A3 8V electronic parking brake issue

Ashbash516

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Hi,

I have an 2013 A3 2.0 TDI (148). My electronic parking brake will no longer auto release.

A bit of history: I experienced the same issue with the epb auto release which was resolved inadvertently upon a new battery. The old battery was 6 yrs old @ 12.1v . I had it replaced with a Varta Silver dynamic battery. Currently its at 12.7v when engine off but strangely only 13.2v when engine is at idle rather than the usual 14.4v.

Could this be an alternator issue? Causing the epb not to release automatically? And does this tie in with the vcds scan report below showing a few faults

Any guidance would be appreciated

Thank you
 
Last edited:
Vcds auto scan (3 errors):

Chassis Type: 8V-AU37 (5Q0) Scan: 01 03 08 09 15 16 17 19 42 44 52 55 5F BB BC VIN: WA*************,,, Mileage: 134186km-83379miles 01-Engine -- Status: OK 0000 03-ABS Brakes -- Status: Malfunction 0010 08-Auto HVAC -- Status: Malfunction 0010 09-Cent. Elect. -- Status: Malfunction 0010 15-Airbags -- Status: OK 0000 16-Steering wheel -- Status: OK 0000 17-Instruments -- Status: OK 0000 19-CAN Gateway -- Status: OK 0000 42-Door Elect, Driver -- Status: OK 0000 44-Steering Assist -- Status: OK 0000 52-Door Elect, Pass. -- Status: OK 0000 55-Headlight Range -- Status: OK 0000 5F-Information Electr. -- Status: OK 0000 BB-Door Rear Drv -- Status: OK 0000 BC-Door Rear Pass -- Status: OK 0000 ------------------------------------------------------------------------------- Address 01: Engine (J623-CRBC) Labels:. 04L-907-309-V1.clb Part No SW: 04L 906 021 DS HW: 04L 907 309 D Component: R4 2,0L EDC H22 7544 Revision: 83H22--- Coding: 02190012030501082000 Shop #: WSC 03080 002 1048576 ASAM Dataset: EV_ECM20TDI01104L906021DS 002012 ROD: EV_ECM20TDI01104L906021DS_002.rod VCID: 79ACE5F1C95BEB0FD95-802C No fault code found. Readiness: 0 0 0 0 0 ------------------------------------------------------------------------------- Address 03: ABS Brakes (J104) Labels: 5Q0-907-379-IPB-V1.clb Part No SW: 5Q0 907 379 AA HW: 5Q0 907 379 G Component: ESC H31 0457 Revision: 00000000 Serial number: 63163000001DFC Coding: 12F18AA224200A730180060441C9294851245080608294F2004300388608 Shop #: WSC 06314 790 00021 ASAM Dataset: EV_Brake1UDSContiMK100IPB 033001 ROD: EV_Brake1UDSContiMK100IPB_033_AU37.rod VCID: 7BA0FFF9C367D91FCB9-802E 1 Fault Found: 16401 - Tire Pressure Warning C102D 00 [008] - - Intermittent - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Status: 00000001 Fault Priority: 6 Fault Frequency: 3 Reset counter: 168 Mileage: 132556 km Date: 2019.04.03 Time: 18:14:58 ------------------------------------------------------------------------------- Address 08: Auto HVAC (E87) Labels:| 8V0-820-043.clb Part No SW: 8V0 820 043 C HW: 8V0 820 043 C Component: AC Automat H13 0052 Revision: 20026000 Serial number: 00000000196227 Coding: 03100104002000011000000000001100 Shop #: WSC 06314 790 00021 ASAM Dataset: EV_AirCondiFrontVaAU37X 008020 ROD: EV_AirCondiFrontVaAU37X.rod VCID: 323E12DD54ADD85758F-8066 Relative humidity sensor in fresh air intake duct: Subsystem 1 - Part No SW: 4H0 907 658 HW: 4H0 907 658 Component: AQ_Hum_Sensor H03 0003 Serial number: B0480AD6000000000001 1 Fault Found: 65544 - Button(s) or Switch(es) in Operating Device B1312 07 [008] - Mechanical Failure Intermittent - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Status: 00000001 Fault Priority: 2 Fault Frequency: 3 Reset counter: 146 Mileage: 133035 km Date: 2019.04.10 Time: 18:05:45 Voltage terminal 30: 13.0 V Outside air temperature: 14 °C Pressing a button-Defrost: not activated Pressing a button-Recirculating air: not activated Pressing a button-Rear window defogger: not activated Pressing a button-AC: not activated Pressing a button-Left heated seat: not activated Pressing a button-Right heated seat: not activated Pressing a button-OFF: not activated Pressing a button-AUTO: not activated Pressing a button-Footwell air distribution: not activated Pressing a button-Upper body vent air distribution: not activated Pressing a button-Air distribution up: not activated Pressing a button-Left cabin heater: not activated Pressing a button-Right cabin heater: not activated ------------------------------------------------------------------------------- Address 09: Cent. Elect. (J519) Labels:| 5Q0-937-08X-HV1.clb Part No SW: 5Q0 937 084 AE HW: 5Q0 937 084 AE Component: BCM MQBAB H H16 0124 Serial number: 00011332400918 Coding: 07040A42C24120DD03844004B31C07A80000000000000000000000000000 Shop #: WSC 06314 790 00021 ASAM Dataset: EV_BCMCONTI 012001 ROD: EV_BCMBOSCH_012.rod VCID: 7BA0FFF9C367D91FCB9-802E Control Unit For Wiper Motor: Subsystem 1 - Part No SW: 8V2 955 119 A HW: 8V2 955 119 Labels: 5QX-955-119-V1.CLB Component: WWS370 131111 041 0580 Serial number: 131112193237 Coding: 0A47F7 Light switch: Subsystem 2 - Part No SW: 8V0 941 531 J HW: 8V0 941 531 J Component: E1 - LDS MQB H05 0032 Serial number: 10 07 2013 00000203 Sensor For Anti Theft Alarm System: Subsystem 3 - Part No SW: 8V0 951 177 HW: 5Q0 951 172 Component: Sensor, DWA 005 0315 Serial number: 000000000ZY132802XMB Alarm horn: Subsystem 4 - Part No SW: 5Q0 951 605 HW: 5Q0 951 605 Component: Sirene, DWA 004 0311 Serial number: 00000000000028330265 Relative Air Humidity Interior Sender: Subsystem 5 - Part No SW: 8U0 955 559 HW: 8U0 955 559 Component: G355_FeuchteS H07 0002 Serial number: 20565825 1 Fault Found: 197644 - Control Circuit for Fuel Tank Flap B1263 01 [008] - Electrical Failure Intermittent - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Status: 00000001 Fault Priority: 4 Fault Frequency: 2 Reset counter: 147 Mileage: 133140 km Date: 2019.04.13 Time: 11:50:42 ------------------------------------------------------------------------------- Address 15: Airbags (J234) Labels:| 5Q0-959-655.clb Part No SW: 5Q0 959 655 N HW: 5Q0 959 655 N Component: AirbagVW20 011 0361 Serial number: 003M2R043PZZ Coding: 98CCC0000C0000005C5400CA00C800000065 Shop #: WSC 06314 790 00021 ASAM Dataset: EV_AirbaVW20SMEVW37X 002126 ROD: EV_AirbaVW20SMEVW37X.rod VCID: 4BC06F39D347A99F3B9-801E Side Sensor Driver Front: Subsystem 1 - Part No SW: ----------- HW: 480 002 111 13 Component: SideSensor_Df 001 0887 Serial number: 35767000000B182C3E0- Coding: 2D2D2D Side Sensor Passenger Front: Subsystem 2 - Part No SW: ----------- HW: 480 002 111 13 Component: SideSensor_Pf 001 0887 Serial number: 35867000000B172C3E0- Coding: 2D2D2D Side Sensor Driver Rear: Subsystem 3 - Part No SW: ----------- HW: 480 401 911 13 Component: SideSensor_Dr 001 6149 Serial number: 3516502A51230BB280E3 Coding: 2D2D2D Side Sensor Passenger Rear: