I've had a few quirks on my A8's EPB in recent weeks but I've only just started to have the 'pad alarm' each time I start the car with the following VCDS faults logged after I clear the ECU DTCs.
Code:
-------------------------------------------------------------------------------
Address 53: Parking Brake Labels: 4E0-910-801.clb
Part No SW: 4E0 910 801 A HW: 4E0 907 801
Component: EPB AV1C1010 H01 1010
Revision: AV1C1010
Coding: 0000221
Shop #: WSC 13765 210 01865
VCID: 1D31BE15C4600FAF07-8048
2 Faults Found:
02596 - Rear Brake Pads Worn
002 - Lower Limit Exceeded
Freeze Frame:
Fault Status: 01100010
Fault Priority: 6
Fault Frequency: 6
Reset counter: 42
Mileage: 367920 km
Time Indication: 0
Date: 2017.06.05
Time: 14:14:55
Freeze Frame:
Voltage: 12.42 V
Count: 60
02596 - Rear Brake Pads Worn
008 - Implausible Signal
Freeze Frame:
Fault Status: 01111000
Fault Priority: 6
Fault Frequency: 2
Reset counter: 42
Mileage: 366704 km
Time Indication: 0
Date: 2017.04.24
Time: 10:03:12
Freeze Frame:
Voltage: 12.63 V
Count: 61
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The MVBs show a pad thickness of 2mm but the quick visual I did yesterday seems to indicate there's about 5mm!
I suspect the 'pad warning' comes up when the mechanism thinks the pad thickness is below 3mm. For 'economic reasons', I'd like to try and adjust the thickness up to 4mm to give me a few months more before possible replacement. Trouble is, it's not clear how I just do a 'thickness adjust' in isolation on an otherwise working system.
Can I do it 'engine on' as I don't have a battery charger/power supply?
Do I need to open/close manually with lever or electronically with VCDS before trying to adjust?
I've looked at the VCDS Wiki and it's not particularly helpful as to what's needed in what order?
Any advice gratefully received ...
Thanks - Julian