Getrag/Magna 6DCT250 Transmission / Driveline Family
6DCT250 family transmission type, ratio/speed class, drivetrain layout and diagnostic approach.
Technical identity
- Manufacturer group
- Getrag/Magna
- Transmission family
- 6DCT250
- Type
- dry dual clutch
- Speeds / ratio
- 6
- Drivetrain layout
- FWD
What to separate first in diagnosis
- Test electronic control, hydraulic pressure, clutch/converter and mechanical driveline behaviour separately.
- Temperature and fluid level/condition can directly affect pressure regulation and adaptation behaviour.
- Verify software, mechatronic and ratio variants within the same family by exact application/part identity.
Measurement sequence
- Confirm exact transmission code and software/application variant.
- Verify fluid level, condition and temperature.
- Capture input/output speeds and actual ratio.
- Test electronic command, hydraulic pressure and mechanical clutch separately.
- Verify shift/adaptation result under load.
Source-verified powertrain relationships
No curated engine-transmission relationship is present in the source graph for this family yet. Exact fitment is not inferred.
Mechanical-hydraulic-electronic architecture
- For DCT/DSG, TCU-mechatronics, K1/K2 clutches, actuator/line pressure and input/output speeds are evaluated together.
Driveline live-data package
- Freeze frame: first/last fault time, RPM, load, vehicle speed, system voltage, core temperatures and companion DTCs.
- Driveline: input/output speeds, commanded/actual ratio, clutch/TCC slip, fluid temperature, actuator/solenoid command and adaptations.
Driveline measurement chain
- 1) Match vehicle/generation/market/powertrain/driveline identity to the source record; family name alone is not fitment evidence.
- 2) Preserve freeze frame and companion DTCs before clearing; make the first-fault condition reproducible.
- 3) Verify power/ground and network communication under load; do not decide from key-on static measurement alone.
- 5) Compare electronic command → hydraulic/actuator response → mechanical slip/ratio result at the same temperature and load.
- 6) After repair, recreate the same load/temperature and verify DTC state, live-data deviation and user symptom together.
Fluid type/level temperature, pressure thresholds, adaptation limits and part codes are not asserted without application-specific OEM evidence.
Driveline root-cause split
- For DCT harshness/slip, separate TCU command from clutch slip and actuator/hydraulic response; adaptation result alone does not prove mechanical wear.
Sources & freshness
Exact technical values, prices and failure rates are not invented without verified vehicle/manufacturer evidence.
Getrag 6DCT250 / Renault DC4 / Ford DPS6 Technical Dossier
The 6DCT250 is a transverse six-speed dry dual-clutch transmission with electromechanical actuation. It appears as Renault DC4 and Ford DPS6 in service contexts and must not be confused with the wet MPS6/6DCT450.
Read the architecture correctly
Getrag engineering literature describes 6DCT250 as a dry dual-clutch, electromechanically actuated DCT for small transverse applications.
The dry clutch does not run in an oil bath, so low-speed creep, clutch heat, touch point and usage pattern can strongly influence symptoms.
Shift and clutch actuators require electrical/mechanical diagnosis; generic “low hydraulic pressure” logic does not apply to every 6DCT250 complaint.
Verify identity before parts or fluid
- Verify 6DCT250/DC4/DPS6 identity on the vehicle.
- Record clutch, TCM and actuator part numbers.
- Perform 12 V power and ground voltage-drop tests.
- Capture clutch learned values before changing them.
- Use the correct gearbox-fluid procedure; “dry clutch” does not mean the gearbox contains no lubricant.
Rule: A transmission family name is not a service part number. Do not select fluid, clutch, mechatronic or adaptation procedure until VIN, production date, unit code, TCU software and actual hardware are matched.
Verified application and scope notes
Schaeffler and S-TEC catalogues identify Renault DC4 as Getrag 6DCT250.
The 6DCT250 architecture appears in Ford service contexts as DPS6.
Workshop diagnostic sequence
- Measure charging system and TCM supply under load.
- Capture clutch A/B commands, actuator movement and input-shaft speeds.
- For launch judder separate DMF/flywheel, engine behaviour, clutch surfaces and learned state.
- For shift-selection faults validate actuator/fork movement against actual ratio.
- If symptoms worsen with heat, correlate the test route with temperature.
- After repair run the manufacturer-correct learn procedure and road test.
Misdiagnosis guards
- 6DCT250 and 6DCT450/MPS6 may share the PowerShift marketing name but use different dry/wet architecture and service logic.
- TCM replacement does not automatically solve clutch faults; collect mechanical and actuator evidence first.
- Before clutch replacement inspect for contamination or leakage sources.
Technical sources
- ATZ/Getrag — 6DCT250 dry clutch and electromechanical actuation · Engineering
- Schaeffler LuK GearBOX — 6DCT250/DC4/DPS6 · Technical catalogue
- S-TEC Getrag catalogue · Technical catalogue
Sources verify family architecture and example applications. Exact service procedure must still be matched to VIN/transmission identity and vehicle-manufacturer service information.