110 Instrument cluster Useful information Rev counter These Operating Instructions describe all the models and standard and optional equipment of your vehicle that were available at the time of going to print. Country-specific differences are possible. Bear in mind that your vehicle may not be equipped with all the functions described. This also applies to safety-relevant systems and functions. Read the information on qualified specialist workshops ( Y page 30). ! If you exceed the maximum permissible engine speed, the warning buzzer sounds. You should not drive and change gear by the sound of the engine, but according to the engine speed shown in the rev counter.
Avoid driving in the red overrevving range. This could lead to engine damage. Instrument cluster On-board computer and displays Important safety notes G WARNING Operating the integrated information systems and communications equipment in the vehicle while driving will distract you from traffic con- ditions. You could then lose control of the vehicle. There is a risk of an accident. Only operate these devices if road traffic con- ditions permit. If you are unsure about the surrounding conditions, pull over to a safe location and make entries only while the vehi- cle is stationary. Example: instrument cluster :
Economical operating range (green) ; Engine brake operating range (yellow) = Overrevving range, danger of engine dam- age (red) If the W indicator lamp in the instrument cluster lights up, the engine speed is too high, e.g. if you select a low gear when shifting down: G WARNING If the instrument cluster has failed or mal- functioned, you may not recognise function restrictions relevant to safety. The operating safety of your vehicle may be impaired. There is a risk of an accident. Drive on carefully. Have the vehicle checked at a qualified specialist workshop immedi- ately. X Decelerate using the service brake. or X Shift up a gear. The W indicator lamp in the instrument cluster goes out.
Observe further information in the event win- dow of the on-board computer. General notes on the rev counter: R Observe the rev counter while driving and stay within economical speed range : . In some situations, it may make sense to operate the engine outside economical You should therefore make sure your vehicle is operating safely at all times. Otherwise, a vehicle that is not operating safely may cause an accident. If your vehicle is not operating safely, stop and park safely as soon as pos- sible.