Volkswagen AG
Source-verified model
Volkswagen AG 0B5
The rear-driven model of 7-speed DSG7 with "wet" clutch - DL501 has been installed on Audi Q5-Q7, A4 Allroad, A5 Cabriolet, A6-A7 since 2008. This gearbox is also named as OB5. It operates with engines up to V8 4.0l (diesel) and transmits the torque up to 550 Nm at maximum speed.
Speeds
7
Type
DCT
Drive
FWD/AWD
Max torque
550
ATF capacity (L)
7,5
ATF change (L)
6,7
ATF type
G 052 529 A2
Other and alternative codes of this transmission
DL501-7Q
DL501
0B5
A5B.xx
verified naming
OEM designation
source name
Common problems & symptoms
Problems and symptoms reported for this transmission, compiled from repair sources. Not a complete list.
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Clutch Drum Metal Chips
Metal chips shed from clutch drum contaminate oil, damaging filter, gearbox components, and electrical systems.
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Mechatronics Unit Failure
Mechatronics unit is a known common failure point across all DL501 7-speed DSG gearboxes.
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Solenoid Rapid Wear
Metal chips circulating in oil cause accelerated wear and failure of solenoids within the valve body.
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Oil Filter Contamination
Chips from clutch drum clog the transmission filter, restricting oil flow and accelerating component wear.
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Clutch Drum Replacement
Main hardware repair requires full clutch drum assembly replacement rather than individual component repair.
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Metal Chips In Oil
Presence of metallic debris in DL501-specific G 052 529 A2 oil indicates internal drum or clutch pack degradation.
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Dual Clutch Friction Wear
Wet dual clutch friction plates in the automatic compartment degrade, contributing to chip generation and oil contaminat
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Electrical System Damage
Metal chips in transmission oil cause electrical faults by damaging wiring and electronic components within the gearbox.
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About this transmission
Transmission general data
The rear-driven model of 7-speed DSG7 with "wet" clutch - DL501 has been installed on Audi Q5-Q7, A4 Allroad, A5 Cabriolet, A6-A7 since 2008. This gearbox is also named as OB5. It operates with engines up to V8 4.0l (diesel) and transmits the torque up to 550 Nm at maximum speed.
Technical issues and repair guidelines
VAG DL501 (0B5) gearbox is structurally divided into two compartments - "mechanical" where the hypoid oil is used for mechanical gearboxes, and an "automatic" part with double clutch frictions and the valve body, where "intelligent" oil is used specially for DL501 - G 052 529 A2.
Typical problems
Chips from the drum harm both the filter and components of the gearbox, and the electrics. All gearboxes including 7-speed DL501 have issues with Mechatronics.The gearbox operation with metal chips in oil leads to rapid wear-out of solenoids. As far as the hardware of this gearbox is concerned, the main component to be replaced is the whole clutch drum.
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