Powertrain
generic / SAE
P2711
Unexpected Mechanical Gear Disengagement
The transmission disengaged mechanically without a corresponding command. The vehicle can free-wheel, which is a safety concern. Often a hydraulic or hardware fault inside the gearbox.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number7 / 11
Possible causes
- Clutch piston seal failure releases gear high
- Sudden hydraulic pressure loss medium
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 800–5000 €
- Estimated time: 4–12 h
- Component: transmission internal
- Component: hydraulic control unit
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012