Loss of ability to adapt target voltage for alternator 2022 Tiguan

[MattR72]

So with the current update of VCDS I lost the ability to control the target voltage of my alternator's voltage regulator. Adaptation IDE01860-Generator specified voltage value variable. I originally saw this as a value of 14.4v and now it will not let me confirm the value. I am not sure if this belongs in repairs or vcds issues.

Thank you,
Matt

Sunday,09,March,2025,17:18:07:25673
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 11 x64
VCDS Version: 25.3.0.3 (x64)  HEX-NET2 CB: 0.4660.5
Data version: 20250301 DS365.0
www.Ross-Tech.com


VIN: 3VV0B7AX6NM117943   License Plate:



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


Chassis Type: AX-VW37 (3Q0)
Scan: 01 02 03 05 08 09 13 15 17 19 22 42 44 52 75 BB BC

VIN: 3VV0B7AX6NM117943   Mileage: 57121km-35493miles

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
13-Auto Dist. Reg -- Status: OK 0000
15-Airbags -- Status: Malfunction 0010
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
22-AWD -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
75-Telematics -- Status: Malfunction 0010
BB-Door Rear Drv -- Status: Cannot be reached 0100
BC-Door Rear Pass -- Status: Cannot be reached 0100
-------------------------------------------------------------------------------
Address 01: Engine (J623-DTEA)       Labels:. 06L-907-115-V1.clb
   Part No SW: 83A 907 115 G    HW: 06L 907 309 B
   Component: R4 2.0l TFSI  H31 0001 
   Revision: 1DH31000    CVN: 03EA7ABA
   Coding: 012A00122426012F34000000000000000000000000000000
   Shop #: WSC 00066 790 00449
   ASAM Dataset: EV_ECM20TFS01183A907115G 001002
   ROD: EV_ECM20TFS01183A907115G.rod
   VCID: 2A066C242C796DCAF14-807E
   VINID: 0E698048746819E7410472440C59C36CAF

No fault code found.
Readiness: 1000 0000

-------------------------------------------------------------------------------
Address 02: Auto Trans (J217)       Labels: 09P-927-749-V1.clb
   Part No SW: 09G 927 158 GD    HW: 09G 927 158
   Component: AISIN AQ8     206 3820 
   CVN: 1825B020
   Coding: 0000000100000000000000000000000000000000
   Shop #: WSC 00066 790 00444
   ASAM Dataset: EV_TCMAQ450031 001001
   ROD: EV_TCMAQ450031_VW37.rod
   VCID: 7BA8996093632442DA2-802E

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels: 5Q0-907-379-IPB-V1.clb
   Part No SW: 5Q0 614 517 GA    HW: 5Q0 614 517 BN
   Component: ESC           H35 0114 
   Revision: 00000000    Serial number: 50702000001382
   Coding: 0BFA6BA450211B73C5800304A2C649D0D60AD8A3C045927410415558D20A4A0B00402F641A1B1311145E833B485266E4
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_Brake1UDSContiMK100IPB 049015
   ROD: EV_Brake1UDSContiMK100IPB_049_VW37.rod
   VCID: 76BE8854A841792AA5C-8022

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J518)       Labels:| 5Q0-959-435.clb
   Part No SW: 3Q0 959 435 Q    HW: 3Q0 959 435 Q
   Component: VWKESSYMQB    037 1400 
   Revision: 00037000    Serial number: 0595194045 Dataset Number: V03935340QJ 0001
   Coding: 132C0C0723
   Shop #: WSC 00066 790 00444
   ASAM Dataset: EV_KessyHellaMQBAB 004055
   ROD: EV_KessyHellaMQBAB_004_VW37.rod
   VCID: 48C236AC9235BFDA070-801C

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (E87)       Labels:| 5G0-907-426.clb
   Part No SW: 5NN 907 426 G    HW: 5NN 907 426 G
   Component: AC Manuell el H36 5001 
   Revision: 20K02000    Serial number: 00000D00777277
   Coding: 00020004200110001000000000000016
   Shop #: WSC 00066 790 00449
   ASAM Dataset: EV_ACManuePrehVW37X 002028
   ROD: EV_ACManuePrehVW37X_002_VW37.rod
   VCID: 54FA12DC5E7D0B3A7B8-8000

