Can VCDS fix my car?

   #1  
2

2012EosExecutive

New Member
Joined
Jan 4, 2025
Messages
7
Reaction score
2
Location
Honolulu, HI, USA
My issue,

I got new fog lights and was getting an error on the gage cluster every time I started the car saying the fog lights were bad. After you turned them on and off the message disappeared. I saw on another forum that you can turn off "cold diagnostics" to stop the message. I of course busted out my obdEleven and changed the longcode in the central electrics to match what I saw on the post but the post was using VCDS and the number of bytes didn't match. I figured if it didn't work I could just change it back. No go. Now my door locks don't work at all (key fob, interior button, and when I use the key it mechanically operates but no power lock actuation). The car doesn't recognize the key is in the car and the only way to get the ignition to turn on is to hold the key to the start push button. The windows barely work (I gotta keep hitting the switch and I only get 1/4 inch movement every 5th time) the battery is flickering on the gage cluster and the car will try to start but is also in an intermittent status. (It turns over and stops repeatedly as long as I push the start button). Also, the gage cluster doesn't have a constant signal that the door is open (as evidenced by the gage cluster screen driver door flickering open and shut). This is also weird because the hood is indicating normally. Finally, I noticed the tail lights are flickering while ignition is on. This all happened because I changed the long code in central electrics and now when I fire up obdEleven it can see the module on the main screen and it shows green in the list of modules but as soon as I click on the central electrics module to go to the screen to change the longcode back it says "control unit not responding. Check ignition and try again". Can I revert the longcode back With VCDS?!



Things I've tried:



Unplug battery and short positive and negative battery leads for 10 min.


Attached a jump box to the battery (even though is says battery is 12.4V in obdEleven)


Cleared Cache in APP



Tried with a different phone



Copied the logs that say no errors with the central electrics module and even shows the longcode with the improper modification



Searched a bunch on forums and almost bought a VCP to reflash the central electrics. (Might have to go this route in the end)


Any help is seriously appreciated!

Also weird is obdeleven says no errors found.

Bad code:
6F000A3F8A232A64808802C174008DC44855FF0665200DB0E48C60008040

Good old code:
6F000A3F8A232A64808802C174008DC44855610665200DB0E48C60008040

Log from obdeleven:

Code: 
OBDeleven data log

Date: 2025-01-04 16:39

VIN: WVWFW7AH4CV010043
Car: Volkswagen Eos
Year: 2012
Body type: Coupe convertible
Engine: CBFA
Mileage: 70970 KM

---------------------------------------------------------------
01 Engine

System description: MED17.5.2 03
Software number: 06J906027CH
Software version: 1440
Hardware number: 06J907309B
Serial number: 00000000000000
Long coding: 041C01081C070160

Trouble codes:
No trouble codes found

---------------------------------------------------------------
02 Transmission

System description: GSG DSG AG6 511
Software number: 02E300057B
Software version: 2730
Hardware number: 02E927770AL
Hardware version: F11
Serial number: 00001107112356
Coding: 0000020

Trouble codes:
No trouble codes found

---------------------------------------------------------------
03 Brakes

System description: ESP MK60EC1
Software number: 1K0907379BJ
Software version: 0121
Hardware number: 1K0907379BJ
Hardware version: H31
Long coding: 514B600A492300FA8A0B06E8921C0041310000

Trouble codes:
No trouble codes found

---------------------------------------------------------------
04 Steering Angle Sensor


Trouble codes:
No trouble codes found

---------------------------------------------------------------
05 Keyless System

System description: VWKESSYPQ35GP
Software number: 5K0959434A
Software version: 0802
Hardware number: 5K0959434A
Hardware version: 085
Serial number: 0150203323
ODX name: EV_KESSY_PQ35GP
ODX version: A01018
Long coding: 030C0C

Trouble codes:
No trouble codes found

---------------------------------------------------------------
08 Air Conditioning

System description: Climatronic
Software number: 1K8907044AT
Software version: 0202
Hardware number: 1K8907044AT
Hardware version: H05
ODX name: EV_Climatronic
ODX version: A01010
Long coding: 0810019002

Trouble codes:
No trouble codes found

---------------------------------------------------------------
09 Central Electrics

System description: BCM PQ35 H+
Software number: 5K0937087Q
Software version: 0148
Hardware number: 5K0937087Q
Hardware version: 111
Long coding: 6F000A3F8A232A64808802C174008DC44855FF0665200DB0E48C60008040

Trouble codes:
No trouble codes found

---------------------------------------------------------------
10 Parking Assistance

