Just in case its relevant I'll add the full story.

Other week my dash lit up with assorted errors on my 65 plate 2l 4x4 diesel.

I'm fixing her car so as the angry beeping and error messages arent going to be too much of an issue for her to drive a couple of miles a day into work she uses the Octi until I can get the wheels back on hers.

Couple of days later and after a little bit of digging I found that the NSR ABS sensor had died.

New one in and car is happy again for the few trips I'm doing at this point as I was on leave.

On Sunday I decide to pull the other 3 sensors, get the part numbers and then order them, on the logic if that one went the rest will be about due.

NSF - came out with a little persuasion and WHT number noted.

OSF - needed a little more persuasion and....Snap...Bugger!

Off to get the drill and get the stub out of the hub carrier.

Replacement ordered and a few short trips later Wednesday rolls round.

I'm due in at 1400 and Postie brings my package at 1250.

Wheel off.

Sensor in.

Wheel on.

Changed and I turn the key.

A lot of lights appear on the dash with a clearly struggling display telling me the battery is low and needs to be charged by driving.

The starter motor doesnt agree with this method and clicks a bit - Bugger.

The battery is 6 months old at the most, so I'm happy its been the short trips (possibly added load of all the warning lights have aided its discharge) and after a short 2 hour charge and jumper pack I get the car running with a clear dashboard.

Then I notice that the clock normally displayed in the head unit when its off, is absent and the radio wont come on.

Full charge overnight and a few commutes later the Columbus screen remains blank, with unresponsive buttons.

So have the various spikes and voltage drops blown something in the head unit?

Is it an easy fix (cheap may be the actual word I'm looking for)?

I did notice the display was paired down when I replaced the OEM battery and figured it was a normal power saving feature. Especially as everything came back with the new one.

Or am I looking at a replacement?

In which case which one, because basically all I want is Dab Radio and maybe the media player, the rest of it is just pointless rubbish to me.

yuks - I've heard stories of MIB systems going bad, but we do need a scan done on the car first. It is a possibility that the MIB system is shorting to ground and being a parasitic drain on the battery. Keep it on a battery maintainer. Don't pull random fuses...we need a scan of the car first.

MIB systems - we have a resident expert in-house: @pab567 - can hopefully sort you with a new system once we have a full code scan of the car.

As @varaderoguy first we need a full scan done on the car to see all the errors.

Thank you Gents.

And that was interesting.

ODB11 gave me the following list.

03 Brakes

    System description: ESC
    Software number: 3Q0907379T
    Software version: 0393
    Hardware number: 3Q0907379C
    Hardware version: H32
    Serial number: 52025000000098
    ODX name: EV_Brake1UDSContiMK100ESP
    ODX version: 034033
    Long coding: 1C078A912426096F0078070041C8293851249000E08294F214635072C009

    Trouble codes:
        C101B01 - Right front ABS wheel speed sensor Electrical error
            Intermittent
        C101C07 - Left rear ABS wheel speed sensor mechanical malfunction
            Intermittent
        U140000 - Function restriction due to insufficient voltage
            Intermittent
        C114602 - Tire pressure monitoring display Signal error
            Intermittent

76 Parking Assistance

    System description: PARKHILFE PLA
    Software number: 5Q0919298K
    Software version: 0054
    Hardware number: 5Q0919298
    Hardware version: H12
    Serial number: 39431519202096
    ODX name: EV_EPHVA2CAU3700000
    ODX version: 003021
    Long coding: 0131061041

    Trouble codes:
        U140000 - Function restriction due to insufficient voltage
            Intermittent
        U112300 - Databus error value received
            Intermittent
        U112300 - Databus error value received
            Intermittent
        U112300 - Databus error value received
            Intermittent
        U112300 - Databus error value received
            Intermittent
        U112300 - Databus error value received
            Intermittent
        U112300 - Databus error value received
            Intermittent
        U112300 - Databus error value received
            Intermittent

19 Gateway

    System description: GW MQB High
    Software number: 5Q0907530AF
    Software version: 1224
    Hardware number: 5Q0907530F
    Hardware version: 128
    Serial number: 0003735960
    ODX name: EV_GatewLear
    ODX version: 013020
    Long coding: 030100040F087300EB000258080F00010001050000000000000000000000

    Subsystems:
        System description: J367-BDM    
        Software version: 0223
        Hardware version: H08
        Serial number: 52201H11004290578046

