E60 [E60] Battery Issues | ICV | DME Problem? (Help)

Hey guys well I have gotten myself into a pickle here.

My car has been giving me a Low Battery Charge Warning. I got a battery replacement and registered/reset the IBS histogramm with INPA. Car is still draining the battery.
I attempted to do a draw test and there was about 3-5amps being drawn. (Way too much)

I began pulling fuses, nothing helped except when I pulled the "Engine Management" fuse (DME.) I then decided to check the car for any water. Battery compartment was dry, MPM was dry, DME (under hood) was dry and connection was strong. I tested the relay for the DME, that looked fine because it clicks when I re-install it.

I am at a loss of ideas about what this could be. The car seems to go to sleep mode as the orange light near the shifter goes off about 20-30 minutes after the car is shutdown, but the green led for the window lock on the door panel, does NOT go off, not sure if that is how it's supposed to be.

A few nights ago, I heard a buzz noise from under the hood. I put my ear close to the grille and there was clicking and buzzing. After inspection, the DISA valve seems to be clicking at random time intervals and the Idle Control Air Valve (ICV) Is CONSTANTLY buzzing. That is whats draining my battery, it is on non stop. I took the ICV out and cleaned it, cleaned the throttle body, DISA too, and it made no change to the car. I am beginning to think this is bad DME? IBS cable? (I tried unplugging, did nothing) or some other kind of electrical/coding issue...

Could there have been an option within DIS or INPA that can cause this because I did mess around with those things.

I need some assistance, someone please chime in, any help at all will be much appreciated. Thank you guys!

(Car: 2005 E60 525i M54, Non Nav)

My experience is oriented around Fxx cars & using E-Sys to code them so I don't have concrete details for your scenario.

Running functional jobs available in INPA/DIS to reset units may need additional follow-up jobs for initialization/normalization.

It is definitely possible that writing coding changes to the car using any tool can trigger what you are describing. You have not mentioned it, but if using Tool32, need to be extra cautious.

Hopefully someone with more INPA experience on Exx cars came chime in.

Originally Posted by bymer321

Hey guys well I have gotten myself into a pickle here.

My car has been giving me a Low Battery Charge Warning. I got a battery replacement and registered/reset the IBS histogramm with INPA. Car is still draining the battery.
I attempted to do a draw test and there was about 3-5amps being drawn. (Way too much)

I began pulling fuses, nothing helped except when I pulled the "Engine Management" fuse (DME.) I then decided to check the car for any water. Battery compartment was dry, MPM was dry, DME (under hood) was dry and connection was strong. I tested the relay for the DME, that looked fine because it clicks when I re-install it.

I am at a loss of ideas about what this could be. The car seems to go to sleep mode as the orange light near the shifter goes off about 20-30 minutes after the car is shutdown, but the green led for the window lock on the door panel, does NOT go off, not sure if that is how it's supposed to be.

A few nights ago, I heard a buzz noise from under the hood. I put my ear close to the grille and there was clicking and buzzing. After inspection, the DISA valve seems to be clicking at random time intervals and the Idle Control Air Valve (ICV) Is CONSTANTLY buzzing. That is whats draining my battery, it is on non stop. I took the ICV out and cleaned it, cleaned the throttle body, DISA too, and it made no change to the car. I am beginning to think this is bad DME? IBS cable? (I tried unplugging, did nothing) or some other kind of electrical/coding issue...

Could there have been an option within DIS or INPA that can cause this because I did mess around with those things.

I need some assistance, someone please chime in, any help at all will be much appreciated. Thank you guys!

(Car: 2005 E60 525i M54, Non Nav)

For vehicles up to 9/05....

On E60 press the child safety lock switch, which turns
the LED on. Turn ignition off. Does the driver's switch
block LED go out after 2 minutes? (On E63/64 the
Controller will freewheel)
if not, Disconnect the 30G Relay from the
rear power distribution box. Wait at
least 2 minutes. Does the LED go
out or draw disappears?
if not Reinsert the 30G relay and
disconnect the MPM. Wait at least
2 minutes. Does the LED go out or
draw disappears?
if not Reinsert the MPM and disconnect
the Byteflight optical connector
from the SGM. Wait at least 2
minutes. Does the draw
disappear?
if not Reconnect the Byteflight
connector and remove PT_CAN_H
(Pin 32 BL/RT) and PT_CAN_L
(Pin 34 RT) from SGM connector
X13581 and reconnect to SGM.
Wait at least 2 minutes. Does the
LED go out or draw disappears
if not Reinstall the 2 PT_CAN wires back into SGM
connector and remove K-CAN_SL (Pin 36 GE) and
K_CAN_SH (Pin 35 SW) from SGM connector
X13581 and reconnect to SGM. Wait at least 2
minutes. Does the LED go out or draw disappears?
if not Isolate each K-CAN module by pulling the main power fuse or disconnecting the module. Wait at least 2 minutes
between each module. In order to isolate the CAS from the K_CAN, remove the K_CAN_SL (pin 26 GE) and
K_CAN_SH (Pin 35 SW) from CAS connector X10318. Always wait the appropriate amount of time when
disconnecting a module.

Hey guys so after 2 days of leaving my car at the dealer, they said it is possible that the SGM/SIM Airbag Gateway Module is bad. They want to replace it, and quoted me $1,900.. that is a lot of money for me so I am now looking to fix this on my own. I do not believe them because the SGM ecu does not seem to give me any kind of error. no Airbag light, no errors in DIS.

My problem is K-CAN communication. Seems there is a short, loose connection, or a bad ecu somewhere along this K-CAN. I do not have any experience working/understanding how this K-CAN works. Is there a way for me to check this K-CAN connection using a multimeter, what can I do? I do not have an oscilloscope to diagnose with, but do have a multimeter.

I also have a screen of the errors related to K-CAN: