Hi,
I fitted towbar 5G9 803 881 F and other parts. Installation checked.
Does anyone know why led for release hitch doesn't work? Wrong coding? In VCDS no errors.
On the photos I showed what I mean.

Below photos and autoscan.

BR
Pumpkin








Code:
Tuesday,24,March,2020,18:55:56:00732
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
VCDS Version: 19.6.2.2 (x64)  HEX-NET CB: 0.4508.4
Data version: 20200210 DS308.0
www.Ross-Tech.com


VIN: WVWZZZAUZJP509107   License Plate: WR7738W
Mileage: 31273km-19432mi   Repair Order: 



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type: AU-VW37 (3Q0)
Scan: 01 02 03 05 08 09 10 13 15 16 17 19 22 29 2B 36 39 3C 42 44
          4B 52 5F 69 6C A5 D6 D7

VIN: WVWZZZAUZJP509107   Mileage: 31273km-19432miles

01-Engine -- Status: OK 0000
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
10-Park/Steer Assist -- Status: OK 0000
13-Auto Dist. Reg -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
22-AWD -- Status: OK 0000
29-Left Light -- Status: OK 0000
2B-Steer. Col. Lock -- Status: OK 0000
36-Seat Mem. Drvr -- Status: OK 0000
39-Right Light -- Status: OK 0000
3C-Lane Change -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
4B-Multifunc. Module -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
5F-Information Electr. -- Status: OK 0000
69-Trailer -- Status: OK 0000
6C-Back-up Cam. -- Status: Malfunction 0010
A5-Frt Sens. Drv. Assist -- Status: OK 0000
D6-Light Ctrl Left 2 -- Status: OK 0000
D7-Light Ctrl Right 2 -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-DGCA)       Labels:. 04L-907-309-V1.clb
   Part No SW: 04L 906 026 EM    HW: 04L 907 309 R
   Component: R4 2.0l TDI   H24 4027  
   Revision: B5H24---    
   Coding: 01250032037605083000
   Shop #: WSC 45711 002 104857
   ASAM Dataset: EV_ECM20TDI01104L906026EM 004003
   ROD: EV_ECM20TDI01104L906026LP.rod
   VCID: F9BA68F278DB0E8762-80AC

No fault code found.
Readiness: 0 0 0 0 0 

-------------------------------------------------------------------------------
Address 02: Auto Trans (J743)       Labels:. 0BH-927-711.clb
   Part No SW: 0GC 300 011 N    HW: 0GC 927 711 G
   Component: GSG DQ381     H06 0708  
   Revision: 00H06V07    
   Coding: 0014
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_TCMDQ381061 001
   ROD: EV_TCMDQ381061_VW37.rod
   VCID: AD128CA2FC136227BE-80F8

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels: 5Q0-907-379-IPB-V1.clb
   Part No SW: 5Q0 614 517 CF    HW: 5Q0 614 517 AD
   Component: ESC           H25 0513  
   Revision: 00000000    Serial number: 61657000000956
   Coding: 43FA62A1342009754778070040CA29C2462C90E2E002947D38625078E289430000010312121212B435351919323200
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_Brake1UDSContiMK100IPB 036010
   ROD: EV_Brake1UDSContiMK100IPB_036_VW37.rod
   VCID: F7BE6ECA4ECF18F714-80A2

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J518)       Labels:| 5Q0-959-435.clb
   Part No SW: 5Q0 959 435 C    HW: 5Q0 959 435 
   Component: VWKESSYMQB    021 0803  
   Revision: 00021000    Serial number: 0443027861
   Coding: 032C0C
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_KessyHellaMQBAB 002020
   ROD: EV_KessyHellaMQBAB_002.rod
   VCID: BC34B1E63769FBAF39-80E8

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels:| 5G0-907-044.clb
   Part No SW: 5G0 907 044 CF    HW: 5G0 907 044 CF
   Component: Climatronic   H04 1801  
   Revision: 00001K08    
   Coding: 0202010420211001100500000010102A
   Shop #: WSC 00028 028 00068
   ASAM Dataset: EV_ACClimaBHBVW37X 006145
   ROD: EV_ACClimaBHBVW37X_006.rod
   VCID: ED924CA23C93A227FE-80B8

