.85.
started the engine and it sputtered for a bit but it did not stall.
CTEK tested starter and alternator as OK.
initially black smoke from exhaust when revving up to 2K rpm.
after several minutes of idling, white smoke from exhaust when revving up to 2K rpm.

 

[Fuji808]

This may be a dumb question but did you clear the codes after you adapted the new battery?

now that I can finally start the car, I will be deleting old codes and run a new scan.

 

[Fuji808]

car starts up.
idle sounds a tad rough.
these are the latest error codes.

Error memory
Date: 9/29/24, 11:35 AM

12 Digital Motor Electronics
1 error
160504: Crankcase ventilation heating, control: line break
2C PMA
1 error
80334C: Multi-turn loss detected
40 Body Domain Controller
1 error
804246: Outside mirror left (LIN), heating or electric chrome: Defect
5D Camera-based driver assist system
3 errors
E0561B: 0xE0561B - signal error - 0x7530 - 0x0001 - BMW.CHASSIS - VehicleModel - signal invalid
E0561A: 0xE0561A - signal error - 0x7532 - 0x0001 - BMW.CHASSIS - SteeringAngle - signal invalid
E05614: 0xE05614 - signal error - 0x7531 - 0x0001 - BMW.CHASSIS - DrivingVector - signal invalid
60 Instrument panel
1
2 errors
E12C4D: DSC interface (lane slope, 0x163): signal invalid
E12C3B: DME DDE interface (status automatic engine start-stop, 0x30B): signal invalid

 

[Eastwood]

car starts up.
idle sounds a tad rough.
these are the latest error codes.

Error memory
Date: 9/29/24, 11:35 AM

12 Digital Motor Electronics
1 error
160504: Crankcase ventilation heating, control: line break
2C PMA
1 error
80334C: Multi-turn loss detected
40 Body Domain Controller
1 error
804246: Outside mirror left (LIN), heating or electric chrome: Defect
5D Camera-based driver assist system
3 errors
E0561B: 0xE0561B - signal error - 0x7530 - 0x0001 - BMW.CHASSIS - VehicleModel - signal invalid
E0561A: 0xE0561A - signal error - 0x7532 - 0x0001 - BMW.CHASSIS - SteeringAngle - signal invalid
E05614: 0xE05614 - signal error - 0x7531 - 0x0001 - BMW.CHASSIS - DrivingVector - signal invalid
60 Instrument panel
1
2 errors
E12C4D: DSC interface (lane slope, 0x163): signal invalid
E12C3B: DME DDE interface (status automatic engine start-stop, 0x30B): signal invalid

All this from basically a dead battery?

 

[exe36m3]

Not the battery.

So if this helps... my wife's 2021 X3...
2 weeks into ownership, the gauges all go wild, digital dash is dead. Car seems to run ok... then the next day, totally dead.

I run a CTEK and charge it overnight, car starts next AM, take it to BMW.

They replaced the battery, ran tests, it's all OK.

3 days later, gauges go bad again.
And you guessed it, dead battery.

I CTEK charge it overnight and drive the car back to BMW.

BUT this time, I tell them... check the KOMBI.
It's essentially the power-brain of the car that turns off power or turns on power to parts of the car.

Turns out, our Kombi was bad. It's power circuits stayed on even after the car was off.
They replaced. Car's been OK 3+ years.

Not saying this is you, but you've done the easy stuff.

 

[MrNobody]

I'm thinking power drain attributed to proximity of key fob.

Do you lock the door every night?

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