Subsystem 4 - Part No SW: ----------- HW: 480 401 911 13 Component: SideSensor_Pr 001 6149 Serial number: 3526502C91118A3202A$ Coding: 2D2D2D Front Sensor Driver: Subsystem 5 - Part No SW: ----------- HW: 480 400 410 13 Component: FrontSensor_D 001 6149 Serial number: 3556502BB1142C8370CC Coding: 2D2D2D Pedestrian Protection Driver: Subsystem 6 - Part No SW: ----------- HW: 480 400 911 13 Component: PedP_Sensor_D 001 6149 Serial number: 2286502AF1118A34A259 Coding: 2D2D2D Pedestrian Protection Passenger: Subsystem 7 - Part No SW: ----------- HW: 480 400 911 13 Component: PedP_Sensor_P 001 6149 Serial number: 22965029F1118A3283FG Coding: 2D2D2D Pedestrian Protection Center: Subsystem 8 - Part No SW: ----------- HW: 480 400 911 13 Component: PedP_Sensor_C 001 6149 Serial number: 2306502B11118A3162EY Coding: 2D2D2D No fault code found. ------------------------------------------------------------------------------- Address 16: Steering wheel (J527) Labels:| 5Q0-953-549.clb Part No SW: 8V0 953 521 BM HW: 5Q0 953 549 C Component: Lenks. Modul 002 0110 Revision: -------- Serial number: 19111304401009 Coding: 8408 Shop #: WSC 06314 790 00021 ASAM Dataset: EV_SMLSKLOMQB 017001 ROD: EV_SMLSKLOMQB_012_AU37.rod VCID: 06569E0D88A594F7A47-8052 No fault code found. ------------------------------------------------------------------------------- Address 17: Instruments (J285) Labels:| 5G0-920-XXX-17.clb-SRI3 Part No SW: 8V0 920 970 N HW: 8V0 920 970 N Component: KOMBI H03 2220 Coding: 278509002B8046000100BA00100000 Shop #: WSC 06314 790 00021 ASAM Dataset: EV_DashBoardVDDMQBAB 008031 ROD: EV_DashBoardVDDMQBAB_008_VW37.rod VCID: 47C85309CF2F4DFF1F1-8012 No fault code found. ------------------------------------------------------------------------------- Address 19: CAN Gateway (J533) Labels:| 5Q0-907-530-V1.clb Part No SW: 5Q0 907 530 Q HW: 5Q0 907 530 F Component: GW MQB High 125 1164 Revision: -------- Serial number: 0001277863 Coding: 030100040B0876005B000248080B00000001000000000000000000000000 Shop #: WSC 06314 790 00021 ASAM Dataset: EV_GatewLear 010015 ROD: EV_GatewLear_010.rod VCID: 3FD84BE997FF053FA71-806A Alternator: Multi Function Steering Wheel Control Module: Subsystem 2 - Part No SW: 8U0 951 528 A HW: 8U0 951 528 A Component: E221 - MFL H02 0014 Serial number: 25 10 2013 D0337903 Battery Monitoring Control Module: Subsystem 3 - Part No SW: 5Q0 915 181 E HW: 5Q0 915 181 E Component: J367-BDMHella H03 8043 Serial number: 5066051803 No fault code found. ------------------------------------------------------------------------------- Address 42: Door Elect, Driver (J386) Labels:| 5QX-959-X93-42.clb Part No SW: 5Q0 959 593 B HW: 5Q0 959 593 B Component: TSG FS 020 0025 Serial number: 11111306071280 Coding: 00108E204001040000001002 Shop #: WSC 06314 790 00021 ASAM Dataset: EV_DCUDriveSideEWMAXKLO 006003 ROD: EV_DCUDriveSideEWMAXCONT.rod VCID: 40DA4815EA017AC7DEB-8014 No fault code found. ------------------------------------------------------------------------------- Address 44: Steering Assist (J500) Labels:| 5Q0-909-144.clb Part No SW: 5Q0 909 144 P HW: 5Q0 909 144 P Component: EPS_MQB_ZFLS 122 1043 Coding: 8103 Shop #: WSC 06314 790 00021 ASAM Dataset: EV_SteerAssisMQB 010031 ROD: EV_SteerAssisMQB_010.rod VCID: 41DC4D11E10B73CFD15-8014 No fault code found. ------------------------------------------------------------------------------- Address 