   Fresh Air Blower Front: 

   Geber für Kältemitteldruck/Kältemitteltemperatur: 

   Air quality sensor: 

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 5Q0-937-08X-V2.clb
   Part No SW: 5Q0 937 086 BL    HW: 5Q0 937 086 BG
   Component: BCM PQ37BOSCH 034 0242  
   Revision: --------    Serial number: 8658080617008P
   Shop #: WSC 00028 028 00202
   ASAM Dataset: EV_BodyContrModul1UDSBosc 018001
   ROD: EV_BCMBOSCH_018.rod
   VCID: 8542140204237A6716-80D0

   Control Unit For Wiper Motor: 
   Subsystem 1 - Part No SW: 5G1 955 119 A    HW: 5G1 955 119 A  Labels: 5QX-955-119-V1.CLB
   Component: WWS    170512  043 0551 
   Serial number:         170530053838
   Coding: 0E4DDD

   Rain Light Recognition Sensor: 
   Subsystem 2 - Part No SW: 5Q0 955 547 B    HW: 5Q0 955 547 B  Labels: 5Q0-955-547.CLB
   Component: RLHS  042 0105 
   Serial number: S3Y17M06D13H11M03S00
   Coding: 00A8DD

   Sensor For Anti Theft Alarm System: 
   Subsystem 3 - Part No SW: 5Q0 951 172     HW: 5Q0 951 172 
   Component: Sensor, DWA  005 0316 
   Serial number: 000000000ZY171383C1F

   Alarm horn: 
   Subsystem 4 - Part No SW: 5Q0 951 605 A    HW: 5Q0 951 605 A
   Component: Sirene, DWA  005 0314 
   Serial number: 00000000000069795533

   Relative Air Humidity Interior Sender: 

No fault code found.

-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J791)       Labels:| 5Q0-919-298.clb
   Part No SW: 5QA 919 298 C    HW: 5QA 919 298 A
   Component: PLA 3.0 12KH07 0045  
   Serial number: 000308417616344
   Coding: 0271167A51
   Shop #: WSC 45711 002 104857
   ASAM Dataset: EV_EPHVA2CAU3700000 009037
   ROD: EV_EPHVA2CAU3700000.rod
   VCID: D0ECF5568BE16FCFF5-8084

No fault code found.

-------------------------------------------------------------------------------
Address 13: Auto Dist. Reg (J428)       Labels:| 3Q0-907-572.clb
   Part No SW: 5Q0 907 572 J    HW: 3QF 907 572 
   Component: ACC BOSCH MQB H10 0654  
   Coding: 331D67E995FFCF28949C810580400600000000000000000000
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_ACCBOSCHVW416 002006
   ROD: EV_ACCBOSCHVW416_002_VW37.rod
   VCID: BE30BBEE2175E9BF17-80EA

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5Q0-959-655.clb
   Part No SW: 5Q0 959 655 BH    HW: 5Q0 959 655 BH
   Component: AirbagVW21    005 0336  
   Serial number: 003VVR31DP9E
   Coding: 98CCC000000000005C0000CF000800000065
   Shop #: WSC 00028 028 00060
   ASAM Dataset: EV_AirbaVW20SMEVW37X 002158
   ROD: EV_AirbaVW20SMEVW37X.rod
   VCID: 875E1E0A3E2F687764-80D2

   Side Sensor Driver Front: 
   Subsystem 1 - Part No SW: -----------    HW: 480 001 106 17
   Component: SideSensor_Df  001 0887 
   Serial number: 357000000004E665F42S
   Coding: 2D2D2D

   Side Sensor Passenger Front: 
   Subsystem 2 - Part No SW: -----------    HW: 480 001 006 17
   Component: SideSensor_Pf  001 0887 
   Serial number: 3580000000017B7D452N
   Coding: 2D2D2D

   Side Sensor Driver Rear: 
   Subsystem 3 - Part No SW: -----------    HW: 480 401 306 17
   Component: SideSensor_Dr  000 6149 
   Serial number: 3510001BD260B432223Q
   Coding: 2D2D2D

