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The 4 hasn't had much action in the last few weeks... Took her out for a run and ESP on solid after giving the beans... Clears when restart, but on again after some spirited driving (car performs fine).
What do we think? MAF? I've read that could be a culprit... Haven't had time to run VCDS on her yet... Ordered some MAF cleaner though... Worth a shot.

Are you talking about the EPC by any chance opposed to the ESP as in traction control with you referring to the MAF? Vaccume leak maybe if so? I took the valve out when I did a CAF and it got rid of the EPC light. It's prone to failure so I believe.

Hi Chris_m...It's the traction control light... Picture of Car with wiggly tyre tracks underneath
Did a search and have seen a couple of references to the MAF triggering this along with EPC... Not sure why it would, or if that's actually a true statement, but thought given that's such a simple job I'd give that a go first.

Possible but could also be a wheel speed sensor or brake light switch, so you'd be better off hooking up VCDS and pulling any logged codes. Then post the results back up here. RS4 MAF's seem to be very very delicate, so I wouldn't mess around with it until you were sure that's the cause of your problem.

I guess I'll be searching for brake light switch issues?

-------------------------------------------------------------------------------
Address 01: Engine Labels: 079-910-560-BNS1.lbl
Part No SW: 8E1 910 560 HW: 8E1 907 560
Component: 4.2L V8/4V FSI ª0090
Revision: --H03--- Serial number: XXXXXXXXXXXXXX
Coding: 01040003180F0160
Shop #: WSC 00664 210 87543
VCID: E3CF3155224E191

1 Fault Found:
006435 - Please Check DTC Memory of ECU Number 2
P1923 - 008 -
Freeze Frame:
Fault Status: 01101000
Fault Priority: 0
Fault Frequency: 1
Mileage: 127589 km
Time Indication: 0

Freeze Frame:
RPM: 0 /min
Load: 0.0 %
Speed: 0.0 km/h
Temperature: 15.0°C
Temperature: 17.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 11.430 V

Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 8E0-910-517.lbl
Part No SW: 8E0 910 517 G HW: 8E0 614 517 BD
Component: ESP8 quattro H05 0150
Revision: 00000000 Serial number: 00000000000000
Coding: 0004533
Shop #: WSC 06325 000 00000
VCID: 2B5F19758A1E111

1 Fault Found:
00526 - Brake Light Switch-F
011 - Open Circuit - Intermittent
Freeze Frame:
Fault Status: 00101011
Fault Priority: 2
Fault Frequency: 7
Reset counter: 38
Time Indication: 0

Freeze Frame:
Hex Value: 0x1CC0
Hex Value: 0x4006
Hex Value: 0x0004
Hex Value: 0xB0A8
Hex Value: 0x0001


-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8E0-820-043.lbl
Part No: 8E0 820 043 BM
Component: A4 Klimaautomat 2832
Coding: 00000
Shop #: WSC 00000
VCID: 6DDBD76D278ADF1

No fault code found.

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Address 09: Cent. Elect. Labels: 8E0-907-279-8EC.lbl
Part No: 8E0 907 279 L
Component: int. Lastmodul ECE 0504
Coding: 00021
Shop #: WSC 06325
VCID: 3B7F2935297E811

No fault code found.

-------------------------------------------------------------------------------
Address 11: Engine II Labels: 079-910-560-BNS2.lbl
Part No SW: 8E1 910 560 HW: 8E1 907 560
Component: 4.2L V8/4V FSI ª0090
Revision: --H03--- Serial number: XXXXXXXXXXXXXX
Coding: 01040003180F0160
Shop #: WSC 00664 210 87543
VCID: E3CF3155224E191

3 Faults Found:
000768 - Random/Multiple Cylinder Misfire Detected
P0300 - 001 -
Freeze Frame:
Fault Status: 01100001
Fault Priority: 0
Fault Frequency: 2
Mileage: 123288 km
Time Indication: 0

Freeze Frame:
RPM: 1552 /min
Load: 34.5 %
Speed: 0.0 km/h
Temperature: 6.0°C
Temperature: 9.0°C
Absolute Pres.: 990.0 mbar
Voltage: 10.668 V

000773 - Cylinder 5
P0305 - 001 - Misfire Detected
Freeze Frame:
Fault Status: 01100001
Fault Priority: 0
Fault Frequency: 1
Mileage: 123314 km
Time Indication: 0

Freeze Frame:
RPM: 836 /min
Load: 47.0 %
Speed: 0.0 km/h
Temperature: 9.0°C
Temperature: 11.0°C
Absolute Pres.: 980.0 mbar
Voltage: 11.303 V

000776 - Cylinder 8
P0308 - 001 - Misfire Detected
Freeze Frame:
Fault Status: 01100001
Fault Priority: 0
Fault Frequency: 1
Mileage: 123314 km
Time Indication: 0

Freeze Frame:
RPM: 836 /min
Load: 47.0 %
Speed: 0.0 km/h
Temperature: 9.0°C
Temperature: 11.0°C
Absolute Pres.: 980.0 mbar
Voltage: 11.303 V


-------------------------------------------------------------------------------
Address 15: Airbags Labels: 8E0-959-655-94.lbl
Part No SW: 8E0 959 655 G HW: 8E0 959 655 G
Component: Airbag 9.41 H12 3730
Revision: 91H12373 Serial number: 0036M0093BW0
Coding: 0430612
Shop #: WSC 06325 000 00000
VCID: 3B7F29357A7E811

No fault code found.