        System description: E221__MFL-PR6
        Software version: 0150
        Hardware version: H02
        Serial number: 000000000A0988160715

    Trouble codes:
        U105400 - Information electronics control module 1 No Communication
            static
        U006500 - Vehicle Communication Bus E Performance
            Intermittent
        U101100 - Supply voltage Voltage too low
            Intermittent
17 Dashboard

    System description: KOMBI
    Software number: 5E0920951B
    Software version: 6420
    Hardware number: 5E0920951B
    Hardware version: 312
    ODX name: EV_DashBoardVDDMQBAB
    ODX version: 009046
    Long coding: 27A40800A590A60001886A011000000000000000

    Trouble codes:
        U101100 - Supply voltage Voltage too low
            Intermittent
        U111000 - Function restriction due to communication interruption
            static
        U111000 - Function restriction due to communication interruption
            static
        U111000 - Function restriction due to communication interruption
            static
        U110100 - Component protection active
            Intermittent
15 Airbag

    System description: Airbag VW20
    Software number: 3Q0959655AS
    Software version: 0200
    Hardware number: 3Q0959655AS
    Hardware version: 013
    Serial number: 003SQPEV1B3D
    ODX name: EV_AirbaVW20TS6VW48X
    ODX version: 001116
    Long coding: 98CCC000000000005C5400CC008800000065

    Subsystems:
        System description: SideSensor_Df
        Software version: 0887
        Hardware version: 008
        Serial number: 3576U0000009DA58C51S
        Long coding: 2D2D2D

        System description: SideSensor_Pf
        Software version: 0887
        Hardware version: 008
        Serial number: 3586U0000006E658C51N
        Long coding: 2D2D2D

        System description: SideSensor_Dr
        Software version: 0148
        Hardware version: 301
        Serial number: 3516RB11A69070000001
        Long coding: 2D2D2D

        System description: SideSensor_Pr
        Software version: 0148
        Hardware version: 301
        Serial number: 3526R01706E07000000Z
        Long coding: 2D2D2D

        System description: FrontSensor_D
        Software version: 0149
        Hardware version: 304
        Serial number: 3556V658E4307000000B
        Long coding: 2D2D2D

    Trouble codes:
        U110100 - Component protection active
            Intermittent

13 Adaptive Cruise Control

    System description: ACC Bosch MQB
    Software number: 5Q0907572F
    Software version: 0400
    Hardware number: 5Q0907572F
    Hardware version: H05
    Serial number: 05071503271778
    ODX name: EV_ACCMRRBoschVW372
    ODX version: 001016
    Long coding: 00000200FE0339

    Trouble codes:
        C10DF00 - Brake temperature
            Intermittent
        U112300 - Databus error value received
            Intermittent
        U112300 - Databus error value received
            Intermittent
        U112300 - Databus error value received
            Intermittent
        B10E7F0 - Cruise Control Front Distance Range Sensor separated
            Intermittent
        U112300 - Databus error value received
            Intermittent
        U112300 - Databus error value received
            Intermittent
        U112300 - Databus error value received
            Intermittent

09 Central Electrics

    System description: BCM PQ37BOSCH
    Software number: 5Q0937086AK
    Software version: 0162
    Hardware number: 5Q0937086AK
    Hardware version: 028
    Serial number: 86582307153070
    ODX name: EV_BodyContrModul1UDSBosc
    ODX version: 015002
    Long coding: 0F000942424702FB07A04082B10C07280000000000000000000000000000

    Subsystems:
        System description: WWS371 150530
        Software version: 0570
        Hardware version: 041
        Serial number:         150611170818
        Long coding: 065DDD

        System description: RLHS        
        Software version: 0059
        Hardware version: 037
        Serial number: S5Y15M08D10H02M38S35
        Long coding: 00885D

        System description: Sensor, DWA 
        Software version: 0316
        Hardware version: 005
        Serial number: 000000000ZY151392PHP

        System description: Sirene, DWA 
        Software version: 0311
        Hardware version: 004
        Serial number: 00000000000063044017

    Trouble codes:
        U101100 - Supply voltage Voltage too low
            Intermittent
        U140000 - Function restriction due to insufficient voltage
            Intermittent
        U110100 - Component protection active
            Intermittent
        B202300 - Function limitation due to active protector function
            Intermittent

08 Air Conditioning

    System description: Climatronic
    Software number: 5E0907044Q
    Software version: 1002
    Hardware number: 5E0907044Q
    Hardware version: H04
    ODX name: EV_ACClimaBHBVW37X
    ODX version: 004131
    Long coding: 02110104000100011005000000101000

    Trouble codes:
        B10CD00 - Function limitation due to energy management
            Intermittent

Multimedia however produces nothing at all.