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 5Q0-937-08X-V2.clb
   Part No SW: 5Q0 937 085 CJ    HW: 5Q0 937 085 CJ
   Component: BCM MQBAB MNA H44 0511 
   Serial number: 2134057002     Dataset Number: V03935372NZ 0001
   Coding: 000000000000000000000000000000000000000000000000000000000000
   Shop #: WSC 00066 790 00153
   ASAM Dataset: EV_BCMMQB 022001
   ROD: EV_BCMBOSCH_022_VW27.rod
   VCID: 0358E180EB935C82922-8056

   Wiper motor control module:
   Subsystem 1 - Part No SW: 5NN 955 119 B    HW: 5NN 955 119   Labels: 1KX-955-119.CLB
   Component: 326 LL 220330  041 0374
   Serial number: 22032521007560     
   Coding: 0E4DDD

   Steering Column Switch:
   Subsystem 2 - Part No SW: 5Q1 953 521 KF    HW: 5Q1 953 569 H
   Component: Lenks.Modul  H04 0190
   Serial number: 0300060520220C201053

No fault code found.

-------------------------------------------------------------------------------
Address 13: Auto Dist. Reg (J428)       Labels:| 2Q0-907-572.clb
   Part No SW: 2Q0 907 572 AA    HW: 2Q0 907 572 D
   Component: ACCCONTIMQB   H09 0396 
   Dataset Number: V03935351TC 0001
   Coding: 3200008118FF8728749C810500409700000000000000000014
   Shop #: WSC 00066 790 00153
   ASAM Dataset: EV_ACCMRRCONTIVW376 003018
   ROD: EV_ACCMRRCONTIVW376_003_VW37.rod
   VCID: 73B8B140BB336C02822-8026

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5Q0-959-655.clb
   Part No SW: 5Q0 959 655 CB    HW: 5Q0 959 655 CB
   Component: AirbagVW21    008 0421 
   Serial number: 003J4M08LA23 Dataset Number: V03935355MG 0001
   Coding: 8CCCFC00000000005000001AC24800000065
   Shop #: WSC 00066 790 00444
   ASAM Dataset: EV_AirbaVW20SMEVW37X 002166
   ROD: EV_AirbaVW20SMEVW37X_VW37.rod
   VCID: 0256E484F489558A994-8056

   Seat occupied recognition passenger side:
   Subsystem 1 - Part No SW: 4M0 959 339 B    HW: 4M0 959 339 B
   Component: BF-Gewichtss.  H16 0022
   Serial number: IBH00000000000I3ZU36
   Coding: 303552

   Crash sensor for side airbag: driver side:
   Subsystem 2 - Part No SW: -----------    HW: 480 001 012 21
   Component: SideSensor_Df  001 0887
   Serial number: 35700000000C2A74AC5Y
   Coding: 2D2D2D

   Crash sensor for side airbag: passenger side:
   Subsystem 3 - Part No SW: -----------    HW: 480 001 412 21
   Component: SideSensor_Pf  001 0887
   Serial number: 358000000008C1D4AC5
   Coding: 2D2D2D

   Rear Side Airbag Crash Sensor (on driver's side):
   Subsystem 4 - Part No SW: -----------    HW: 480 401 104 22
   Component: SideSensor_Dr  003 6149
   Serial number: 3510001C707ABD049502
   Coding: 2D2D2D

   Passenger side rear thorax airbag crash sensor:
   Subsystem 5 - Part No SW: -----------    HW: 480 401 603 22
   Component: SideSensor_Pr  005 6149
   Serial number: 35200019CC7AB0C61A2H
   Coding: 2D2D2D

   Crash sensor for front airbag: driver side:
   Subsystem 6 - Part No SW: -----------    HW: 480 402 402 22
   Component: FrontSensor_D  005 6149
   Serial number: 3550001B4C7474B6CB5M
   Coding: 2D2D2D

   Crash sensor for front airbag: passenger side:
   Subsystem 7 - Part No SW: -----------    HW: 480 402 402 22
   Component: FrontSensor_P  005 6149
   Serial number: 3560001B4C7474B3BA3G
   Coding: 2D2D2D

1 Fault Found:
9439771 - Front Passenger's Side Airbag Igniter
          B100A 1B [10001001] - Resistance Too High
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 57090 km
                    Date: 2025.03.09
                    Time: 07:41:14


-------------------------------------------------------------------------------
Address 17: Instruments
Cannot be reached

