2005 Mercedes E-Class Owner's Manual - Page 186

Controls in detail Automatic transmission Downshifting Warning! Upshifting Press button 2 on the right side of the steering wheel ( page 181). The transmission shifts to the next higher gear. If, instead of the manual program mode symbol M, the p symbol appears in the multifunction display ( page 174), shift to the next higher gear. The fuel supply will otherwise be interrupted to prevent the engine from overrevving. G ! In the manual program mode M, the transmission will not upshift, even if the engine has reached its overrevving range. Shift up to the next gear before the engine has reached its overrevving range. Make absolutely certain that the engine speed does not reach the red marking on the tachometer ( page 24). Otherwise the engine could be damaged which is not covered by the Mercedes-Benz Limited Warranty. Briefly press the gear selector lever to the right in the D+ direction ( page 176). or 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. Briefly press the gear selector lever to the left in the D- direction ( page 176). or Press button 1 on the left side of the steering wheel ( page 181). The transmission shifts to the next lower gear. i When you brake or stop, the transmission shifts down to a gear from which you can easily accelerate or take off. 184