And I've just noticed the USB port wont charge my phone.

So given the above either my car is on fire and I haven't noticed or its all legacy stuff which is linked to the ABS & Battery failure.

I'm inclined toward the latter as my dash is clear of lights, the parking assist does its annoying beeping when I wait for the gate to open at work and the car is driving fine.

Oddly it seems to be handling better and my average MPG has improved since the screen went blank.

I did clear an EML the other day on my basic scanner caused by a P545 error (a long running saga) but that was the only one on there.

Now the obvious thing is for me to clear these down on ODB11 and see where that gets me, which I will do after its MOT next week, I can live without the radio til then.

I'll report back then unless you fine folk can see the obvious cause in the list above?

Edited 27 May, 20251 yr by Igol

After the easiest ball joint replacement I've ever done I now have an MOT.

All fuses in main box and cabin box have been checked and are fine.

I've cleared all fault codes and run the scan again which gave me a zero result from the Multimedia module and this single code

Car: Skoda Octavia RS 4x4
    Year: 2016
    Body type: Estate
    Engine: CRMB
    Mileage: 154803 KM


19 Gateway
---------------------------------------------------------------
    System description: GW MQB High
    Software number: 5Q0907530AF
    Software version: 1224
    Hardware number: 5Q0907530F
    Hardware version: 128
    Serial number: 0003735960
    ODX name: EV_GatewLear
    ODX version: 013020
    Long coding: 030100040F087300EB000258080F00010001050000000000000000000000

    Subsystems:
        System description: J367-BDM    
        Software version: 0223
        Hardware version: H08
        Serial number: 52201H11004290578046

        System description: E221__MFL-PR6
        Software version: 0150
        Hardware version: H02
        Serial number: 000000000A0988160715

    Trouble codes:
        U105400 - Information electronics control module 1 No Communication
            static

Which does sound a little terminal to me.

Advice appreciated.

22 hours ago, Igol said:

Trouble codes:
        U105400 - Information electronics control module 1 No Communication
            static

Which does sound a little terminal to me.

Advice appreciated.

Could be missing/blown fuse or wiring/connector problem too.

On 06/06/2025 at 12:13, PetrolDave said:

Could be missing/blown fuse or wiring/connector problem too.

Hopefully our resident expert @pab567 will have a 'just press this' answer :)

On 06/06/2025 at 12:13, PetrolDave said:

Could be missing/blown fuse or wiring/connector problem too.

4 hours ago, Igol said:

Hopefully our resident expert @pab567 will have a 'just press this' answer :)

Not convinced that it's possible to remotely detect fuse or wiring problems?

Well possibly not.

But as I already mentioned the fuses are all fine and indeed present as I have managed to restrict all poltergeist activity to the Bank 1 EGT sensor.

But maybe @pab567 can indicate if there is indeed a serviceable fuse within the unit or which wire is which so that I may test them for continuity - you know, useful information.

Edited 8 June, 20258 Jun by Igol

I believe your unit is broken and in the same time gets some current from battery even if the ignition is off. I'm afraid it must be verified outside the car. Pls share VIN so I can check the details and let you know if it should be rather repaired or replaced.

Appreciated.

It does appear a little terminal especially with the the AUX/USB socket being U/S too.

PM with VIN on the way.

After a few months of better MPG and silent running I eventually got round to pulling everything out of the dash/glovebox and began looking at a rather nice Blaupunkt stereo with actual buttons.

The new facia panel was ordered and then the tyre pressure sensor decided to ping.

Nothing interesting just normal loss over time so all four back up to pressure and.....bugger...unlike the works Yeti the reset is in the headunit.

Still thats fine I can do it off ODBEleven.

Now whether it was down to it being the old version or because I'd pulled everything out, ODBEleven showed a grand total of 5 control units which didnt include the ever present P545 error.

And then I thought there was only one thing I hadnt tried intentionally - turning it off and back on again.

So I got the head unit and main box out of the garage and plugged them back in.

And there was the clock on the screen.

So the interesting number will be the MPG when I go to work today.