EPB Faults - final shot in the dark!

[Duffy]

Thanks for that.

I did go through the whole motor/caliper question but it's due a brake fluid change so I'll end up swapping the unit out as a whole. What I will do though is use an electrical sealant grease around the seal to try and futureproof the repair.

Between the sat nav aerial on the D4 and the PB motors on the D3, Audi have taken their eye off of the ball on the whole waterproofing front!

[Duffy]

Problem solved, new caliper on the offside, working motor from there transferred back to the nearside, recalibrated and seems fine.

It was meant to be an exchange caliper but it's split new and came in a TRW box complete with bolts, shims etc. and prefilled with fluid. We'll see how long this one lasts!

Well done Murray's

[daviesbike]

I have skipped to the end of this thread, but I had the same issue and it turned out to be the EPB ECU that lives in the boot under the battery, I changed this and instant relief from the symphony of beeps

[Duffy]

I ruled that out by switching the parking brake motors over and the fault transferred with it so definitely not that on this occasion

[snapdragon]

Must be something in the air - On the motorway today, I had a beep and the small EPB warning. I thought :-why now ? I am not using it- and carried on so I could do VCDS at home.
I stopped off 100 miles later and set off again and later a lorry started to flash me. One of the rear brakes was smoking.

I thanked him and pulled over and got out and the drivers brake was very hot. I asked the wife to cycle the EPB and it was making the usual noise but came up with the big full DIS error. Kept cycling it and seemed free so drove home slowly. When I got home it was not that hot and VCDS had 3 errors as at the bottom.

If the weather's fine at the weekend, I'll check the connectors again and remove them and grease them up and hope for the best.
...

Thursday,26,February,2015,18:23:47:22166
VCDS -- Windows Based VAG/VAS Emulator
VCDS Version: 15.2.0.0 (x64)
Data version: 20150130
---------------------------------------------------


Address 53: Parking Brake Labels: 4E0-910-801.clb
Control Module Part Number: 4E0 910 801 D HW: 4E0 907 801 B
Component and/or Version: EPB A4EC0230 H03 0230
Software Coding: 0000221
Work Shop Code: WSC 00097 210 194805
VCID: 20446925F395753843-8075
3 Faults Found:

02443 - Control Head
003 - Mechanical Failure - Intermittent
Freeze Frame:
Fault Status: 00110011
Fault Priority: 3
Fault Frequency: 1
Reset counter: 206
Mileage: 336952 km
Time Indication: 0
Date: 2015.02.26
Time: 16:41:12

Freeze Frame:
Voltage: 12.63 V
Count: 49

01487 - System Function Test
008 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 4
Fault Frequency: 1
Reset counter: 206
Mileage: 336952 km
Time Indication: 0
Date: 2015.02.26
Time: 16:32:36

Freeze Frame:
Voltage: 12.63 V
Count: 160

02434 - Supply Voltage for Control Module for Left Channel
006 - Short to Plus - MIL ON
Freeze Frame:
Fault Status: 11110110
Fault Priority: 1
Fault Frequency: 2
Reset counter: 166
Mileage: 336776 km
Time Indication: 0
Date: 2015.02.26
Time: 14:09:51

Freeze Frame:
Voltage: 12.63 V
Count: 110

[Duffy]

And now the nearside one has gone!

Certainly predictable enough I suppose as it had the same cracking to the plastic cover that the offside did.

Had to pop the fuses on this one though as the ECU thought it was stuck on (it wasn't, it had failed in the open position).

Vexing, terribly, terrible vexing!

An easy fix though.