System description: PARKHILFE 4K
Software number: 1Q0919475A
Software version: 0006
Hardware number: 1Q0919475
Hardware version: H02
Serial number: 32901119400767
ODX name: EV_EPHVA14VW4650000
ODX version: 001003
Long coding: 304101

Trouble codes:
No trouble codes found

---------------------------------------------------------------
15 Airbag

System description: 20 Airbag VW8C
Software number: 1Q0959655B
Software version: 0210
Hardware number: 1Q0959655B
Serial number: 003G2000SUYR
Coding: 0012848

Trouble codes:
No trouble codes found

---------------------------------------------------------------
16 Steering Column

System description: LENKS.MODUL
Software number: 5K0953569AL
Software version: 0180
Hardware number: 5K0953569AL
Hardware version: 016
Serial number: 20230306200617
ODX name: EV_SMLSNGVOLWS
ODX version: A01004
Long coding: 100A140000

Trouble codes:
No trouble codes found

---------------------------------------------------------------
17 Dashboard

System description: KOMBI
Software number: 1Q0920985F
Software version: 0407
Hardware number: 1Q0920985F
Hardware version: H03
Serial number: 00000000000000
ODX name: EV_Kombi_UDS_VDD_RM09
ODX version: A04114
Long coding: 271F01

Trouble codes:
No trouble codes found

---------------------------------------------------------------
19 Gateway

System description: J533 Gateway
Software number: 7N0907530BC
Software version: 1663
Hardware number: 7N0907530AN
Hardware version: H56
Serial number: 31123500F10066
Long coding: 355000

Trouble codes:
No trouble codes found

---------------------------------------------------------------
25 Immobilizer

System description: IMMO
Software number: 5K0953234
Software version: 0407
Hardware number: 5K0953234
Hardware version: H03
ODX name: EV_Immo_UDS_VDD_RM09
ODX version: A03009
Long coding: 000007

Trouble codes:
No trouble codes found

---------------------------------------------------------------
26 Roof Control

System description: Verdecksteuergeraet
Software number: 1Q0959255F
Software version: 0854
Hardware number: 1Q0959255F
Hardware version: 000
Serial number: 111960305
Coding: 0655366

Trouble codes:
No trouble codes found

---------------------------------------------------------------
2B Steering Column Lock

System description: ELV-PQ35
Software number: 5K0905861A
Software version: 0230
Hardware number: 5K0905861A
Hardware version: H20
Serial number: 11000168397003
ODX name: EV_ELVMarquMPVW36X
ODX version: A01001
Long coding: 4900000000000000

Trouble codes:
No trouble codes found

---------------------------------------------------------------
42 Driver Door

System description: Tuer-SG 009
Software number: 1Q0959701H
Software version: 2151
Hardware number: 1Q0959701H
Coding: 0021687

Trouble codes:
No trouble codes found

---------------------------------------------------------------
44 Steering Assistance

System description: EPS_ZFLS Kl. 70
Software number: 1K0909144M
Software version: 3201

Trouble codes:
No trouble codes found

---------------------------------------------------------------
46 Comfort System


Trouble codes:
No trouble codes found

---------------------------------------------------------------
47 Sound System

System description: DSP 10 Kanal
Software number: 1Q0035456F
Software version: 0010
Hardware number: 1Q0035456F
Serial number: 75809000218801

Trouble codes:
No trouble codes found

---------------------------------------------------------------
52 Passenger Door

System description: Tuer-SG 009
Software number: 1Q0959702H
Software version: 2151
Hardware number: 1Q0959702H
Coding: 0021942

Trouble codes:
No trouble codes found

---------------------------------------------------------------
55 Headlight Regulation

System description: AFS-Steuergeraet
Software number: 5M0907357D
Software version: 0149
Hardware number: 5M0907357D
Coding: 1774803

Trouble codes:
No trouble codes found

---------------------------------------------------------------
5F Multimedia

System description: MU-S-NS-US
Software number: 5C0035684D
Software version: 0478
Hardware number: 5C0035684
Hardware version: H21
Serial number: VWZAZ2R0336691
ODX name: EV_MUStd4CTSAT
ODX version: 001022
Long coding: 02620002AA00000051220005001D0C001F0100D400300300C6

Trouble codes:
No trouble codes found

---------------------------------------------------------------
62 Rear Left Door

System description: Tuer-SG 004
Software number: 1Q0959811B
Software version: 0605
Hardware number: 1Q0959811B
Coding: 0000144

Trouble codes:
No trouble codes found

---------------------------------------------------------------
63 Entry Assistance Left

