On-board computer 125 Coolant menu window X Use the u or t button to scroll to the г monitoring info. X If Low or Too low is displayed in the menu window, refill the amount of engine oil dis- played ( Y page 297) as soon as possible and call up the engine oil level again. X To display the coolant temperature: use the r or s button to scroll to the Coolant menu window. i When the coolant level is too low, the coolant temperature cannot be displayed. X Be sure not to start the engine when the Too low menu window appears. X If the oil level display is not available, repeat the oil level check.
X If it is not possible to display the oil level after repeated attempts, have the oil level display checked at a qualified specialist workshop. Engine menu window In the Engine menu window, you can check the engine oil level and display the engine's operating hours. Check the engine oil level before the start of every journey. The engine oil level is not displayed while driving. Events menu window You can display stored malfunctions and mes- sages in the Events menu. If you have recti- fied the cause of the malfunction/message, the on-board computer no longer displays the event. On-board computer and displays X Park the vehicle on a level surface. X Apply the parking brake.
X Switch off the engine. X Turn the key to position 2 in the ignition lock. X Use the u or t button to scroll to the г monitoring info. X If the engine is at normal operating tem- perature : wait approximately five to seven minutes after switching off the engine. or X Use the r or s button to scroll to the Events menu window. The menu window shows, for example, the number of events or No events . X If the engine is cold: wait approximately five to ten minutes after switching off the engine. i If you call up the engine oil level too early or while the engine is running, Not avail‐ able appears in the menu window. X To display events: press 9 . X To display further events:
use the r or s button to show the next event win- dow. Diagnostics menu window X Using the u or t button, scroll to the г monitoring info. Diagnostics data contains information with which you can assist the maintenance per- sonnel during fault diagnosis, e.g. by remote diagnosis. The Diagnosis menu window con- tains, for example, a list of all control units (systems) installed in the vehicle. Further information can be obtained from a Mercedes-Benz Service Centre. X To display the engine oil level and oper- ating hours: using the r or s but- ton scroll to the Engine menu window. The menu window shows: R the engine oil level 4 , e.g.
Low Top up oil:4 l R the э operating hours of the engine, e.g. 10000 h 27 min . The service counter is not suitable for measuring the driving hours of the driver. Use suitable devices for this purpose. X Use the u or t button to scroll to the г monitoring info. X Use the r or s button to scroll to the Diagnosis menu window. Z