   Side Sensor Passenger Rear: 
   Subsystem 4 - Part No SW: -----------    HW: 480 401 306 17
   Component: SideSensor_Pr  000 6149 
   Serial number: 3520001C72522C16262R
   Coding: 2D2D2D

   Front Sensor Driver: 
   Subsystem 5 - Part No SW: -----------    HW: 480 401 206 17
   Component: FrontSensor_D  000 6149 
   Serial number: 3550001B1260B43331FV
   Coding: 2D2D2D

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J524)       Labels:| 5Q0-953-549.clb
   Part No SW: 5Q0 953 521 AT    HW: 5Q0 953 569 A
   Component: Lenks.Modul   075 0235  
   Revision: FF033033    Serial number: 20170609300212
   Coding: 0410
   Shop #: WSC 00028 028 00068
   ASAM Dataset: EV_SMLSVALEOMQB 001016
   ROD: EV_SMLSVALEOMQB.rod
   VCID: 844409060F19436F01-80D0

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5G0-920-XXX-17.clb-SRI3
   Part No SW: 5G1 920 751 C    HW: 5G1 920 751 C
   Component: KOMBI         302 0310  
   Coding: 07A4201B6F8C000801882B0B5401000000000000
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_DashBoardVDDMQBAB 009060
   ROD: EV_DashBoardVDDMQBAB_009_VW37.rod
   VCID: A81C7DB6D3F1470F4D-80FC

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:| 3Q0-907-530-V1.clb
   Part No SW: 3Q0 907 530 G    HW: 3Q0 907 530 C
   Component: GW MQB High   518 5304  
   Serial number: 03061710520866
   Coding: 0B0100345F086800DB00225A1E0F00010001070000000000000000000000
   Shop #: WSC 64239 001 1048576
   ASAM Dataset: EV_GatewNF 013023
   ROD: EV_GatewNF.rod
   VCID: B3269ADA1A3734D7E8-80E6

   Alternator: 

   Multi Function Steering Wheel Control Module: 
   Subsystem 2 - Part No SW: 5G0 959 442 K    HW: 5G0 959 442 K  Labels: 3C8-959-537.CLB
   Component: E221__MFL-DC1  H17 0040 
   Serial number: 46170001521250107233
   Coding: 2DFFFF

   Battery Monitoring Control Module: 
   Subsystem 3 - Part No SW: 5Q0 915 181 K    HW: 5Q0 915 181 K
   Component: J367-BDMHella  H10 9070 
   Serial number: 5716414104          

   Power Converter DC AC: 
   Subsystem 4 - Part No SW: 5Q0 907 155     HW: 5Q0 907 155 
   Component: U13DCAC  H25 0790 
   Serial number: 0003589             

No fault code found.

-------------------------------------------------------------------------------
Address 22: AWD (J492)       Labels:* 0CQ-907-554.clb
   Part No SW: 0CQ 907 554 H    HW: 0CQ 525 130 
   Component: Haldex4Motion H52 7083  
   Serial number: HA1-00028.04.17
   Coding: 0001
   Shop #: WSC 00028 028 00068
   ASAM Dataset: EV_AllWheelContrHA1VW37X 004013
   ROD: EV_AllWheelContrHA1VW37X_004.rod
   VCID: CAD8E73E6DBD551FBB-809E

No fault code found.

-------------------------------------------------------------------------------
Address 29: Left Light (J1018)       Labels: 8V0-907-399.clb
   Part No SW: 8V0 907 399 D    HW: 8V0 907 399 D
   Component: LCM_MLBevoH08 0014  
   ASAM Dataset: EV_LCMLeftHELLAAU736 001012
   ROD: EV_LCMLeftHELLAAU736_VW37.rod
   VCID: C7DEDE0A7EAFA877A4-8092

No fault code found.

-------------------------------------------------------------------------------
Address 2B: Steer. Col. Lock (J764)       Labels:* 5Q0-905-861.clb
   Part No SW: 5Q0 905 861 A    HW: 5Q0 905 861 A
   Component: ELV-MQBA      H01 0120  
   Revision: 00000000    Serial number: 17000154921010
   Coding: 5D00000000000000
   Shop #: WSC 00028 028 00068
   ASAM Dataset: EV_ELVMarquMQB 004111
   ROD: EV_ELVMarquMQB.rod
   VCID: B42499C61F3933EFF1-80E0

No fault code found.

