2005 Mercedes G-Class Owner's Manual - Page 149

Controls in detail Automatic transmission One-touch gearshifting Warning! Even with an automatic transmission, you can change the gears manually when the gear selector lever is in position D. Downshifting Briefly press the gear selector lever to the left in the D- direction. The transmission will shift from the current gear to the next lower gear. This action simultaneously limits the gear range of the transmission ( page 150). G Upshifting Briefly press the gear selector lever to the right in the D+ direction. The transmission will shift from the current gear to the next higher gear as permitted by the shift program. This action simultaneously extends the gear range of the transmission. 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. i To avoid overrevving the engine when the gear selector lever is moved to the D- direction, the transmission will not shift to a lower gear if the engine's max. speed would be exceeded. 149