On-board computer 127 night mode and the lights have been switched on. If the setting cannot be changed, the input window displays Day mode . See the "Service products" section ( Y page 360). X Use the u or t button to scroll to д settings. Engine fuel grade ! A higher fuel sulphur content accelerates the ageing process of the engine oil and can damage the engine and exhaust system. X Use the r or s button to scroll to the Lighting menu window. X Press the 9 button. The input window shows the instrument cluster lighting as a bar display. The sulphur content in the fuel is set before the vehicle is delivered.
Observe the notes on diesel fuel and fuel quality in the "Diesel fuel" section ( Y page 364). X Press the r or s button to select Instrument panel . X Change the setting with the u or t button. Engine oil grade ! If you mix engine oils with differing oil grades, the change interval for the engine oil is reduced in comparison to mixtures of engine oil of identical grade. Therefore, only mix engine oils of differing grade in exceptional circumstances. To prevent damage to the engine, set the sheet number of the engine oil with the lower grade under Engine oil grade .
On-board computer and displays Language menu window The languages available depend on the coun- try specifications of the vehicle. All text dis- plays are shown in the set language. You can install more languages. Further information can be obtained from a Mercedes-Benz Ser- vice Centre. X Use the u or t button to scroll to д settings. Observe the notes on engine oil in the "Engine oils" section ( Y page 361). Under Engine Oil grade , set the engine oil grade used according to the Sheet Numbers of the Mercedes-Benz Specifications for Ser- vice Products. X Use the r or s button to scroll to the X To set the language: press 9 . The input window displays a selection of languages.
Language menu window. i You can obtain information about service products which have been tested by Mercedes-Benz and approved for your vehi- cle on the Internet at: http:// bevo.mercedes-benz.com/ X Select the desired language with the r or s button. X Change the setting with the u button. Service products menu window Engine oil viscosity Under Engine Oil viscosity , set the vis- cosity class (SAE classification) of the engine oil used. General notes ! If you change the data of the service prod- ucts, the maintenance system automati- cally adjusts the maintenance due dates accordingly. Set the data of the filled service products. Otherwise, you could damage the vehicle assemblies.
Transmission oil grade Under Transmission Oil grade , set the transmission oil grade used according to the Sheet Numbers of the Mercedes-Benz Spec- ifications for Service Products. Z