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Touran 2009 BLS 7-Speed DSG: No Gears & Parking Issues, Rolling in D/S/R, VCDS Connected

markus-wielki 12189 13
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  • #1 16691028
    markus-wielki
    Level 18  
    Posts: 459
    Help: 1
    Rate: 175
    Hello, I bought the Touran 2009 bls 7 speed Dsg and zonk after 100km there was a lack of gears and parking (rolling). I have connected vcds no errors in the box and the engine. The line works correctly with the box. Has anyone had this case? What is this damage? Expensive repair? Thank you greetings. I forgot to add the lack of gears to all D, S, R. On the manual the same.
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  • #2 16693071
    markus-wielki
    Level 18  
    Posts: 459
    Help: 1
    Rate: 175
    The parking lot is already there. Damaged joint. Still no gears.
  • #3 16696524
    markus-wielki
    Level 18  
    Posts: 459
    Help: 1
    Rate: 175
    Hello, I'm still fighting. I noticed that the mechatronics do not push these cylinders towards the clutch, which causes a lack of drive. Strange only that there are no errors. Can you force some gearbox test?
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  • #4 16698677
    jacek074
    Level 30  
    Posts: 878
    Help: 186
    Rate: 717
    What is the pressure in mechatronics? Measurement group 30, position 3 is to be between 60 and 40 bar. Preferably on a running engine. Maybe the tester doesn't read the box driver completely.
  • #5 16705783
    markus-wielki
    Level 18  
    Posts: 459
    Help: 1
    Rate: 175
    So yes I use vcds and vas zero errors one and the other. I wanted to do vas adaptation and nothing happens silence. Only a procedure came out could not be done. In these blocks I have the value 0. or no pressure. I disassembled the pump seems to be Oki engine too . if the disc itself is damaged only why zero errors?
  • #6 16705901
    jacek074
    Level 30  
    Posts: 878
    Help: 186
    Rate: 717
    Fuses under the hood No. 2 30A, No. 5 15A good? Strange that the controller does not report a lack of pressure, probably mechatronics to be replaced.
  • #7 16706097
    markus-wielki
    Level 18  
    Posts: 459
    Help: 1
    Rate: 175
    Oki power supply. On plug 2 fixed pros one after the station.
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  • #9 16707147
    markus-wielki
    Level 18  
    Posts: 459
    Help: 1
    Rate: 175
    Oki sockets are there. When I do the basic settings, there is zero reaction silence.
    Attachments:
    • Touran 2009 BLS 7-Speed DSG: No Gears & Parking Issues, Rolling in D/S/R, VCDS Connected 20170918_211646.jpg (1.35 MB) You must be logged in to download this attachment.
  • #10 16709240
    markus-wielki
    Level 18  
    Posts: 459
    Help: 1
    Rate: 175
    Gentlemen, I found the reason. In coding I have all zeros. Will somebody suggest some coding because for dsg 6 is 00020 and for dsg 7? The question is why it got such. If you enter 00020 then the pump said.
    The second question is how to put this mechatronics back. Anyone have any manual for this? thanks greetings.
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  • #11 16709734
    romuald-f
    A/T specialist  
    Posts: 2044
    Help: 405
    Rate: 1540
    Before mounting the mechatronics, the clutch release levers must be moved away. I do not have a special device so I made it from a thick flat bar and blocked it with a screw 6 in the hole, marked in Figure 1. Set the shifts to N, Fig. 2. Screw the guide pins for mechatronics into the gearbox body, Fig. 3. Set the pistons in mechatronics to 25mm, fig. 4. Mount the mechatronics and release the release levers. The mechatronics contain 1.1L of oil and the instruction box gives 1.7L, not enough, I pour 3L (through the vent, 75W90). Touran 2009 BLS 7-Speed DSG: No Gears & Parking Issues, Rolling in D/S/R, VCDS Connected Touran 2009 BLS 7-Speed DSG: No Gears & Parking Issues, Rolling in D/S/R, VCDS Connected Touran 2009 BLS 7-Speed DSG: No Gears & Parking Issues, Rolling in D/S/R, VCDS Connected Touran 2009 BLS 7-Speed DSG: No Gears & Parking Issues, Rolling in D/S/R, VCDS Connected

    Added after 6 [minutes]:

    For mechatronics oil: Servolenkgetriebe-Öl G 004 000 ersatzweise verwenden wir auch
    Dextron III. If you don't have this G 004 000 then you can flood Dextron III.
  • #12 16713529
    markus-wielki
    Level 18  
    Posts: 459
    Help: 1
    Rate: 175
    great thanks for the info. Mechatronics founded. Only now this coding somebody will tell. Thank you
  • #13 16713546
    jacek074
    Level 30  
    Posts: 878
    Help: 186
    Rate: 717
    Coding for 7 speed also 20
  • #14 16713585
    markus-wielki
    Level 18  
    Posts: 459
    Help: 1
    Rate: 175
    I've done 24 improved on 20 and I'll see what happens.
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Topic summary

✨ The discussion revolves around a 2009 Volkswagen Touran with a BLS engine and a 7-speed DSG transmission experiencing a complete loss of gears and parking issues after 100 km of use. The user connected VCDS but found no error codes. Subsequent troubleshooting revealed potential issues with the mechatronics unit, including a lack of pressure and coding errors. Suggestions included checking the pressure in the mechatronics, inspecting fuses, and verifying the integrity of the mechatronics battery socket. The user discovered that the coding was set to all zeros, which may have caused the malfunction. Guidance was provided on how to properly mount the mechatronics and the correct coding for the 7-speed DSG system.
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FAQ

TL;DR: If your Touran 7‑speed DSG shows no drive in D/S/R, verify hydraulic pressure (target 40–60 bar) and basic coding. As one expert notes, "Measurement group 30, position 3 is to be between 60 and 40 bar." [Elektroda, jacek074, post #16698677]

Why it matters: These checks quickly isolate mechatronics, coding, or fuse issues so you can fix no‑gear and rolling-in-P faults fast.

