28 00... Checking/topping up oil level in twin-clutch gearbox (GS7D36SG)

Checking oil level

Call up Service functions (Drive) in BMW diagnosis system
Carry out oil level check in accordance with instructions

IMPORTANT: On the twin-clutch gearbox a run-in check fluid change is not required at 2000 km.
Use only the approved gear oil for dual clutch transmission GS7D36SG DCTF-1 Pentosin (P/N 83 22 2 147 477). .
Failure to comply with this instruction will result in serious damage to the twin-clutch gearbox.

IMPORTANT: The testing and filling procedure must be completed before the transmission oil temperature of 40°C is reached.
If a temperature in excess of 40°C is reached and no oil has emerged, insert the fluid adjusting screw and repeat the testing and filling procedure when it has cooled down.

Installation note:

Tighten down filler plug using

Hexagon wrench 8 A/F
Torque wrench
Socket 8 A/F

Fig 1: Identifying Filler Plug

Courtesy of BMW OF NORTH AMERICA, INC.

Topping up transmission oil after a repair

Stand vehicle on a level surface and secure against rolling off.

Open fluid adjusting screw (1). If oil emerges, close screw again immediately
If no oil emerges, top up until oil emerges and close oil adjusting screw (1) again

NOTE: If oil has been replenished here, a further refill must be carried out during the actual oil adjustment.

Fig 2: Identifying Fluid Adjusting Screw
Courtesy of BMW OF NORTH AMERICA, INC.
Connect diagnosis system and start service functions (drive).
Start engine (drive position N or P)
Record transmission temperature using Tester.
(Drive position P)
Permissible starting temperature ≤ 32°C
Idle speed: maintain at approx. 2000 RPM for 1 minute.
Open the oil adjusting screw (1)
Fill until oil emerges.
Max. transmission oil temperature 40 degrees Celsius
Insert screw.

Installation note:

Replace screw.