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:| 3Q0-907-530-V1.clb
   Part No SW: 3Q0 907 530 AL    HW: 3Q0 907 530 E
   Component: GW MQB High   524 5463 
   Serial number: 10042200842014 Dataset Number: V03935366KW 0001
   Coding: 030500347F085B00FB0320481E0F00010001070000000000000000000000
   Shop #: WSC 00066 790 00153
   GVL: 01C03C0000000400400C80008000C00000000000000000000000000000000000
   ASAM Dataset: EV_GatewNF 013026
   ROD: EV_GatewNF_VW37.rod
   VCID: 79A48368995F1652C8E-802C

   Generator:
   Component: 5-01-14-01-04 

   Multifunction steering wheel control module:
   Subsystem 2 - Part No SW: 3G0 959 442 AH    HW: 3G0 959 442 AH  Labels: 3C8-959-537.CLB
   Component: E221__MFL-YLG  H50 0500
   Serial number: YLG-0700084102221835
   Coding: 280800

   Battery Monitoring Control Module:
   Subsystem 3 - Part No SW: 5QA 915 181 D    HW: 5QA 915 181 D
   Component: J367-BDMHella  H11 9070
   Serial number: 7241428900         

No fault code found.

-------------------------------------------------------------------------------
Address 22: AWD (-----)       Labels:| 0CQ-907-554-V1.clb
   Part No SW: 5WA 907 554 P    HW: 5WA 525 130
   Component: 4Motion       H65 0724 
   Serial number: HA1-00001.03.22
   Coding: 0101
   Shop #: WSC 00066 790 00449
   ASAM Dataset: EV_AllWheelContrHA1VW37X 005001
   ROD: EV_AllWheelContrHA1VW37X_005.rod
   VCID: 5BE8F9E033A3C442BA2-800E

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:| 5QX-959-X93-42.clb
   Part No SW: 5Q4 959 393 P    HW: 5Q4 959 393 P
   Component: TSG FS        009 0911 
   Serial number: 0000465852117  Dataset Number: V03935346AQ 0001
   Coding: 003013200000048000000000
   Shop #: WSC 00066 790 00153
   ASAM Dataset: EV_DCU2DriveSideMAXHCONT 001005
   ROD: EV_DCU2DriveSideMAXHCONT_VW37.rod
   VCID: 50F21ECC6A65771A5F0-8004

   Rear Driver Side Door Control Module:
   Subsystem 1 - Part No SW: 2Q0 959 407     HW: 2Q0 959 163   Labels: 5QX-959-81X-V1.CLB
   Component: FOND_FHSG_DRV  001 0007
   Serial number: 03020106410904220313
   Coding: 131000

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist (J500)       Labels:| 5Q0-909-144.clb
   Part No SW: 5QM 909 144 C    HW: 5QM 909 144 B
   Component: EPS_MQB_ZFLS  173 1082 
   Dataset Number: V03935333UK 0001
   Coding: 811F0000
   Shop #: WSC 00066 790 00153
   ASAM Dataset: EV_SteerAssisMQB 015157
   ROD: EV_SteerAssisMQB_015.rod
   VCID: 51F41BC8616F7E1250E-8004

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:| 5QX-959-X92-52.clb
   Part No SW: 5Q4 959 392 P    HW: 5Q4 959 392 P
   Component: TSG BFS       009 0911 
   Serial number: 86018211603095 Dataset Number: V03935346AR 0001
   Coding: 003013200000048000000000
   Shop #: WSC 00066 790 00153
   ASAM Dataset: EV_DCU2PasseSideMAXHCONT 001005
   ROD: EV_DCU2PasseSideMAXHCONT_VW37.rod
   VCID: 4FF01DB0775B68E246A-801A

   Rear Passenger Door Control Module:
   Subsystem 1 - Part No SW: 2Q0 959 408     HW: 2Q0 959 164   Labels: 5QX-959-81X-V1.CLB
   Component: FOND_FHSG_PSG  001 0007
   Serial number: 03020118292204220417
   Coding: 0B1000

No fault code found.

