OBDSTAR (TCM-021) | ZF (6HP19/21/26/28/32) 16-pins TCM – 15-pins DB15 Adapter Cable | Passenger Car
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The OBDSTAR TCM-021 is an adapter cable featuring a 16-pin round connector on the vehicle side for the transmission control module and a 15-pin DB15 connector on the device side. The 16-pin connector plugs directly into the TCM of a ZF 6HP automatic transmission in the 6HP19, 6HP21, 6HP26, 6HP28, and 6HP32 variants, which are typically mounted on or within the transmission housing.
The ZF 6HP series is widely used across many European and international vehicle manufacturers, and the dedicated TCM connector exists to access the control module when the standard diagnostic port is unavailable or not fully functional. With this cable, the connection does not run directly to the programmer: the TCM-021 is exclusively functional when paired with the OBDSTAR Converter V2, which translates the signals to the programming interface level of the connected device. Without that converter, the cable will not work.
This cable unlocks the ZF 6HP transmission control unit and nothing else. Whether you can read data, write data, or program a replacement unit depends on your own OBDSTAR device's software; the cable itself does not add any vehicle coverage.
KEY FEATURES
IMPORTANT NOTES
Applications and Features
The TCM-021 connects the transmission control unit of a ZF 6HP automatic gearbox to your OBDSTAR device via the Converter V2.
Control units you can reach
- ZF 6HP transmission control unit:the TCM of the 6HP19, 6HP21, 6HP26, 6HP28 and 6HP32 via the 16-pin round connector.
- Standalone bench unit:the same connection can be used when the TCM is serviced outside the vehicle.
What you can do
- Read TCM data:access the memory contents of the ZF 6HP TCM, allowing stored calibration and configuration data to be read out.
- Writing TCM data: write modified or replacement data back via the direct 16-pin connection, bypassing the vehicle's OBD network.
- Program a replacement unit: equip a new ZF 6HP transmission control module with the correct vehicle-specific transmission parameters.
- Work in bench mode: connect and service the unit independently of the vehicle.
- Important note: all the work described above requires both the Converter V2 and an OBDSTAR device with software that supports the relevant function.
Compatible vehicles and applications
The presence of a ZF 6HP automatic transmission is what matters, not the vehicle model. The vehicles listed below are equipped with a 6HP19, 6HP21, 6HP26, 6HP28, or 6HP32; only confirmed applications are included.
Alpina:
- B5 / B7: (2005–2012)
Aston Martin:
- DB9: (2004–2014)
- DBS: (2007–2012)
- Rapide: (2010–2014)
- Virage: (2011–2012)
Audi:
- A4 / S4 / RS4 (B6, B7, B8): 3.0 TDI, 3.2 FSI, 4.2 V8
- A6 / S6 / RS6 (C5 late, C6): 2.7 TDI, 3.0 TDI, 3.2 FSI, 4.2 V8, 5.2 V10
- A8 / S8 (D3): 3.0 TDI, 4.2 V8, 5.2 V10, 6.0 W12
- Q7 (4L): 3.0 TDI, 4.2 TDI, 4.2 FSI
Bentley:
- Arnage / Azure: 6.75 V8 Twin Turbo (2007–2009)
- Continental GT / GTC / Flying Spur: 6.0 W12 Twin Turbo (2003–2011)
BMW:
- 1 Series (E81, E82, E87, E88): 118d, 120d, 130i, 135i (early and pre-LCI models)
- 3 Series (E46 late, E90, E91, E92, E93): 320i, 325i, 330i, 335i, 320d, 325d, 330d, 335d
- 5 Series (E60, E61): 520i through 550i, 520d through 535d
- 6 Series (E63, E64): 630i, 645Ci, 650i, 635d
- 7 Series (E65, E66, F01, F02): 730d, 740i, 745i, 750i, 760i V12
- X3 (E83): (2003–2010)
- X5 (E53 late, E70): (2004–2013)
- X6 (E71): (2008–2014)
Ford:
- Expedition: (2007–2017)
- F-150: (2009–2017)
- Mustang: V6 and GT V8 (2011–2017)
Jaguar:
- S-Type: V6 and V8 (until approx. 2008)
- XF: (2008–2013)
- XJ (X350, X358, X351): V6, V8 (until approx. 2013)
- XK / XKR: V8 and Supercharged (until approx. 2013)
Land Rover:
- Discovery 3: 2.7 TDV6, 4.4 V8 (2004–2009)
- Discovery 4: 3.0 TDV6, 4.4 V8 (2009–2016)
- Range Rover Sport (L320): 2.7 TDV6, 3.6 TDV8, 4.2 Supercharged, 4.4 V8
- Range Rover Vogue (L322): 3.6 TDV8, 4.4 V8, 4.2 Supercharged
Lincoln:
- Navigator: (2007–2017)
Volkswagen:
- Phaeton: 3.0 TDI, 4.2 V8, 6.0 W12
Package contents
- 1x OBDSTAR (TCM-021) | ZF (6HP19/21/26/28/32) 16-pin TCM – 15-pin DB15 Adapter Cable | Passenger Vehicle
Technical specifications
| Specification | Description |
|---|---|
| Brand | OBDSTAR |
| Part number | TCM-021 |
| Type | Adapter cable |
| Application | Reading, writing and programming the TCM of ZF 6HP automatic transmissions |
| Vehicle-side connector | ZF (6HP19/21/26/28/32) 16-pin TCM |
| Device-side connector | 15-pin DB15 |
| Control units | Transmission control module (TCM) |
| Segment | Passenger vehicle |
| Supported brands | Alpina, Aston Martin, Audi, Bentley, BMW, Ford, Jaguar, Land Rover, Lincoln and Volkswagen |
| Model range | Models equipped with a ZF 6HP19, 6HP21, 6HP26, 6HP28 or 6HP32 automatic transmission |
| Required to use | OBDSTAR programmer with 15-pin DB15 interface, such as the DC706 with MP001 kit |
| Additionally required | OBDSTAR Converter V2 (sold separately, mandatory) |
| Weight | 0.1 kg |



