Re-fit a lockable rear diff to my 2008 T5 4motion

   #1  

jsola

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Hi.

I bought a second hand T5 multivan 4motion from 2008 a year ago. I wanted it with rear diff lock, but to my surprise the day I was to lock the diff, it did not work, and I found out the rear diff had been replaced by a non-lockable rear diff.:cry:

So I plan to re-fit an original lockable rear diff. This work could be like a retrofit, maybe, but I suspect it should be way easier since I know my van will easily accept the modifications as it accepted them when she went out of the factory.

So I am posting here a AWD scan and a complete autoscan. In the AWD section, I'd appreciate if someone with a 4motion from 2008 with rear diff lock can compare the codes below against theirs, and give me some clues on what I should be doing / considering / taking care of before starting the job --- even before buying a lockable differential.

AWD section:
Code:
Address 22: AWD        Labels: None
   Part No: 7H0 907 554 F
   Component: HALDEX 4Motion      2110  
   Coding: 0000002
   Shop #: WSC 49856 001 1048576
   VCID: 33331D04772445EF53F-513C
No fault code found.

Full autoscan for reference:
Code:
Thursday,14,February,2019,02:13:28:04823
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 18.9.1.0 (x64)  HEX-V2 CB: 0.4437.4
Data version: 20190114 DS296.0
www.Ross-Tech.com

VIN: WV2ZZZ7HZ8H133087   License Plate:

Chassis Type: 7H (7H - VW Transporter/Multivan (2003 > 2010))
Scan: 01 02 03 08 09 0B 0D 15 16 17 18 19 1C 22 2D 37 45 46 47 56
          57 6E 76 77 78 7D
 
VIN: WV2ZZZ7HZ8H133087   Mileage: 236970km-147246miles
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 070-906-016-BPC.clb
   Part No SW: 070 906 016 DR    HW: 070 906 016 DR
   Component: R5 2,5L EDC  000SG  1584  
   Revision: --H06---    Serial number: VWZ7Z0H6297210
   Coding: 0001172
   Shop #: WSC 36843 001 1048576
   VCID: 6393AD448744956FE3F-5184
No fault code found.
Readiness: 0 0 0 0 1
-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 7H0-907-37x-ESP.lbl
   Part No SW: 7H0 907 379 R    HW: 7H0 907 379 R
   Component: ESP MK25E1          0104  
   Revision: 00H31001    
   Coding: 0000607
   Shop #: WSC 02756 790 00000
   VCID: 44D14ED8228AF257FA5-513C
1 Fault Found:
00668 - Supply Voltage Terminal 30 
            002 - Lower Limit Exceeded
             Freeze Frame:
                    Fault Status: 01100010
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 40
                    Mileage: 236975 km
                    Time Indication: 0
             Freeze Frame:
                    Count: 128
                    Count: 6913
                    Count: 128
                    Count: 255

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: Redir Fail!
   Part No: 7H5 820 045 P
   Component: CLIMA/AC            0303  
   Shop #: WSC 00000 000 00000
   VCID: 372B2914635CA9CF6F7-513C
No fault code found.
-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels:. 7H0-937-049.lbl
   Part No: 7H0 937 049 AD
   Component: BORDNETZ SGVER 1.0  2101  
   Coding: 0000103
   Shop #: WSC 02756 790 00000
   VCID: 74B1DE1832AA02D78A5-513C
No fault code found.
-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 6Q0-909-605-VW5.lbl
   Part No: 1C0 909 605 F
   Component: 11 AIRBAG VW61 0R   0004  
   Coding: 12593
   Shop #: WSC 02756  
   VCID: 270BF954B6FC394FFF7-513C
No fault code found.
-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 7Hx-920-xxx-17.lbl
   Part No: 7H0 920 861 E
   Component: KOMBI+WEGFAHRSP VDO V03  
   Coding: 06113
   Shop #: WSC 32919  
   VCID: 2E050C70990668073C1-513C
   WV2ZZZ7HZ8H133087     VWZ7Z0H6297210
No fault code found.
-------------------------------------------------------------------------------
Address 18: Aux. Heat        Labels: 7H0-819-008.lbl
   Part No: 7H0 819 008 R
   Component: Standheizung        0209  
   Shop #: WSC 00000 000 00000
   VCID: 3B2335245F748DAF8BF-513C
No fault code found.
-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels: 6N0-909-901-19.lbl
   Part No: 6N0 909 901 
   Component: Gateway K<->CAN    0001  
   Coding: 00022
   Shop #: WSC 02756  
   VCID: 70B9D20843B23EF76ED-513C
No fault code found.
-------------------------------------------------------------------------------
Address 22: AWD        Labels: None
   Part No: 7H0 907 554 F
   Component: HALDEX 4Motion      2110  
   Coding: 0000002
   Shop #: WSC 49856 001 1048576
   VCID: 33331D04772445EF53F-513C
No fault code found.
-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 7H0-959-433.lbl
   Part No: 7H0 959 433 B
   Component: C11 Komfortgerát     0004  
   Coding: 00025
   Shop #: WSC 02756  
   VCID: 323D18008D3E4CE7589-4B1E
No fault code found.
-------------------------------------------------------------------------------
Address 6E: Ctrl Head Roof        Labels: 7H5-919-044-W1.clb
   Part No SW: 7H5 919 044 J    HW: 7H5 919 044 J
   Component: J702  Dachdisplay   0500  
   Revision: 1010007S    Serial number: 00000000060769
   Coding: 0000003
   Shop #: WSC 02756 790 00000
   VCID: 392F2F2C5548BFBF993-513C
No fault code found.
 