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Address 16: Steering wheel Labels: 8E0-953-549-T.lbl
Part No: 8E0 953 549 T
Component: Lenksáulenmodul 0201
Coding: 06021
Shop #: WSC 06325
VCID: 448D52C95480FE9

No fault code found.

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Address 17: Instruments Labels: 8E0-920-9xx-8EC.lbl
Part No SW: 8E0 920 981 R HW: 8E0 920 981 R
Component: KOMBI+WFS 4 H12 0030
Revision: 0030 Serial number: 00000000000000
Coding: 0023411
Shop #: WSC 22125 000 1048576
VCID: 3C7D2A297C70869

No fault code found.

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr Labels: 8E0-959-760.lbl
Part No: 8E0 959 760 A
Component: Sitzverstellung H01 0020
Coding: 00001
Shop #: WSC 06325
VCID: 32610411FE34409

No fault code found.

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Address 37: Navigation Labels: 8E0-035-192-RNSE.lbl
Part No SW: 8E0 035 192 D HW: 8E0 035 192 D
Component: RNS-E HIGH EU H71 0650
Revision: 02S Serial number: AUZBZ7E1127614
Coding: 0309114
Shop #: WSC 06325 000 00000
VCID: 254BEF4DEFFA271

3 Faults Found:
02261 - Data Medium
014 - Defective - Intermittent
Freeze Frame:
Fault Status: 00101110
Fault Priority: 5
Fault Frequency: 254
Reset counter: 245
Time Indication: 0
Date: 2013.02.15
Time: 14:35:43

Freeze Frame:
Mileage: 655350 km
Count: 2102
Clock: 10:20

00858 - Connection; Radio ZF Output to Antenna Amplifier
011 - Open Circuit - Intermittent
Freeze Frame:
Fault Status: 00101011
Fault Priority: 5
Fault Frequency: 107
Reset counter: 245
Time Indication: 0
Date: 2011.11.07
Time: 17:21:30

Freeze Frame:
Mileage: 655350 km
Count: 104
Clock: 07:58

00857 - CD Changer Unit (R41)
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 5
Fault Frequency: 2
Reset counter: 245
Time Indication: 0
Date: 2014.10.15
Time: 10:22:01


-------------------------------------------------------------------------------
Address 46: Central Conv. Labels: 8E0-959-433-MAX.lbl
Part No: 8E0 959 433 CA
Component: Komfortgerát T3B 3332
Coding: 06911
Shop #: WSC 06325
VCID: 72E1C4113EB4009

Subsystem 1 - Part No: 8E2959802F
Component: Tõrsteuer.FS BRM 0506

Subsystem 2 - Part No: 8E2959801F
Component: Tõrsteuer.BF BRM 0606

Subsystem 3 - Part No: 8E0959801E
Component: Tõrsteuer.HL BRM 0606

Subsystem 4 - Part No: 8E0959802E
Component: Tõrsteuer.HR BRM 0606

2 Faults Found:
01370 - Alarm triggered by Interior Monitoring
35-00 - -
00962 - Alarm via. Tilt Sensor
35-00 - -

-------------------------------------------------------------------------------
Address 55: Xenon Range Labels: 4F0-910-357.lbl
Part No SW: 4F0 910 357 E HW: 4F0 907 357 E
Component: AFS 1 H01 0010
Revision: 00000001 Serial number:
Coding: 0000019
Shop #: WSC 06325 000 00000
VCID: 2855E6799BE83A9

Part No: 8E0 941 329
Component: AFS-Modul links H03 0020

Part No: 8E0 941 329
Component: AFS-Modul rechtsH03 0020

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio Labels: 8E0-035-192-RNSE.lbl
Part No SW: 8E0 035 192 D HW: 8E0 035 192 D
Component: RNS-E HIGH EU H71 0650
Revision: 02S Serial number: AUZBZ7E1127614
Coding: 0309114
Shop #: WSC 06325 000 00000
VCID: 254BEF4DEFFA271

3 Faults Found:
02261 - Data Medium
014 - Defective - Intermittent
Freeze Frame:
Fault Status: 00101110
Fault Priority: 5
Fault Frequency: 254
Reset counter: 245
Time Indication: 0
Date: 2013.02.15
Time: 14:35:43