52: Door Elect, Pass. (J387) Labels:| 5QX-959-X92-52.clb Part No SW: 5Q0 959 592 B HW: 5Q0 959 592 B Component: TSG BFS 020 0025 Serial number: 13111302091525 Coding: 001086204001040000001002 Shop #: WSC 06314 790 00021 ASAM Dataset: EV_DCUPasseSideEWMAXKLO 006003 ROD: EV_DCUPasseSideEWMAXCONT.rod VCID: 3FD84BE997FF053FA71-806A No fault code found. ------------------------------------------------------------------------------- Address 55: Headlight Range (J431) Labels:| 5Q0-907-357.clb Part No SW: 5Q0 907 357 HW: 6R0 907 357 A Component: LWR-ECU 005 0080 Revision: -------- Serial number: -------------- Coding: 019C000001000000 Shop #: WSC 06314 790 00021 ASAM Dataset: EV_HeadlRegulVWLWRMQB 001110 ROD: EV_HeadlRegulVWLWRMQB.rod VCID: 75B4E9C1E5438F6FBDD-8020 No fault code found. ------------------------------------------------------------------------------- Address 5F: Information Electr. (J794) Labels:| 8V0-035-MIB-STD1.clb Part No SW: 8V0 035 874 B HW: 8V0 035 874 B Component: MU-S-ND-ER 040 0420 Serial number: A7F02411132757 Coding: 01730301FF00000021111101000A00002F0001460100010006 Shop #: WSC 06314 790 00021 ASAM Dataset: EV_MUStd4CPASE 002018 ROD: EV_MUStd4CPASE_VW37.rod VCID: 3B203FF983E7191F8B9-806E Display unit 1 for multimedia system: Subsystem 1 - Part No SW: 8V0 919 603 B HW: 8V0 919 603 B Component: DU Std H48 0013 Serial number: AUZ8Z9DM700NFR Multimedia Operating Unit: Subsystem 2 - Part No SW: 8V0 919 614 B HW: 8V0 919 614 B Component: ControlUnit_B H33 0037 Serial number: C1000003101300020047 No fault code found. ------------------------------------------------------------------------------- Address BB: Door Rear Drv (J388) Labels:* None Part No SW: 5Q0 959 595 B HW: 5Q0 959 595 B Component: TSG HFS 020 0025 Serial number: 04111303110194 Coding: 000086204001040000001002 Shop #: WSC 06314 790 00021 ASAM Dataset: EV_DCURearDriveMAXKLO 006003 ROD: EV_DCURearDriveMAXCONT.rod VCID: 42DE421DE40D68D7C8F-8016 No fault code found. ------------------------------------------------------------------------------- Address BC: Door Rear Pass (J389) Labels:* None Part No SW: 5Q0 959 595 B HW: 5Q0 959 595 B Component: TSG HBFS 020 0025 Serial number: 04111306070192 Coding: 000086204001040000001002 Shop #: WSC 06314 790 00021 ASAM Dataset: EV_DCURearPasseMAXKLO 006003 ROD: EV_DCURearPasseMAXCONT.rod VCID: 42DE421DE40D68D7C8F-8016 No fault code found. 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Why use it anyway ?

Before you set off(start moving) just press the accelerator pedal a bit and press down on the button(the PB will release!), then engage the clutch(biting point) and away you go, easy!

I do it that way ALL the time and it's become a natural part of my driving now
 
I been teaching the partner to drive in it and it was easier for her as plans on taking her test in it too.

The method you mentioned is how I use it currently with the issue on going. Just an added pain for a new driver
 
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I been teaching the partner to drive in it and it was easier for her as plans on taking her test in it too.

The method you mentioned is how I use it currently with the issue on going. Just an added pain for a new driver

Oh right, sorry i cant help with your problem then regards the auto release.