-------------------------------------------------------------------------------
Address 75: Telematics (J949)       Labels:* None
   Part No SW: 5WA 035 283     HW: 5WA 035 283
   Component: OCUGen3Low    H10 0302 
   Serial number: 0000000111NVQS0 Dataset Number: V03935357EW 0001
   Coding: 02326020196828008005461160000607
   ASAM Dataset: EV_OCUGen3Low 002039
   ROD: EV_OCUGen3Low_002_VW37.rod
   VCID: 0256E484F489558A994-8056

5 Faults Found:
9458195 - Control Module for Cellular Telephone
          B1052 13 [00001001] - Open Circuit
          [Button Assembly - Interruption]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 40
                    Mileage: 57090 km
                    Date: 2025.03.09
                    Time: 07:41:15

                    Voltage terminal 30: 13.0 V

9457171 - Audio signal output 1
          B14F1 13 [00001001] - Open Circuit
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 40
                    Mileage: 57090 km
                    Date: 2025.03.09
                    Time: 07:41:15

                    Voltage terminal 30: 13.0 V

9455892 - Mute switch radio
          B1049 14 [00001001] - Open or Short to Ground
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 40
                    Mileage: 57090 km
                    Date: 2025.03.09
                    Time: 07:41:15

                    Voltage terminal 30: 13.0 V

9455635 - Microphone 1
          B129B 13 [00001001] - Open Circuit
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 40
                    Mileage: 57090 km
                    Date: 2025.03.09
                    Time: 07:41:15

                    Voltage terminal 30: 13.0 V

12866049 - Databus
          U1123 00 [00001001] - Received Error Message
          [Airbag: Error value received]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 6
                    Fault Frequency: 2
                    Reset counter: 40
                    Mileage: 57090 km
                    Date: 2025.03.09
                    Time: 07:41:13

                    Voltage terminal 30: 13.0 V


End----------(Elapsed Time: 01:30, VBatt start/end: 12.7V/12.7V)-----------
------------------------------6 Faults Found-------------------------------

 

[Dr Sheldon]

I lost the ability to control the target voltage of my alternator's voltage regulator.

Why would you want to mess with that ?


That voltage regulation is likely Engine ECU controlled and dynamic using parameters such as Temperature, Load, SOC and many more. You also risk playing havoc with Start Stop !!

 

[Uwe]

So with the current update of VCDS I lost the ability to control the target voltage of my alternator's voltage regulator. Adaptation IDE01860-Generator specified voltage value variable.

Are you saying it's totally missing from the channel list in the Gateway, or...?

-Uwe-

 

[MattR72]

Dr. Sheldon - I am run LTO batteries. And verifying the charge voltage is important.

Uwe - The channel is showing. However the value changed from 14.4v original. To 10.6v. And will no longer accept changes.

I did some searching at it seems like the standard is 10.6v. But is there a way to tell the voltage regulator in the alternator the target value of 14.2v? I am now reading a maximum of 14.07v with my dmm (digital multimeter).

When I read with vcds I see voltage ranging from 13.6v and 111A of charge output.
Battery state of charge is 12v = 25% and 13.6v = 100%.

And I was getting better fuel economy. Before that field changed to 10.6v.

I'm wondering why I get an out of range error now?

 

[Dr Sheldon]

Dr. Sheldon - I am run LTO batteries. And verifying the charge voltage is important.

Makes no difference to me what you are running, We should concentrate on how the thing was designed to work.

The correct voltage regulation is important to every electrical component in that car, not just the battery.

The channel is showing. However the value changed from 14.4v original. To 10.6v. And will no longer accept changes

We know that some changes are not reversible !! Ouch !!

But is there a way to tell the voltage regulator in the alternator the target value of 14.2v?

Probably a Lin signal from ECU to the Alternator

 

[Uwe]

I am run LTO batteries.

I think you're in uncharted territory.

I am not sure what IDE01860 really does. These cars don't run the alternator at a fixed voltage. The voltage commanded by the gateway depends on battery SoC, engine load, temperature, and the type of battery your gateway thinks you have, plus perhaps some other factor I don't know about.

I don't think there's a setting for LTO batteries.

If I were to speculate I might guess that IDE01860 specifies the backup voltage the alternator will be commanded to produce if the Gateway loses the ability to monitor battery SOC from the sensor that's built into the battery's ground lead...?

If you think this is a problem with version 25.3 vs the previous 24.7, I can PM you a link to the previous version and you can try reverting, but based on what you've written, I rather doubt that's the case.

-Uwe-

 

[MattR72]

Uwe,

Looks like I am unable to edit with VCDS 21.3 and 24.7. Out of range error.

If this is the correct field how did I edit the alternator voltage? From 14.4v to 14.2v?

Sorry if I came off rude. Just trying to figure it out.

Have a good day,
Matt

 

[Uwe]

If this is the correct field how did I edit the alternator voltage? From 14.4v to 14.2v?