Freeze Frame:
Mileage: 655350 km
Count: 2102
Clock: 10:20

00858 - Connection; Radio ZF Output to Antenna Amplifier
011 - Open Circuit - Intermittent
Freeze Frame:
Fault Status: 00101011
Fault Priority: 5
Fault Frequency: 107
Reset counter: 245
Time Indication: 0
Date: 2011.11.07
Time: 17:21:30

Freeze Frame:
Mileage: 655350 km
Count: 104
Clock: 07:58

00857 - CD Changer Unit (R41)
004 - No Signal/Communication - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 5
Fault Frequency: 2
Reset counter: 245
Time Indication: 0
Date: 2014.10.15
Time: 10:22:01


-------------------------------------------------------------------------------
Address 57: TV Tuner Labels: 4D0-919-146.clb
Part No SW: 4D0 919 146 D HW: 4D0 919 146 D
Component: TV Tuner H04 0580
Revision: 01H04001 Serial number: 00000000013157
Coding: 0007030
Shop #: WSC 06325 000 00000
VCID: 2A511C7186E4089

1 Fault Found:
00864 - Antenna 2 for TV (R56)
011 - Open Circuit - Intermittent

-------------------------------------------------------------------------------
Address 65: Tire Pressure Labels: 8E0-907-273.lbl
Part No SW: 8E0 907 273 HW: 8E0 907 273
Component: Reifendruck 3 H03 0110
Coding: 0022523
Shop #: WSC 02195 785 00200
VCID: E9D3237DC362431

No fault code found.

-------------------------------------------------------------------------------
Address 76: Park Assist Labels: 8E0-919-283-8EC.lbl
Part No SW: 8E0 919 283 E HW: 8E0 919 283 E
Component: Parkhilfe 8-Kan H06 0010
Revision: 00H06000 Serial number: 00067802120532
Coding: 0000104
Shop #: WSC 06325 000 00000
VCID: 32610411AE34409

3 Faults Found:
01626 - Sensor for Parking-Aid; Front Right (G252)
009 - Open or Short to Ground
Freeze Frame:
Fault Status: 01101001
Fault Priority: 3
Fault Frequency: 1
Reset counter: 165
Time Indication: 0

01549 - Supply Voltage for Parking-Aid Sensor
009 - Open or Short to Ground - Intermittent
Freeze Frame:
Fault Status: 00101001
Fault Priority: 3
Fault Frequency: 20
Reset counter: 0
Time Indication: 0

01549 - Supply Voltage for Parking-Aid Sensor
002 - Lower Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 3
Fault Frequency: 8
Reset counter: 0
Time Indication: 0


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

markshepps wrote:I guess I'll be searching for brake light switch issues?


1 Fault Found:
006435 - Please Check DTC Memory of ECU Number 2
P1923 - 008 -
Freeze Frame:
Fault Status: 01101000
Fault Priority: 0
Fault Frequency: 1
Mileage: 127589 km
Time Indication: 0

1 Fault Found:
00526 - Brake Light Switch-F
011 - Open Circuit - Intermittent
Freeze Frame:
Fault Status: 00101011
Fault Priority: 2
Fault Frequency: 7
Reset counter: 38
Time Indication: 0

Yes, that's where I'd start looking. It shouldn't be that expensive £15-£25

Many thanks! Does this look like the right part?
http://www.ebay.co.uk/itm/BRAKE-LIGHT-S ... 3379f59e15

Easy job? Any pointers?

Why are there so many other error codes? I also have this in my Vag logs... but no error codes on the dash....

leadfoot wrote:Why are there so many other error codes? I also have this in my Vag logs... but no error codes on the dash....

Last time I ran VCDS was in Nov of 2014, and I didn't clear the codes, so these have all been logged for some time with the exception of the brake light switch issue.
All works fine except for parking sensors which I've just never got around to sorting out... Some misfires logged, but only a few instances over quite a long period so not too worried about that.... Ordered new brake light switch so hopefully that'll sort the problem.

OK likely a stupid question, but is the switch on the left the brake light switch (both of these are next to the clutch pedal)?

Can't find any other likely candidates, but before pulling things about would like to check as I don't want to be breaking any clutch switches

Just to close this out in case it's useful down the road.... I can confirm the switch on the far left is indeed the brake light switch.
Once changed the brake lights are operational and no more solid ESP on dash.

Thanks Surrey Sam for all the pointers and info!

Not a problem

It's good to see that not all RS4 faults are wallet emptying

Surrey Sam wrote:Not a problem

It's good to see that not all RS4 faults are wallet emptying

Yep, cost me less than a tenner!

markshepps wrote:Just to close this out in case it's useful down the road.... I can confirm the switch on the far left is indeed the brake light switch.
Once changed the brake lights are operational and no more solid ESP on dash.

Thanks Surrey Sam for all the pointers and info!

I had the exact same issue, gotta love cheap fixes!