2007 Mercedes CL-Class Owner's Manual - Page 520

Operation Engine compartment Be careful not to spill any oil when adding. Avoid environmental damage caused by oil entering the ground or water. Transmission fluid level The transmission fluid level does not need to be checked. If you notice transmission fluid loss or gear shifting malfunctions, have an authorized Mercedes-Benz Center check the automatic transmission. Active Body Control (ABC) fluid level Regular fluid level check is not required. If you notice fluid leaks or malfunction messages in the multifunction display, have an authorized Mercedes-Benz Center check the ABC-system. ! Excess oil must be siphoned or drained off. It will cause damage to the engine and emission control system not covered by the Mercedes-Benz Limited Warranty. Screw filler cap 1 back on filler neck. Example illustration from CL 550 1 Filler cap Unscrew filler cap 1 from filler neck. Add engine oil as required. Be careful not to overfill with oil. For more information on engine, see the "Technical data" section ( page 684) and ( page 686). 517