Who this is for: DIYers and techs diagnosing VW Touran 2009 BLS with 7‑speed DQ200 DSG that lost drive or park.

Quick Facts

Why does my Touran 7‑speed DSG have no gears in D/S/R?

Loss of drive often traces to zero hydraulic pressure from the mechatronics. In this case, basic coding was erased to all zeros, which prevented the pump from building pressure. Restoring valid coding re‑enabled pump operation. Check coding first when no faults appear. [Elektroda, markus-wielki, post #16709240]

Why does the car roll in Park (P)?

A damaged parking mechanism joint can stop the parking pawl from locking the gearbox, causing rolling in P. After repairing the joint, parking engagement returned, while the no‑drive issue persisted separately. Inspect the linkage and joint if the vehicle rolls in P. [Elektroda, markus-wielki, post #16693071]

What hydraulic pressure should the DQ200 mechatronics show?

Target about 40–60 bar with the engine running. Check VCDS Measuring Block 30, field 3. If you see 0 bar, verify coding, pump power, and fuses before condemning the unit. "Measurement group 30, position 3 is to be between 60 and 40 bar." [Elektroda, jacek074, post #16698677]

VCDS shows no gearbox faults—what should I check next?

Even with no DTCs, verify the DSG power supply. Inspect under‑hood fuses No. 2 (30 A) and No. 5 (15 A). A blown fuse can stop the pump and solenoids, producing no‑drive symptoms without logged faults. Confirm voltage at the mechatronics connector. [Elektroda, jacek074, post #16705901]

Why won’t Basic Settings or Adaptation start?

Adaptation will not run with invalid or all‑zero coding. In the thread, entering a valid code allowed the pump to run and adaptation to proceed. Confirm coding values before attempting Basic Settings. Then recheck pressure readings. [Elektroda, markus-wielki, post #16709240]

How do I code the 7‑speed DQ200 DSG?

Use coding value 00020 for the 7‑speed unit. This enabled normal pump operation and restored communication for adaptation. Avoid experimental values; confirm 00020 is applied and saved. [Elektroda, jacek074, post #16713546]

How do I reinstall the DQ200 mechatronics correctly?

Follow a controlled refit:
  1. Move clutch release levers away and lock; set selector to N.
  2. Set mechatronics pistons to 25 mm; guide the unit on alignment pins.
  3. Mount mechatronics, release levers, and fill specified oil. "Set the pistons in mechatronics to 25mm." [Elektroda, romuald-f, post #16709734]

What oil and quantity does the mechatronics use?

Use G 004 000; Dexron III is acceptable if unavailable. The mechatronics holds about 1.1 L, while the instruction shows 1.7 L; the contributor reports filling 3 L via the vent during service. Record amounts during drain/refill. [Elektroda, romuald-f, post #16709734]

How do I test DSG pump pressure in VCDS?

Open VCDS, select the transmission module, then Measuring Blocks. Read Group 30, field 3 for line pressure. Expect roughly 40–60 bar with the engine running. Zero indicates no build and demands coding and power checks. [Elektroda, jacek074, post #16698677]

Could a cracked connector cause no‑drive issues?

Yes. A common fault is a cracked mechatronics battery socket/stocking, which disrupts power and control. Inspect the socket and wiring for splits and heat damage. Repair or replace if defective before deeper teardown. [Elektroda, romuald-f, post #16706147]

What is VCDS in this context?

VCDS is the diagnostic software used here to scan the DSG, view Measuring Blocks, and run Basic Settings. The poster also referenced VAS for adaptation attempts. Both tools connect to the gearbox controller. [Elektroda, markus-wielki, post #16705783]

What is the DSG mechatronics unit on the DQ200?

It’s the electro‑hydraulic control module that builds pressure and moves clutch and shift actuators. It houses pistons, a pump, and oil. Installation requires piston pre‑set and correct fluid fill to restore drive. [Elektroda, romuald-f, post #16709734]

Why did the pump start after entering coding 00020?

All‑zero coding disabled pump and adaptation. Entering 00020 reactivated the pump, confirming a software configuration issue rather than immediate hardware failure. Always capture coding before repairs. [Elektroda, markus-wielki, post #16709240]

Is coding value 24 valid on the 7‑speed DQ200?

The poster tried 24, then corrected to 20. Use 00020 for the 7‑speed. After coding, verify pressure and run adaptation. "Coding for 7 speed also 20." [Elektroda, jacek074, post #16713585]

What rare failure should I watch for during reassembly?

If the basic settings stay silent despite power and coding checks, inspect the mechatronics socket for cracks. This edge case interrupts power under load and mimics controller failure. [Elektroda, romuald-f, post #16706147]
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