System description: J572 EASYENTRY FS
Software number: 1Q0959790A
Software version: 0603
Hardware number: 1Q0959790A
Hardware version: 560
Serial number: 5DS008646-01--
Coding: 0000002

Trouble codes:
No trouble codes found

---------------------------------------------------------------
65 Tire Pressure

System description: RDK
Software number: 5K0937087Q
Software version: 0821
Hardware number: 5K0937087Q
Hardware version: 111
Long coding: 018705

Trouble codes:
No trouble codes found

---------------------------------------------------------------
72 Rear Right Door

System description: Tuer-SG 004
Software number: 1Q0959812B
Software version: 0605
Hardware number: 1Q0959812B
Coding: 0000144

Trouble codes:
No trouble codes found

---------------------------------------------------------------
73 Entry Assistance Right

System description: J573 EASYENTRY BFS
Software number: 1Q0959790A
Software version: 0603
Hardware number: 1Q0959790A
Hardware version: 563
Serial number: 5DS008646-01--
Coding: 0000002

Trouble codes:
No trouble codes found
 
Last edited by a moderator:
   #3  
2

2012EosExecutive

New Member
Joined
Jan 4, 2025
Messages
7
Reaction score
2
Location
Honolulu, HI, USA
Sorry. I'm super stressed about this whole ordeal. It would be way easier to read if i had better paragraph structure.
 
   #4  
T

TTT

Verified VCDS User
Verified
Joined
Jun 10, 2023
Messages
1,167
Reaction score
521
Location
Netherlands
VCDS Serial number
C?ID=547002
This forum is intended for vcds users. You should search assistance on forums of the other makers.

Alternatively, purchase legit vcds and help could be provided here.
 
   #5  
stefdds

stefdds

Verified VCDS User
Verified
Joined
Apr 13, 2015
Messages
2,974
Reaction score
2,248
Location
Milwaukee, Wisconsin USA
VCDS Serial number
C?ID=174556
Can I revert the longcode back With VCDS?!
Click to expand...
I believe it could.

If you can find someone with a Legitimate VCDS (translation..... not a clone) , have them do a complete and unedited Auto-Scan ; then post it right here on your thread. I believe that is about your only option (on this forum). Other than purchasing a VCDS.

On a positive note, at least you have the original long code!
 
Last edited:
   #6  
Uwe

Uwe

Benevolent Dictator
Administrator
Joined
Jan 29, 2014
Messages
53,262
Reaction score
35,992
Location
USA
VCDS Serial number
HC100001
2012EosExecutive said:
I of course busted out my obdEleven and changed the longcode in the central electrics to match what I saw on the post but the post was using VCDS
Click to expand...
So you copied the entire coding string from another car?

2012EosExecutive said:
and the number of bytes didn't match.
Click to expand...
That should have been a clue to listen to: "Stop right there!"

2012EosExecutive said:
Searched a bunch on forums and almost bought a VCP to reflash the central electrics.
Click to expand...
Since you've messed up Byte 18 in a PQ35 BCM, I sure as heck don't want to promise you that VCDS can fix this, and VCP might be your best bet.

-Uwe-
 
   #7  
stefdds

stefdds

Verified VCDS User
Verified
Joined
Apr 13, 2015
Messages
2,974
Reaction score
2,248
Location
Milwaukee, Wisconsin USA
VCDS Serial number
C?ID=174556
I of course busted out my obdEleven and changed the longcode in the central electrics to match what I saw on the post but the post was using VCDS and the number of bytes didn't match. I figured if it didn't work I could just change it back.
Click to expand...

So, do you have the original long code to This vehicle? The code before you tried any steps.
 
   #8  
2

2012EosExecutive

New Member
Joined
Jan 4, 2025
Messages
7
Reaction score
2
Location
Honolulu, HI, USA
Thanks for all your help! The code I got was from an eos forum. I only changed byte 18 as that was the byte they said to modify to turn off the cold diagnostics. (I didn't even change the number, I just checked the boxes). Had I known this was even a remote possibility I would have been way more careful. I think I'm going to get my car to VW. Thanks again and I won't be using OBDeleven anymore! I was hoping VCDS would be a cheaper alternative to the thousands I'm about to spend. :(
 
   #10  
stefdds

stefdds

Verified VCDS User
Verified
Joined
Apr 13, 2015
Messages
2,974
Reaction score
2,248
Location
Milwaukee, Wisconsin USA
VCDS Serial number
C?ID=174556
Before you go to the dealer, see if you can find someone with a Legitimate VCDS and see if they can enter that code for you. Or, take your chances and purchase a VCDS and the forum can attempt to guide you and correct the problem.

