Drive readiness
Turning on drive readiness
1. Depress the brake pedal.
2. Press the Start/Stop button.
Turning off drive-ready state
Steptronic transmission:
1. Engage selector lever position P with
Automatic climate control
Temperature.
Maximum cooling.
AUTO program.
Air recirculation mode.
Air flow, manual.
Intensity AUTO program.
Air distribution, manual.
Defrost function.
Rear window defrost
Special tools required:
31 4 160
Necessary preliminary tasks:
Remove right output shaft.
Lever shaft seal (1) out of bearing block with a screwdriver (2).
Fig. 125: Identifying Shaft Seal And Screwdriver
Installing shaft seal:
NOTE: The installation protective ring (1) serves to protect the
Cooling System
The cooling system of the N54 engine consists of a radiator circuit and an
isolated oil cooling circuit. The fact
that there is an isolated oil-cooling circuit ensures that heat is not
introduced via the engine oil into the engine's
coolant system.
Fig. 71: Identifying Cooling S