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr (J810)       Labels:* None
   Part No SW: 3Q0 959 760 B    HW: 3Q0 959 760 B
   Component: Sitzmemory    H05 0022  
   Serial number: Y0006QE522662
   Coding: 001000020000050081C280808080000000008181000000F400
   Shop #: WSC 01730 666 28888
   ASAM Dataset: EV_SeatMemorDriveSide 002021
   ROD: EV_SeatMemorDriveSide.rod
   VCID: BA38B7FE3D5DC59F2B-80EE

No fault code found.

-------------------------------------------------------------------------------
Address 39: Right Light (J1023)       Labels: 8V0-907-399.clb
   Part No SW: 8V0 907 399 D    HW: 8V0 907 399 D
   Component: LCM_MLBevoH08 0014  
   ASAM Dataset: EV_LCMRightHELLAAU736 001012
   ROD: EV_LCMLeftHELLAAU736_VW37.rod
   VCID: C7DEDE0A7EAFA877A4-8092

No fault code found.

-------------------------------------------------------------------------------
Address 3C: Lane Change (J1086)       Labels:| 5Q0-907-686.clb
   Part No SW: 5Q0 907 686 B    HW: 5Q0 907 686 B
   Component: HRE_Master    H12 0071  
   Serial number: 0403694986
   Coding: 02032103
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_HREntryHella 001028
   ROD: EV_HREntryHella_VW37.rod
   VCID: BC34B1E63769FBAF39-80E8

   Lane Change Assistant 2: 
   Subsystem 1 - Part No SW: 5Q0 907 685 B    HW: 5Q0 907 685 B
   Component: HRE_Slave  H12 0071 
   Serial number: 0403543451          
   Coding: 020321

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:| 5QX-959-X93-42.clb
   Part No SW: 5Q4 959 593 E    HW: 5Q4 959 593 B
   Component: TSG FS        011 0032  
   Serial number: 0000260307237 
   Coding: 003B1220DE00020000001000
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_DCUDriveSideEWMAXCONT 006001
   ROD: EV_DCUDriveSideEWMAXCONT.rod
   VCID: C7DEDE0A7EAFA877A4-8092

   Drivers Door Rear Control Module: 
   Subsystem 1 - Part No SW: 5Q4 959 811 D    HW: 5Q4 959 811 D  Labels: 5QX-959-81X-V1.CLB
   Component: Fond FHSG DRV  007 0002 
   Serial number: 00000000000005904935
   Coding: 110000

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist (J500)       Labels:| 5Q0-909-144.clb
   Part No SW: 5Q0 909 144 T    HW: 5Q0 909 144 R
   Component: EPS_MQB_ZFLS  129 1072  
   Coding: 9307
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_SteerAssisMQB 013144
   ROD: EV_SteerAssisMQB_013.rod
   VCID: C5C2D40244A3BA6756-8090

No fault code found.

-------------------------------------------------------------------------------
Address 4B: Multifunc. Module (J745)       Labels:| 3Q0-907-338-V1.clb
   Part No SW: 3Q0 907 338     HW: 3Q0 907 338 
   Component: FCM MQB Low   002 0286  
   Serial number: 29051710521833
   Coding: 000000050100195200100F40020000000000000000000000000000000000
   Shop #: WSC 00028 028 00068
   ASAM Dataset: EV_MultiModulContiVW48X 001010
   ROD: EV_MultiModulContiVW48X_001.rod
   VCID: F2A85FDE25AD7DDF23-80A6

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:| 5QX-959-X92-52.clb
   Part No SW: 5Q4 959 592 E    HW: 5Q4 959 592 B
   Component: TSG BFS       011 0032  
   Serial number: 0000262773063 
   Coding: 003B1020DE00020000801000
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_DCUPasseSideEWMAXCONT 006001
   ROD: EV_DCUPasseSideEWMAXCONT.rod
   VCID: C6C0D30E79A5B17F5F-8092