Unfortunately you learned the hard way, but it certainly could be worse. If the VCDS strategy does not work, you could always sell it ; that's if you no longer want to learn to use it for diagnostics. They have a very good resale value.

AESwave
5465 E Hedges Ave
Fresno, CA 93727
559-292-7851
email: info@aeswave.com

Automotive Diagnostic solutions
(formerly Tyler's Hardware Supply
110 West Baseline Road
Lafayette, CO 80026
720-291-7724

Cascade German Parts, Inc.
710 NE Cleveland Ave
STE 150
Gresham, OR 97030
503-669-CARS
email: info@cascadegerman.com

Or, directly from Ross-Tech: https://store.ross-tech.com/shop/cat/VCDS/

BTW, if its any consolation.... many established VCDS users found themselves in this very situation ; so, hang in there.
 
Last edited:
   #11  
Uwe

Uwe

Benevolent Dictator
Administrator
Joined
Jan 29, 2014
Messages
53,262
Reaction score
35,992
Location
USA
VCDS Serial number
HC100001
stefdds said:
many established VCDS users found themselves in this very situation ; so, hang in there.
Click to expand...
Eh? Long Coding Helper has had a "Don't mess with Byte 18" warning for PQ35 BCMs more-or-less forever.

EOS-Byte-18.png

-Uwe-
 
   #12  
stefdds

stefdds

Verified VCDS User
Verified
Joined
Apr 13, 2015
Messages
2,974
Reaction score
2,248
Location
Milwaukee, Wisconsin USA
VCDS Serial number
C?ID=174556
Right, but that's not what I meant.

Many beginners or folks who are just not aware blindly walk into these situations with advice from forums. Many users here ,who later purchased VCDS, found themselves in similar situations as the OP. They started out with another scan / diagnostic device..... like him.

Unfortunately ,he wasn't using VCDS. (and couldn't read that very valuable message!)

Perhaps he will become a verified user and rename his user name to Byte-18 !
 
  • Haha
Reactions: Uwe
   #13  
C

cristo_844

Verified VCDS User
Verified
Joined
Jan 6, 2021
Messages
95
Reaction score
45
Location
Portugal
VCDS Serial number
C?ID=412536
VCDS can easily fix byte 18 even if the byte 18 is coded 00!
VCP is the same regarding coding of byte 18 and bcm eeprom dump tool is a can off worms if you don't have previus dump saved!
 
Last edited:
   #14  
Uwe

Uwe

Benevolent Dictator
Administrator
Joined
Jan 29, 2014
Messages
53,262
Reaction score
35,992
Location
USA
VCDS Serial number
HC100001
   #15  
C

cristo_844

Verified VCDS User
Verified
Joined
Jan 6, 2021
Messages
95
Reaction score
45
Location
Portugal
VCDS Serial number
C?ID=412536
Uwe said:
Right now, it's coded to FF... :confused:

-Uwe-
Click to expand...
i've seen that...no idea what's going on he that, even 61 in the supposed good code is strange ....should be 00 from factory!
but i'm betting that the kessy has something to the it the problem :rolleyes: :rolleyes:
 
   #18  
stefdds

stefdds

Verified VCDS User
Verified
Joined
Apr 13, 2015
Messages
2,974
Reaction score
2,248
Location
Milwaukee, Wisconsin USA
VCDS Serial number
C?ID=174556

What Is Volkswagen’s KESSY Keyless Access? | Autobytel

KESSY is the electronic locking and starting system found in modern Volkswagens that allows the driver to access and start the vehicle without having to use a traditional key. The system is made up of
www.autobytel.com www.autobytel.com


Also, you can (safely) click around and read about your new VCDS system here:
(Also note the Manual Index half way down the page)


Watch as many of these (twice) as you can:
Especially the set-up / Intro videos

www.youtube.com

RossTechVCDS

We provide diagnostics solutions for VW, Audi, Seat, and Skoda automobiles through our principal product, VCDS. Ross-Tech offers free vehicle support to our registered customers via our web forums, see link below.
www.youtube.com www.youtube.com

Also, note the blue tool bar at the very top of the page; click around up there as well.
 
Last edited:
   #19  
2

2012EosExecutive

New Member
Joined
Jan 4, 2025
Messages
7
Reaction score
2
Location
Honolulu, HI, USA
You guys have been a million times more helpful than the OBDeleven site. Thank you all again! Let's hope I can get this sorted without too much more expense and I'm confident with VCDS in the future I won't be in this scenario!
 
You must log in or register to reply here.
Back
Top