Mercedes-Benz GL-Class 2009 Owners Manual - Manual (Page 142)

Automatic transmission
140
Effect
è With this selection you can use the
braking effect of the engine.
ç Allows the use of engine’s braking
power when driving
R on steep downgrades
R in mountainous regions
R under extreme operating
conditions
æ For maximum use of engine’s
braking effect on very steep or
lengthy downgrades.
One-touch gearshifting
With the automatic transmission in drive
position
D, you can limit or extend the gear
range using the steering wheel gearshift
contol.
Steering wheel gearshift control
1
Limiting gear range
Downshift (in manual program mode
M)
2 Extending gear range
Upshift (in manual program mode
M)
i You cannot shift with the steering wheel
gearshift control when the automatic
transmission is in park position
P, neutral
position N, or reverse gear R.
Limiting gear range
G Warning!
On slippery road surfaces, never downshift
in order to obtain braking action. This could
result in drive wheel slip and reduced
vehicle control. Your vehicle’s ABS will not
prevent this type of loss of control.
X Briefly pull left gearshift control 1 .
The automatic transmission will shift into
the next lower gear as permitted by the
shift program. This action simultaneously
limits the gear range of the automatic
transmission.
i To avoid overrevving the engine when
downshifting, the automatic transmission
will not shift into a lower gear if the engine’s
maximum speed would be exceeded.
Extending gear range
X Briefly pull right gearshift control 2 .
The automatic transmission will shift into
the next higher gear as permitted by the
shift program. This action simultaneously
extends the gear range of the automatic
transmission.
Controls in detail