   #2  

jsola

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While I wait, I'd also appreciate a little help in interpreting the AWD section -- Since I could not find a "Autoscan interpretation guide" section or similar:

What is "Shop #" ??
What is "WSC" ??
What is "VCID" ??
What are the essential codes I should be looking at? The "Coding" section? Is it really just these few codes, or should I improve this scan with some deeper scan?

Thanks from a newbie!
 
   #3  

Uwe

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   #4  

jsola

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I am having no feedback on this. Le me try again see if I can wake this thread up...

I have a T5 4-motion from 2008. It is originally with diff lock (differential lock). However, the previous owner changed the diff to a non lockable one. So now I have no diff lock. However, I have all the valves and the dash button and the vacuum tubes and everything needed to re-fit a diff-lock unit.

I wish to have the diff lock back in. My mechanic tried 3 units already, and says he's having trouble with the ECU rejecting them. I do not trust my mechanic a lot (he could not replace a shaft boot properly last week) and am trying to take this job in my own hands.

I am ebaying for a rear differential with diff lock. I can find some things in the 500 euro range, which I think it's pretty fair. I found one diff from 2006 with diff lock. The downside, it comes with no Haldex unit.

So my intention is to use the mechanical gearings part, which has the diff lock, and fit my working haldex into it. Since my ECU is really communicating with my Haldex, I think I should be able to complete the job this way without communication issues.

The job would be: 1) Take my working haldex out of my non-lockable diff, 2) put it in the new ebay lockable diff, 3) put the whole thing under my van.

Any wise opinions for / against this approach??
 
   #5  

Jack@European_Parts

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Yeah, look up all parts needed in microfiche at dealer and use PR tag + VIN.
 
   #8  

jsola

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Thanks Jack for this input. I did not know what PR codes were until now!

I am posting this for reference. Also if anyone is willing to clarify some doubts I will be of course thankful!

The diff lock option has PR code 1Y4. This involves the differential housing and parts, including all the commands for the lock, and the signals from the log, which come from 3 reed switches located at the lock lever.

The Haldex unit, however, is common to both lockable and non-lockable versions.

I do not see any other difference in parts. Even across the years of production, all parts of the differential itself (which differ on the last letter of the OEM code depending on year) seem to be compatible. The Haldex however seems to have changed sometime in 2007, so beware of this part code. I am keeping my Haldex so no problem here.

Regarding ECUs and codes, the reed switches in the diff lock mechanism communicate with the AWD computer which is located in the Haldex.

Additionally, and to allow for engaging the diff lock, the system first reads vehicle wheel speeds from the ABS computer. It seems to only read this info, so I assume the ABS computer will need no recoding after re-fitting the diff lock.

So the situation seems as follows:

- If I keep the Haldex I currently have, I should have no mechanical problems in assembling it into a lockable differential.

- If I re-fit the lockable differential, I may have to see whether I have to recode the AWD computer or not to account for the info read from the reed switches. Actually here I do not know: how can I know what is necessary?