I don't know. All I can tell you with any level of confidence is that I just looked at a recently generated map from a 2018 Tiiguan SEL Premium and found:

IDE01860-Generator specified voltage value variable 10.6 V

I'm confident that channel has never been messed with in this vehicle, so 10.6V appears to be the standard value for it. Moreover, this clearly isn't the voltage that the alternator tries to achieve when charging the battery.

-Uwe-

 

[MattR72]

I don't know. All I can tell you with any level of confidence is that I just looked at a recently generated map from a 2018 Tiiguan SEL Premium and found:

IDE01860-Generator specified voltage value variable 10.6 V

I'm confident that channel has never been messed with in this vehicle, so 10.6V appears to be the standard value for it. Moreover, this clearly isn't the voltage that the alternator tries to achieve when charging the battery.

-Uwe-

So my primary question would be what does that channel do?

 

[TTT]

Alternator is in load sharing with the battery, sometimes. For regenerative function, alternator is being told to drop the output voltage, such that the battery gets discharged, e.g. at acceleration, then this voltage goes to 14.x at deceleration, and the battery charged back. Software target on my vehicle is 80% SoC.

 

[Uwe]

Alternator is in load sharing with the battery, sometimes. For regenerative function, alternator is being told to drop the output voltage, such that the battery gets discharged, e.g. at acceleration, then this voltage goes to 14.x at deceleration, and the battery charged back. Software target on my vehicle is 80% SoC.

Plausible theory, that this is the minimum voltage that the alternator should produce when battery SoC is determined to be adequate and the car wants to minimize "drag" from the alternator.

@Matt have you experimented with raising that value incrementally? Try 11.0. 11.5. 12.0 and so on to see what happens.

-Uwe-

 

[MattR72]

@Uwe So I have tried 14.4, 14.2, 10.6, 10.5, 10.7 for values all give me out of range as a result. What makes me thing that IDE01860 is the voltage set point is. 1. IDE01855 is the generator current measurement in the advanced measurements feature. I have searched for more common automotive terms such as alternator, battery voltage, etc. 2. With version 21.3 before I believe it was set to 14.4v (please note this was before my was supported).

 

[Uwe]

With version 21.3 before I believe it was set to 14.4v

I am hard pressed to believe a different version of VCDS would give you different results. And in fact, you said:

Looks like I am unable to edit with VCDS 21.3 and 24.7. Out of range error.

An "out of range" error is the module refusing to accept the change. This is not something that VCDS has control over.

-Uwe-

 

[MattR72]

@Uwe that's what I remember before the latest update. With the hex-net2 update. Which I do not know how to backdate.

I am wondering why my charge voltage went from 14.4v and I remember changing the target. With vcds when I was first testing the new lithium battery and made the coding changes to 14.2v target voltage for the alternator. As well as coding the battery technology type (lithium ion), battery serial number, battery ah (40ah in this case with a c rating of 100. Note that c rating doesn't come up as an optionfor vw).

So were is the alternator target value for voltage set? As that will tell the alternator how much to charge and what not.

Am I mis remembering making a voltage change in the ecu? Does changing the battery technology change the charge voltage?

 

[Uwe]

So were is the alternator target value for voltage set? As that will tell the alternator how much to charge and what not.

I do not think you can set a charging target voltage per se. Again:

These cars don't run the alternator at a fixed voltage. The voltage commanded by the gateway depends on battery SoC, engine load, temperature, and the type of battery your gateway thinks you have, plus perhaps some other factor I don't know about.

-Uwe-

 

[MattR72]

@Uwe I can post the unsupported scans from when I first got the vehicle. And based on my memory was able to change the voltage. But at this point I just want to understand what ide01860 is for and the ide01855 generator current. How they are related. Specifically what is ide vs mas vs bap. As each one of these has a different function.

 

[TTT]

You would have to call VW and ask their engineering department for the functional description of these IDEs.

 

[PetrolDave]

And based on my memory was able to change the voltage.

A suggestion, instead of just memory, try looking at the adaptation log file that VCDS keeps C:\Ross-Tech\VCDS\Debug\AdpLog.csv - to see if you can find changes to IDE-01860?

 

[Uwe]

But at this point I just want to understand what ide01860 is for and the ide01855 generator current. How they are related.

Unfortunately, VW does not share design specs or source code for control modules with us, so I can't answer that.

-Uwe-

 

[MattR72]

@Uwe does vcds delete prior scans from prior versions (When a new version is released)?