2009 Mercedes CL-Class Owner's Manual - Page 332

Controls in detail Driving and parking X Press the KEYLESS-GO start/stop button once. The engine starts automatically. If the engine does not start after several starting attempts: X Driving off 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. ! Do not run cold engine at high engine speeds. Running a cold engine at high engine speeds may shorten the service life of the engine. This is not covered by the Mercedes-Benz Limited Warranty. CL 63 AMG: At engine temperatures below 68‡ (20†), the engine's maximum speed is restricted in order to protect it from damage. Avoid driving your vehicle at full speed when the engine is cold to prevent premature engine wear and/or diminished comfort. Starting difficulties ! Remember that extended starting attempts can drain the battery. The engine does not start. You can hear the starter. There could be a malfunction in the engine electronics or in the fuel supply system. Carry out the following steps: X Contact an authorized Mercedes-Benz Center or call Roadside Assistance. The engine does not start. You cannot hear the starter. The battery may not be sufficiently charged. X Get a jump start (Y page 554). If the engine will not start despite a jump start: X If you are starting the engine with the SmartKey: Turn the SmartKey in the starter switch to position 0 and repeat the starting procedure. X If you are starting the engine with KEYLESSGO: Close any doors that may be open to allow for better detection of the SmartKey. or X Remove the KEYLESS-GO start/stop button from the starter switch. X Start the engine with the SmartKey as radio signals from another source may be interfering with the KEYLESS-GO function. X Repeat the starting procedure. Contact an authorized Mercedes-Benz Center or call Roadside Assistance. The starter has been exposed to excessive temperatures. X Let the starter cool for about 2 minutes. X Repeat the starting procedure. If the engine does not start after several starting attempts: X Contact an authorized Mercedes-Benz Center or call Roadside Assistance. 330