- It does not seem I have to take care of codings in the ABS computer.

The current code of the AWD computer in the Haldex I have is:

Code:
Address 22: AWD        Labels: None
   Part No: 7H0 907 554 F
   Component: HALDEX 4Motion      2110  
   Coding: 0000002
   Shop #: WSC 49856 001 1048576
   VCID: 33331D04772445EF53F-5160
2 Faults Found:
00003 - Control Module 
            014 - Defective - Intermittent
02248 - Valve for Controlling Clutch Operating Angle (N373) 
            014 - Defective - Intermittent

Most of the parts in my van have #Shop code WSC 02756. So my Haldex seems to be not the original, or perhaps it has been recoded at #Shop 49856. How to know which shop is this? I might be interested in contacting them.

Thanks

Joan
 
Last edited:
   #9  

Jack@European_Parts

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Vehicle Identification No.WV2ZZZ7HZ8H133087
Modeltransp. multivan
4motion
TR
Date of production10.03.2008
Model year2008
Sales type7HMC15
Engine CodeBPC
Transmission CodeKLF
Axle drive6S
EquipmentEJ
Roof colorG2
Carpet color code
Exterior color / Paint CodeG2 / Y3D


fod-control-signs-risk-series.png



Take to retrofits or install parts to comport with a qualified repair.......... :p





