DQ500 is a 7-speed wet dual-clutch, high-capacity transmission family. Correct identification matters because individual codes, applications, service requirements and repair parts can differ.
Clutch Symptoms Do Not Prove A Failed Clutch
Shudder, delayed engagement, flare, slip or poor take-off can involve clutch wear, but the same symptoms can be produced by mechatronic control, adaptation limits, contamination, engine torque irregularity, mounts, the dual-mass flywheel or internal transmission damage. The clutch is tested and the related systems are assessed before replacement is recommended.
Clutch Diagnosis Can Include
- Controlled take-off, reverse and load testing to reproduce the concern.
- Available clutch travel, slip, pressure, temperature and learned-value assessment.
- Mechatronic, actuator, engine, voltage and driveline checks where relevant.
- Flywheel, leakage, contamination and mechanical-condition inspection where accessible.
Transmission-Specific Test Focus
Service And Fitment Information
Service guidance: The correct service interval and procedure depend on the vehicle and code. Commercial, performance, towing and repeated low-speed use can also affect inspection priorities.
Fitment warning: The vehicle examples below are indicative only. Engine, drivetrain, build date, market and imported-vehicle specifications can change the fitted transmission. The VIN, gearbox code and vehicle-level information are checked before parts or major repair work are quoted.