138 On-board computer event window Hydraulic system On-board computer and displays Red event window Note Important safety notes If you ignore warning and indicator lamps and the event window, you will not be able to rec- ognise failures and malfunctions in components or systems. Driving/braking characteristics may be affected and the operating and road safety of your vehicle may be limited. Have the affected system checked and repaired at a qualified specialist workshop. Always observe the warning lamps and event window and follow the corresponding measures. Red event window For a malfunction of high priority, the on-board computer shows a red event window.
The on- board computer shows a red event window, e.g. for low brake reservoir pressure. Stop the vehicle as soon as possible, while paying attention to the traffic conditions and contact a qualified specialist workshop. If further information about the malfunction is available, the event window displays the Ы symbol. You can display the information using the u button on the multifunction steering wheel. Observe the information and instructions in the event window. Display messages Possible causes/consequences and M Solutions Working hydraul‐ ics: oil level too low Supplementary text Û: Working hydraulics:
top up oil or switch off engine The working hydraulics oil level has fallen below the normal level. The operating safety of the working hydraulics is jeopardised. X Stop the vehicle as quickly as possible, paying attention to traf- fic conditions. X Switch off the engine. X Apply the parking brake. X Check the working hydraulics oil level and top up the oil (Y page 298). Power hydraulics: oil level too low Supplementary text Û: Power hydraulics: top up oil The power hydraulics oil level has fallen below the normal level. The operating safety of the power hydraulics is jeopardised. X Stop the vehicle as quickly as possible, paying attention to traf- fic conditions. X Switch off the engine.
X Apply the parking brake. X Check the power hydraulics oil level and top up the oil (Y page 299).