Code:
Special editionsE0AWithout special action equipment
Lockable wheel bolts1PAStandard wheel bolts
Vehicle class differentiation units/platform components1CPVehicle class differentiation -7H0-
drive-off assistanceUG0Without hill start assist/hill descent control/comfort driving assist
Emission standard7GGEmission standard EU4 DPF
Trailer hitch1D2Trailer hitch, removable and lockable
airbag4UFAirbag for driver and front passenger with front passenger airbag deactivation
Storage compartments, cab5FAWithout additional storage in the cab
Tray areas packageQE4stowage package 2
Armrests for front seats4S1Armrests for both front seats
Aerials8ZFSide window antenna
Exterior mirror setting6XNExterior mirrors, power-adjustable/ separately heated
Left exterior mirror5SLLeft exterior mirror, aspherical
Right exterior mirror5RBRight exterior mirror, convex, and wide-angle
"Multimedia"video/DVD/notebook connection9WCWithout "Multimedia" in vehicle
Final drive/gear ratio0ZNGear ratio, high geared
Equipment levelsA8EMultivan "Comfortline"
batteriesJ1DBattery 380 A (72 Ah)
Components with special surface6FFExterior mirror housing and various attachments colour coded to vehicle
Controls (steering wheel/steering column)4LAWithout control element
Dashboard illumination7V0Standard dashboard illumination
Floor coverings in cab5ADCarpet floor covering in cab
Floor covering in passenger/luggage compartment5BETough plastic lining in passenger compartment
Battery/alternator capacityNY0Standard battery/alternator capacity
Component part sets with country-specific design requirementsB0BComponent parts set, complying with vehicle type for Austria, various parts
vehicle tools and jack1S1vehicle tools and jack
Brake systems1AKElectronic stability control (ESC) with brake assist system
Owner's manuals0XYInformation kit in German (for Austria)
Heated washer nozzles9T1Heated washer nozzles in front
CD ROM/DVD/SD card7QAWithout CD/DVD for navigation
CD changer/CD player7A0Without CD changer/CD player
C-rails6L0Without C-rails
General operating permit, alterationsC16Operating permit, alteration
Roof types3R0Standard roof
Shock absorption/suspension, chassis1BJUprated suspension/shock absorption in front and rear
Roof rails/roof load rack3S0Without roof rails/roof load rack
roof turn signals9H0Without roof turn signal lights
Roof insert for in passenger/luggage compartment3JAWithout roof insert in the luggage/passenger comp.
Differential lock1Y4Differential lock
Roof trim5CJRoof trim, 2-piece comfort headliner in cab and passenger compartment
4th row of seats3WAWithout bench seat
Insert for the filling up of unleaded fuel/fuel type2G2Without insert for the filling up (diesel) without fluorination (not RME-resistant)
Theft protection system7AAElectronic immobilizer
Inserts5MADecorative inserts
Identification lights, roof9KAWithout identification lights
Insert/badges (interior)NR1Insert/badges (interior)
Park distance control7X0Without park distance control
2nd row of seats4C22 swivel seats w/ longitudinal adjustm. on rail system
Electric interface for external useUF0Without electric interface
Power-operated door (power latching)GZ0door, manually operated
Electrically actuated door (power closing) right-hand sideGX3Power latching for sliding door right
Antidrum measures2N4Special sound deadening measures in cab and passenger compartment
Manufacturing sequence differentiation0FAStandard manufacturing sequence
Tachograph/logbook9NDTachograph preparation
chassis/running gear2E316-inch chassis
window regulator4R1Power windows
fire extinguisher6A0without fire extinguisher
Hood and trunk stay5NJHood gas prop with standard tailgate vent lock
Headlight activation8K0Without special driving light switching
Rear heating system/ventilation system6CCVent, B-pillar, with fan
Fresh air intake for passenger compartment (with particulate filter)2V1dust-pollen filter
Vehicle specificationsF0ANo special purpose vehicle, standard equipment
Curtains/roller blinds5G0Without curtains
Interior noise suppression measures3W3Special interior noise insulation
Base carrierNG0Without top carrier
Alternators8GRAlternator 150 A
Weight category rear axle0YDWeight range 4 installation control only, no requirement forecast
Weight category front axle0JGWeight category front axle weight range 7
Base engineTN75-cylinder diesel engine 2.5 l unit 070.N
Luggage compartment cover3U4Luggage compartment cover
cruise control system8T0Without cruise control system (CCS)
Exterior noise suppression measures2B1additional noise dampener
Transmission specificationsG0L6-speed manual transmission for four-wheel drive vehicle
Rear gates/tailgate3RCTailgate with window aperture
Rear window insert4HSHeated rear window with rear wiper
Grab handles at roof frame5N6Folding grab handles on roof frame soft fold-away
Entry grab handle (A/B-pillar)6X2Entry grab handle (front passenger side)
Heating and air-conditioning system9AVManually controlled air conditioning in cab plus passenger compartment ventilation with second heater
Rear side window for load or passenger compartment, left4FNSliding window passenger compartment, left
Rear side window for load or passenger compartment, right4JHFixed side window in load/passenger compartment, right
Headlamps8ELHeadlight with double reflector for driving on the right
Labels1HZLabels without country group
Interior lights in passenger and load compartment9CHInterior light concept for Multivan in passenger compartment
Customized installationFC0Without individual installation
Instrument clustersU4AInstrument insert, km/h speedometer
Instrument panel4N3Comfort dashboard
Breakaway interior rearview mirror4L2Breakaway interior rearview mirror, dimming
Sticker (customized or special edition)0KAWithout decals and emblems
