a4 battery drain HK mmi 3g

[atomiczen]

I have an audi a4 2010 that drain battery every 3 days
there's 1amp drain with car off. I hear that hdd into mmi spin and stop every 4-5 seconds
i read reloading the MMI update software package would correct battery drain/sleep mode settings
this is vcds diag

Address 5F: Information Electr. Labels: 4E0-035-6xx-5F.clb
Control Module Part Number: 8T1 035 666 K HW: 8T1 035 666 E
Component and/or Version: H-BN-EU H52 0167
Software Coding: 01010001000681ED19000F1E000000030000
Work Shop Code: WSC 06325 123 12345
VCID: 428BFF0FDD8FD8965D-8016
1 Fault Found:


02445 - Disk Drive Initialization Error
000 - -
Freeze Frame:
Fault Status: 01100000
Fault Priority: 5
Fault Frequency: 1
Reset counter: 219
Mileage: 123410 km
Time Indication: 0
Date: 2011.06.27
Time: 00:19:32


Freeze Frame:
Voltage: 12.10 V
ON Time: 6755 h

[rafal]

is it all ok with optical bus?
if yes - you will need swap mmi for other
also you can try change relay in amplifier

[atomiczen]

is it all ok with optical bus?
if yes - you will need swap mmi for other
also you can try change relay in amplifier
how can test optical bus? i have to check fault on gateway?
how can swap mmi? which tool needed?

i have read that firmware upgrade can solve issue. could be an idea?

[rafal]

https://www.ross-tech.com/vcds/tour/optical-bus.php

[atomiczen]

i have optical in error, what's meaning? what i have to do?

[rafal]

find broken - repair
edited:
optical bus is working in '' ring '' between each other

[atomiczen]

i have disconnected optical from mmi 3g high and i still ear that mmi goes on and off continuosly

[atomiczen]

i have disconnected optical from mmi 3g high and i still ear that mmi goes on and off continuosly

it's difficult to code another used same numbers mmi 3g?

[rafal]

i have disconnected optical from mmi 3g high and i still ear that mmi goes on and off continuosly

how you think? is not same as broken optical bus?

[atomiczen]

how you think? is not same as broken optical bus?
sorry i try to write better
after optical diag made with vcds i have made a test. I have disconnected optical fibre from rear MMI unit. This unit without fibre plugged in made same issue, on-off continuosly
so i think that on off command don't goes through optical bus, but it's a fault into MMI unit
now my question is, could be possible to fix only with fw upgrade?

[atomiczen]

there's someone can identify this resistor?
I think R120 but i'm not sure

[rafal]

did you broke or you finded broken?

[atomiczen]

did you broke or you finded broken?
finded broken, with cd reader in this condition

[rafal]

about resistor - difficult to say..............
mount r120 and you will see