125Instruments, controlsIf there is a fault in the vehicle lightingsystem, the respective location of the faultis displayed as text, e.g.:Brakelightcheck rightIf brake light is defective, the relevant taillight takes over the brake light function.In vehicles with tyre pressure monitoringsystem 3, if tyre pressure is too low, thedisplay indicates which tyre to check, e.g.:Tyre pressurecheck rearright(value in bar)Check tyre pressure at next opportunityusing suitable gauge. Tyre pressuremonitoring system 3 – see page 204.Checking tyre pressure – see page 213.In vehicles with tyre pressure controlsystem 3, if there is major loss of pressurein a tyre, the display indicates the tyre atfault, e.g.:Attention!Rear left tyrepressure loss(value in bar)Stop immediately and check tyre and tyrepressure. For tyre pressure monitoringsystem 3 – see page 204.WashFluid LevelcheckFluid level in windscreen wash system toolow. Topping up wash fluid – see page 275.Rear window wash system and headlightwash system 3 are deactivated if washfluid level is low.Coolant levelcheckFluid level in engine cooling system is low.Check coolant level immediately – seepage 270.Interruption of power supplyStored warning messages appear on thedisplay one after the other.