Body styleK4HClosed body
coolbox1W0Without refrigerator/glove compartment cooling system
child safety4H1Childproof lock in the rear
Child seatsQA0without child seat
Folding table1U1Folding table
Climatic zones0Y1Standard climatic zones
Head restraints3J3Tilt- and height-adjustable head restraints
Fuel quantity for initial filling1Z0Initial standard fuel filling
Body measures5C0Without special body measures
Cooker for CamperAE0Without camping stove
Paint preservative/transit coating5K7Partial protective cover/film (Europe) with additional transport protection measures
Steering system arrangementL0LLeft-hand drive
Load edge protection2P1Plastic loading edge protection
steering wheels2PWLeather-wrapped steering wheel
Speaker installation8RM8 speakers (passive)
Leather parts3HBLeather parts
Air cleaner (engine)1L0Standard air cleaner
Headlight range control8Q1Headlight range control
Multi-function display/trip computer9Q1Multi-function display/trip computer
AwningNF0Without awning
Engine cooling8Z5not hot country
Engine specificationsMS05-cyl. turbo diesel engine 2.5 L/128 kW pump-jet injection system base engine: T9L/T03/T86/TB7/TG7/TN7/TP7
Left vanity mirror4SMLeft vanity mirror illuminated with cover and pocket
Right vanity mirror4TMVanity mirror, right, illuminated with cover and pocket
Navigation device7Q0without navigation system
rear fog lamp8TCRear fog light for driving on the right
Front fog lamp/additional headlamp8WBFront fog lamps
Upgrading measuresGP0Vehicles w/o special upgrade measures
Hubcaps1NDFull wheel covers
WheelsC1GSteel wheels 6.5J x 16
Radios8UBradiopreinstallation
Smoker's/non-smoker's package9JCSmoker's package
Spare wheel mounts1B1Standard spare wheel bracket
tireH1EWinter tires 215/65 R16 C 106/104T
Tire suppliersV0ATires without specification of tire brand
Spare wheel/breakdown kit1G2Spare wheel with full tyre, steel
Wheelbases0E1Short wheelbase
Surround sound combination/rotating beacon light9LAWithout rotating emergency lights
PW2Auxiliary water heater with timer and radio remote control
RV1Radio preparation
WE7Package for Austria
ZK3Air conditioning system for cab and passenger compartment ventilation
ZR9Steel spare wheel with original equipment tire (Tire Mobility Set deleted)
Side airbag4X3Side airbag in front, with curtain airbag
Stowage compartmentAF0without storage room
Special labels/plates0STLabels in German and French
Hinges for side and tail gates5V3Hinges for rear door/flap (normal version)
Tail lamp assemblies8SDTaillight assembly w/ red colored lens
Pane type (except windshield)QL5Dark tinted glass in rear seat area (Venus 35/Privacy) heat-insulating glass (green) in front
Locking mechanism for boot lid/cover rear4E9Trunk lid power closing with operating lever inside
Front seat, left3TFFront left comfort seat
Front seat, right3SFComfort seat, front right
Seat belt check9P0without press button buckle with warning contact
seat coversN0HSeat trim covers in woven fabric
Seat adjustment3L3Manual height adjustment for front seats
seat heater4A3seat heating for front seats separat controlable
Side interior lighting passenger/luggage compartment5DDComfort side trim panel in passenger compartment
Key for locking system8QDKey for locking system
Horns8Y1Two-tone horn
Voice enhancerVX0Without voice enhancer
Protective side molding4B2Body-colored protective side molding
Sunroof roller blind for rear/side windows3Y7Roll-up sun screen
power outlet7B312-volt outlet(s)
Bumper2JGbumper in color of vehicle
Headlamp washer system8X0Without headlamp washer system
Windshield wiper intermittent control/ light/rain sensor8N1Windshield wiper intermittent control
mud flaps6N0without mud flaps
Special approval measures3M7Passenger car version with up to 7 seats
Nameplate set0NMWithout engine designation and nameplate set
Door storage compartments in front3YRDoor pockets with insert mats
Mass damper for steering wheels1Q3Mass damper for steering wheel, XXHz
Door and lid locking system4K3Central locking w/ radio remote control, interior controls and SAFELOCK
Doors, passenger/load compartment, left5Q0Without door in load/passenger compartment left (closed sideboard)
Doors, passenger/load compartment, right5R2Sliding door right in load/passenger compartment
Type approval countries/countries with special requirementsB12Type approval country Austria
Carrier frequency for remote control5D1Carrier frequency 433.92 to 434.42 Mhz
Partition3CAwithout partition
Step illumination9N3Step illumination, cab and sliding door(s)
Door and side trim panels3LQDoor trim panel
Identification plates1EXSpecial identification plate for EU
Delivery equipment2A0Without delivery equipment
First aid kit / warning triangle1T3First aid kit with warning triangle
Modular seat attachment2Q0Without modular seat mounting
Storage compartment -- veneered key storage box4Y0Without storage compartment/safe box
Telephone / telematics9W0Without car phone preparation/ installation
Lashing rings/rails for load restraint6B3Lashing rings for tough floor covering
LongLife Service RegimeQG1LongLife Service Regime
Windshield Glass4GFWindshield in heat-insulating glass
Washer fluid level indicator8W1Washer fluid level indicator
Second battery/battery installation8FB2nd battery
Additional tires (snow tires)2WAwithout spare tyre
floor mats0TAwithout floor mats
Additional child seat anchors3B4Child seat anchors for child seat system ISOFIX
3rd row of seats3VX3-seater bench with storage compartment, movable and reclining seat mechanism
Additional dust seals6U1Additional dust seal outside
permissible total weight0WQGross vehicle weight rating
Auxiliary heating system7VLWater heater with radio remote control
 
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