The DQ400e hybrid dual-clutch transmission integrates an electric drive motor and hybrid separation clutch with a six-speed dual-clutch gearbox. A no-drive or warning complaint may therefore involve the transmission, hybrid controls or high-voltage system.
More Than A Conventional DSG
Diagnosis can involve hydraulic pressure, the mechatronic, clutch values, electric motor sensors, temperature data, high-voltage isolation and communication between multiple control modules.
Safety And Correct Procedures
The transmission contains high-voltage components and stored hydraulic pressure. Appropriate isolation, depressurisation, scan-tool procedures and trained personnel are required before removal or mechatronic work.
Information That Helps Diagnosis
- Exact warning messages
- State of charge and whether the engine starts
- Whether EV and petrol drive modes are affected differently
- Fault codes from transmission and hybrid modules
- Recent battery, charging or transmission work
Read our DQ400e hybrid repair guide.
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