   Passengers Rear Door Control Module: 
   Subsystem 1 - Part No SW: 5Q4 959 812 D    HW: 5Q4 959 812 D  Labels: 5QX-959-81X-V1.CLB
   Component: Fond FHSG PSG  007 0002 
   Serial number: 00000000000005991910
   Coding: 090000

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:| 5G0-035-MIB-STD2.clb
   Part No SW: 3Q0 035 824 C    HW: 3Q0 035 824 C
   Component: MU-S--ER      H41 0449  
   Serial number: VWZAZ2T1402668
   Coding: 02731200FF0000005111000100080A001F0508C40120050003
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_MUStd4CTSAT 001022
   ROD: EV_MUStd4CTSAT_VW37.rod
   VCID: AD128CA2FC136227BE-80F8

   Operating And Display Unit 1: 
   Subsystem 1 - Part No SW: 5G6 919 605 A    HW: 5G6 919 605 A
   Component: ABT_Std-2  H50 8130 
   Serial number: VWZ6ZJT1640281      

No fault code found.

-------------------------------------------------------------------------------
Address 69: Trailer (J345)       Labels:| 5Q0-907-383.clb
   Part No SW: 5Q0 907 383 N    HW: 5Q0 907 383 N
   Component: Anhaenger     H27 0264  
   Revision: 8A001003    Serial number: 0509730500
   Coding: 0100000202000000
   Shop #: WSC 40431 004 104857
   ASAM Dataset: EV_TrailFunctGener2Hella 001008
   ROD: EV_TrailFunctGener2Hella_VW26.rod
   VCID: C2C8CF1E558D8D5F73-8096

No fault code found.

-------------------------------------------------------------------------------
Address 6C: Back-up Cam. (J772)       Labels:| 5Q0-980-556.clb
   Part No SW: 5Q0 980 556 B    HW: 5Q0 980 556 B
   Component: RVC Compact   H12 0231  
   Coding: 01840201A3002017000040
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_CamSysRVRVCPANAMQBAB 006009
   ROD: EV_CamSysRVRVCPANAMQBAB_006_VW37.rod
   VCID: B93AA8F2385BCE8722-80EC

1 Fault Found:
10489856 - No Basic Setting 
          B2010 00 [009] - -
          [RearView system not calibrated]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 5
                    Fault Frequency: 1
                    Reset counter: 100
                    Mileage: 31273 km
                    Date: 2020.03.24
                    Time: 18:43:49

                    passive


-------------------------------------------------------------------------------
Address A5: Frt Sens. Drv. Assist (R242)       Labels:| 3Q0-980-65X-A5.clb
   Part No SW: 3Q0 980 654 H    HW: 3Q0 980 654 A
   Component: MQB_B_MFK     H08 0272  
   Serial number: 07081712P22956
   Coding: 000307020000040100262054C156890090000E200020
   Shop #: WSC 12345 123 12345
   ASAM Dataset: EV_MFKBoschMQBB 001001
   ROD: EV_MFKBoschMQBB_001_VW36.rod
   VCID: BC34B1E63769FBAF39-80E8

No fault code found.

-------------------------------------------------------------------------------
Address D6: Light Ctrl Left 2 (A31)       Labels: 7PP-941-572.clb
   Part No SW: 7P5 941 572 A    HW: 7P5 941 572 A
   Component: LED1L         H06 0002  
   ASAM Dataset: EV_LEDMinMaxL_KEBODAVW481 001003
   ROD: EV_LEDMinMaxL_KEBODAVW481.rod
   VCID: B93AA8F2385BCE8722-80EC

No fault code found.

-------------------------------------------------------------------------------
Address D7: Light Ctrl Right 2 (A27)       Labels: 7PP-941-572.clb
   Part No SW: 7P5 941 572 A    HW: 7P5 941 572 A
   Component: LED1R         H06 0002  
   ASAM Dataset: EV_LEDMinMaxR_KEBODAVW481 001003
   ROD: EV_LEDMinMaxRKEBODVW481.rod
   VCID: B93AA8F2385BCE8722-80EC

No fault code found.

End----------(Elapsed Time: 02:04, VBatt start/end: 12.4V/12.4V)-----------