Persistent ABS and ESP faults after drained battery

[Ryan_R]

So thanks to a PolarFIS glitch (which every so often freezes leaving the CAN bus gateway somewhat disconnected) and me not driving the Golf since last weekend I found the battery drained due to accessories not being turned off when I last removed the key as they normally would/should.

Due to timing I had to leave it and head to work. Family member called and offered to take the battery out and charge it up in the shed. Sure, no problem, I've had the battery disconnected a few times now, now big deal to reset the clocks and recalibrate the power windows and ABS sensor.

So I get home to find the battery reinstalled with enough power to start the engine, and I get the usual beeps ("Defect Brake Servo", followed by "ESP Fault", with the ESP and (!) warning lamps illuminated) but whereas a short drive would normally clear the warning lamps they have stayed on since with multiple trips. I have cleared all DTCs (most of them related to low voltage) and these remain:

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Address 03: ABS Brakes (-----)       Labels: 1K0-907-379-60EC1F.clb
   Part No SW: 1K0 907 379 AP    HW: 1K0 907 379 AP
   Component: ESP MK60EC1   H45 0107  
   Revision: 00H45001    
   Coding: 163B600D21240000680B06E7841A00803100
   Shop #: WSC 01357 011 00200
   VCID: 8021D1D01385CE1E1B7-80D5

1 Fault Found:
01044 - Control Module Incorrectly Coded 
            000 - -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 222
                    Mileage: 74759 km
                    Time Indication: 0
                    Date: 2049.14.04
                    Time: 06:57:37

             Freeze Frame:
                    Count: 3
                    Count: 14
                    Count: 12288
                    Count: 8192
                    Count: 41472
                    Count: 0
                    Count: 0
                    Count: 90


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Address 77: Telephone (J412)       Labels: 7P6-035-730.clb
   Part No SW: 7P6 035 730 L    HW: 7P6 035 730 L
   Component: TELEFON       H15 3200  
   Revision: 1B001001    Serial number: 00007663719961
   Coding: 0A00000000000110
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_UHVNA 002720
   ROD: EV_UHVNA.rod
   VCID: 3B5BE63CB2E3EDC68E5-806E

1 Fault Found:
9458453 - Cellular Antenna 
          B1053 15 [009] - Open or Short to Plus
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 222
                    Mileage: 74759 km
                    Date: 2049.14.04
                    Time: 07:00:41


End   ---------------------------------------------------------------------

I've checked an older VCDS log file and the ABS control module coding is the same. The dealer replaced rear brake pads last week.

Any ideas on the cause and resolution? I've got an interstate trip scheduled on Sunday so am hoping to fix ASAP tomorrow. The car steers and brakes ok (obviously) but I can feel a difference in behaviour. I'm pretty sure ESP is disabled from how the car feels plus holding the ESP Off console button doesn't produce any 'ESP Off' messages.



TIA